Guess Paper Physics Short Questions 2nd Year 2015

 

Guess Paper Physics Short Questions 2nd Year 2015

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Important Physics Inter Part II Short Questions

  • A beam of red light and a beam of blue light have exactly the same energy. Which beam contains the greater number of photons?
  • A charge particle is placed in an electric field. What is the force on the particle if the charge on the particle is doubled?
  • A circuit contains an iron-cored inductor a switch and D C source arranged in series. The switch is closed and after an interval reopened. Explain why a spark Jumps
  • A metal rod of length 25 cm is moving at a speed of 0_5 MC’ in a direction perpendicular to a 0 25 T magnetic field. Find the emf produced in the rod
  • A particle which produces more ionization is less penetrating, why?
  • A square loop of wire is moving through a uniform magnetic field. The normal to loop is oriented parallel to magnetic field. Is emf induced in loop? Give a reason for
  • A tungsten target is struck by electrons that have been accelerated from rest through 40 kV potential differences. Find the shortest wavelength of the bremsstrahlung
  • According experimental results of Lummer and Pringshein’s what is relation in energy and temperature?
  • Advantage of torque in a current carrying coil?
  • An A.0 Voltmeter reads 250 V. What is its peak and instantaneous values if the frequency of alternating voltage is 50 Hz?
  • Applying the second postulate of Bohr’s Model of Hydrogen Atom, derive the relation for Quantized Radii of hydrogen atom.
  • As a solid is heated and begins to glow, why does it first appear red?
  • At what frequency will an inductor of 1.0 H have a reactance of 5000?
  • Atomic number or the charge number of an atom?
  • Bohr’s theory of hydrogen atom is based upon several assumptions. Do any these assumptions contradict classical physics?
  • Calculate the longest wavelength of radiation for the Paschen series.
  • Can a D.C. motor be turned into a D.C. generator? What changes arc required to be done?
  • Can a step up transformer increase the power level?
  • Can electron in the ground state of hydrogen absorb a photon of energy 13.6 ev and greater than 13.6 ev?
  • Can pair production take place in vacuum? Explain.
  • Compute the shortest wavelength radiation in the Balmer series.
  • Coulomb’s law for electrostatic charges
  • Define absolute potential and potential gradient.
  • Define amorphous solids?
  • Define binding energy and give its formula.
  • Define Curie’s temperature.
  • Define decay constant and write its unit.
  • Define diamagnetic, paramagnetic and Ferro magnetic substances.
  • Define dielectric?
  • Define doping?
  • Define Electric Flux and give its unit.
  • Define electric power. Obtain the maximum power equation.
  • Define electrolysis?
  • Define electron volt.
  • Define electroplating?
  • Define henry.
  • Define impedance and resonance frequency.
  • Define magnetic flux and magnetic flux density.
  • Define modulus of elasticity. Show that units of modulus of elasticity and stress are same,
  • Define positron?
  • Define quarks?
  • Define R-C series circuit
  • Define RI Jseries circuit
  • Define stress and strain. What are their SI units?
  • Define time constant and give its formula.
  • Define torsional couple.
  • Describe a circuit which will give a continuously varying potential.
  • Describe briefly the function of Photodiode by circuit diagram.
  • Describe Faraday’s law of electromagnetic induction.
  • Describe right hand rule to find the direction of lines of magnetic field.
  • Describe the change in magnetic field inside solenoid carrying a steady current I, if length of solenoid is doubled but number of turns remains the same.
  • Describe the digital system
  • Determine charge to mass ratio (e/m) of an electron
  • Decreasing the length and the temperature of the wire
  • Do bends in a wire affect its electrical resistance? Explain.
  • Do electrons tend to go region of high potential or of low potential?
  • Does induced emf always act to decrease the magnetic flux through a circuit?
  • Does the brightness of a beam of light primarily depend on the frequency of photons or on the number of photons?
  • Does the induced current depend on the resistance of the circuit?
  • Does the induced-current depend on the resistance of the circuit?
  • Does the voltage output of a generator change if its speed of rotation is increased? Explain briefly.
  • Draw figure showing electrical conduction by holes in semi-conductor.
  • Explain briefly the conductors on the basis of energy band theory.
  • Explain briefly the term “potential gradient”.
  • Explain frame of reference?
  • Explain hysteresis loss?
  • Explain inductive reactance?
  • Explain modulation?
  • Explain pair production and annihilation of matter
  • Explain Parallel Resonance circuit
  • Explain photovoltaic cell?
  • Explain stopping potential?
  • Explain the conditions under which electromagnetic waves are produced from a source?
  • Explain the existence of magnetic domains in Ferromagnetic material.
  • Explain the process of electrolysis and electroplating?
  • Explain the term potential gradient.
  • Explain working of a heater that works on the principle of electromagnetic induction.
  • Explain Xerography?
  • Find the magnitude of the force acting on the wire.
  • Find the mass m of a moving object with speed 0.8 c.
  • Find the speed of the electron in the first Bohr Orbit.
