Sunday , 19 February 2017

# Latest Important Questions for 2015

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## Physics Short Questions Guess Paper 9th Class 2014

• Can we use a hydrometer to measure the density of milk
• Define and explain the term Strain
• Define atomic physics and nuclear physics
• Define axis of rotation of a body
• Define centre of gravity
• Define centre of mass
• Define centripetal acceleration
• Define chemical energy
• Define coefficient of linear expansion
• Define coefficient of thermal conductivity
• Define conductors. Give example
• Define Convection
• Define Density
• Define density. What is its SI UNIT?
• Define derived quantities and write the name of two derived quantities
• Define electric energy with two examples
• Define equilibrium. Explain with examples
• Define evaporation
• Define Fahrenheit scale and Kelvin scale
• Define force in term of momentum
• Define gravitational field
• Define heat capacity
• Define Hooks’ law and write its equation
• Define Joule
• Define Kinetic energy and write equation
• Define Latent heat of fusion
• Define latent heat of vaporization
• Define least count
• Define lower and upper fixed points
• Define mass of earth
• Define mechanical energy and give two examples
• Define motion with an example
• Define Neutral Equilibrium
• Define plasma
• Define potential energy and write it formula
• Define resolution of forces and its rectangular components
• Define rest and motion
• Define Resultant vector
• Define Rigid Body
• Define scalars and vectors. How vectors can be represented graphically?
• Define second condition of equilibrium
• Define Solar Cells
• Define specific heat. In which units it is measured
• Define static friction
• Define strain and write its equation
• Define Stress
• Define tensile strain. Why it has no, unit
• Define the term heat
• Define the terms heat and temperature
• Define thermal expansion
• Define thermometer
• Define torque and write its unit
• Define translator motion
• Define two types of motion
• Define uniform speeds
• Define vector and write the name of two vector quantities
• Define vibratory motion with two examples
• Define work and write its equation
• Derive mathematical relation for 2″ law of motion
• Describe Fahrenheit scale
• Describe relation of radiation of heat and surface area
• Describe two ways to reduce friction
• Determine volume of an irregular shaped object using a measuring cylinder
• Differentiate between electronic balance and physical balance
• Differentiate between mass and weight
• Differentiate between mechanical stop watch and digital stop watch
• Differentiate between non-renewable and renewable sources of energy
• Differentiate between positive and negative acceleration
• Differentiate between rest and motion
• Differentiate between speed and velocity
• Differentiate between transitory
• Does spirit and water evaporate at the same rate?
• Explain briefly measuring tape
• Explain mass energy equation
• Explain the behavior of solids on the basis of kinetic molecular model of matter
• Explain the impact of green house effect in global warming
• Explain the impact of greenhouse effect in global warming
• Find the magnitude of x-components F, of the force ‘F’ acting parallel to y-axis
• Give an example of a moving body which is in equilibrium
• Give some examples of convection
• Give the relationship for volume expansion of liquid
• How can .Ave find the magnitude of a vector from rectangular components?
• How can we find mass of moon?
• How can you find the efficiency of a system?
• How can you relate a force with the change of momentum of a body?
• How can you say that gravitational force is a field force?
• How head-to-tail rule helps to find the resultant of forces
• How is a vector represented?
• How is precision related to the significant figures in a measured quantity?
• How many mass measuring balance is use?
• How many ways of transfer of heart
• How temperature determines the direction of flow of heat
• How the mass of Earth can be determined
• How value of “g” can be finding
• How various surfaces can be compared by a Leslie Cube?
• How will you find out that mass of a body remain uniform very here
• Identify and explain limitations of measuring instruments such as meter rule
• In What pan we place the object of a Physical balance
• Name five prefixes most commonly used
• Name the five devices that convert