  • For unmarked wires emerge from a transformer. What steps would you take to determine the turns ratio?
  • From the theory of relativity, how the momentum p of the photon is related to energy?
  • Give two advantages of laser over ordinary light.
  • Give two postulates of special theory of relativity
  • Give two uses of CRO.
  • How can a current loop be used to determine the presence of a magnetic field in a given region of space?
  • How can radioactivity help in the treatment of Cancer?
  • How can the spectrum of hydrogen contain so many lines when hydrogen contains one electron?
  • How can we improve the efficiency of a transformer?
  • How can you identify that which plate of capacitor is positively charged?
  • How can you use magnetic force to separate isotopes of chemical elements?
  • How does doubling the frequency affect the reactance of (a) inductor (b) capacitor?
  • How does doubling the frequency affect the reactance of: (a) An inductor (b) a capacitor?
  • How does motion of an electron in n-type substance differ from motion of hole in p-type substance?
  • How does resistance of conductor rise with temperature?
  • How heat is dissipated across any load or resistor?
  • How impedance is measured?
  • How is a rheostat used as potential divider?
  • How is depletion region formed in PN-junction diode? What is the effect on the width of depletion region when: a. Diode is forward biased, b. Diode is reverse biased
  • How is then the power transferred?
  • How many are the number of electrons in one coulomb charge?
  • How many times per second will an incandescent lamp reach maximum brilliance when connected to a 50 Hz source?
  • How the characteristic X-rays appear on a continuous spectrum?
  • How the magnetic field in the D.C. motor is provided?
  • How the magnetic field of the solenoid is found?
  • How the reception of a particular radio station is selected on your radio set?
  • How the strain energy can be obtained?
  • How the uncertainty principle between energy and time is related?
  • If a point charge q of mass m is released in a non-uniform electric field with Field lines pointing in the same direction, will it make a rectilinear motion?
  • If an electron and a proton have the same de Broglie wavelength, which particle has greater speed?
  • If r is a unit vector directed from the point charge q to the test point where
  • If the speed of Light were infinite, what would the equations of special theory of Relativity reduce to?
  • In a transformer, there is no transfer of charge from the primary to the secondary. How is, then the power transferred?
  • Is electron volt unit of potential difference or energy? Explain.
  • Is energy conserved when an atom emits a photon of light?
  • Is it possible to create a single electron from energy? Explain.
  • Is it possible to orient a current loop in a uniform magnetic field such that the loop will not tend to rotate? Explain.
  • Is the filament resistance lower or higher in a 500 W, 220 V light bulbs than in 1.00 W. 220 V bulbs?
  • Name device that will: (a) permit flow of direct current and opposes flow of alternating current. (b) Permit flow of alternating current but not the direct current.
  • Name the main components or parts of an A.C. generator.
  • Photon A has twice the energy of Photon B. What is the ratio of momentum of A to that of B?
  • How many times per second will an incandescent lamp reach maximum brilliance when connected to 50 Hz source?
  • State and briefly explain Kirchoff’s first rule (current law).
  • State any two postulates of Bohr atomic theory.
  • State Krichhoff’s loop rule.
  • Suppose that you follow an electric field line due to a positive point charge. Do the Electric field and the Potential increase or decrease?
  • The potential is constant through a given region of space. Is the electric field zero or non zero in the region? Explain.
  • There exists a magnetic held of 0.30 T in space along +X-axis. What will be the magnetic force on a proton of q = 1.6 x 10-19C , when it is moving with velocity 3
  • Two equal charges are placed at some distance ’d’ apart. Find electric potential at the midpoint on a line joining these charges when: a. both has the similar charge,
  • Two equal resistors are first connected in series and then in parallel to the same voltage source.
  • What advantages of an electron microscope has over an optical microscope?
  • What are biasing requirements of a transistor for normal operation? Draw a common emitter amplifier circuit fulfilling these requirements.
  • What are black body radiations?
  • What are diamagnetic substances?
  • What are super conductors?
  • What are the properties of electric field lines?
  • What are the three advantages of lasers over ordinary light?
  • What do we mean by the term critical mass?
  • What do we mean when we say that the atom is excited?
  • What do you mean by Lorentz force?
  • What do you mean by the term Critical Mass?
  • What do you understand by background radiation?
  • What factors make a fusion reaction difficult to achieve?
  • What happens to total radiation from a blackbody if the absolute temperature is doubled?
  • What is a Parallel Resonance circuit? Write down its properties.
  • What is a phantom bar magnet?
  • What is annihilation of matter?
  • What is back emf in motor?
  • What is current gain of transistor?
  • What is current sensitivity of a suspended moving coil galvanometer? How does it depend upon different factors? Describe by mathematical formula.
  • What is D.C. Motor? Describe its construction and working
  • What is dead beat galvanometer?
  • What is electromotive force and give its units?
  • What is excitation potential?
  • What is Fast Nuclear Reactor?
  • What is function of sweep generator in cathode ray oscilloscope?
  • What is Gaussian surface?
  • What is half-wave rectification?
  • What is hysteresis loop? Describe its main features.
  • What is inductor? Determine energy stored in an inductor
  • What is magnetic induction? Define its unit.
  • What is Mass Defect and Binding Energy of a nucleus? Write down their mathematical expressions.
  • What is meant by a line spectrum? Explain, how line spectrum can be used for the identification of elements?
  • What is meant by A.M. and F.M.?
  • What is meant by an electromotive force, give its unit?
  • What is meant by Hysteresis loss? How is it used in the construction of a transformer?
  • What is meant by line spectrum? How it can be used for the identification of elements?
  • What is meant by paramagnetic substances? Give examples.
  • What is meant by strain energy?
  • What is meant by the term meter movement?
  • What is mutual induction?
  • What is one electron volt energy? Derive its formula.
  • What is polymeric solid?
  • What is proper length?
  • What is resonance condition in RLC series circuit?
  • What is right-hand rule?
  • What is shunt resistance? Explain briefly.
  • What is squid and where is it used?
  • What is stable or dead beat Galvanometer?
  • What is the behavior of semi-conductor diode at zero Kelvin?
  • What is the chemical formula of Yttrium barium copper oxide?
  • What is the current gain of the transistor?
  • What is the effect of forward and reverse biasing of a diode on the width of depletion region?
  • What is the electric potential at a certain point?
  • What is the force experienced by a current carrying rod placed in an external magnetic field if the rod is placed parallel to the field?
  • What is the heat H produced by a current I in the wire of resistance R during a time interval?
  • What is the induced emf produced during the phenomena of mutual induction?
  • What is the Lorentz force?
  • What is the maximum power output theorem? Derive its formula.
  • What is the net current flowing through the coil of a motor in the presence of back emf?
  • What is the Principle of measuring the Unknown resistance by the wheat stone bridge?
  • What is the principle of virtual ground? Apply it to find the gain of an inverting amplifier.
  • What is the relativistic time measured in a frame of reference moving with velocity?
  • What is the speed of a-particles at which they hit the gold foil?
  • What is the stress if the force F is applied on unit area A?
  • What is the value of Stephen’s constant?
  • What is the voltage measuring part of the AVO meter?
  • What is the working principle of a LED?
  • What is torsion constant?
  • What is wheat stone bridge? How can it be used to determine an unknown resistance?
  • What should be the orientation of a current carrying coil in a magnetic field so that torque acting upon the coil is: a. Maximum, b. Minimum?
  • When an electric motor, such as an electric drill, is being used, does it also act as a generator? If so what is the consequence of this?
  • When does light behave as a wave? When does it behave as a particle?
  • When the capacitance of the capacitor is one farad?
  • When ultraviolet light falls on certain dyes, visible light is emitted. Why does this not happen when infrared light falls on these dyes?
  • Whether time is an absolute quantity according to special theory of relativity?
  • Which charges actually flow in case of conventional current?
  • Which law is applied to calculate the electric intensity due to different charge configuration?
  • Which photon blue or red has greater energy and greater momentum?
  • Who suggested that energy is radiated or absorbed in discrete packets?
  • Why are heavy nuclei unstable?
  • Why charge carriers are not present in depletion region?
  • Why charge carriers are not present in the depletion region?
  • Why does the resistance of a conductor rise with temperature?
  • Why is B nonzero outside a solenoid?
  • Why is the base current in a transistor very small?
  • Why is the core of transformer laminated?
  • Why the radio waves are detected as continuous radiation?
  • Why the resistance of an ammeter should be very low?
  • Why voltmeter should have a very high resistance?
  • Will higher frequency light eject greater number of electrons than low frequency light? Explain briefly.
  • Write a note on Phase lag and phase lead.
  • Write a note on Phase of A.C.
  • Write a note on Vector representation of an alternating quantity.
  • Write a note on Wilson Cloud Chamber?
  • Write a short note on basic forces of nature
  • Write any four uses of laser.
  • Write down the characteristics of operational amplifier.
  • Write some important properties of a series resonance circuit.
  • Write the equation of efficiency of an ideal transformer.
  • Write the principle of electric generator.
  • Write the two statements of uncertainty principle.
  • Write the types of spectra?
  • Write the uses of super conductors.
  • Write two applications of photo diode.
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2 comments

  1. Please post guess paper for practicals also

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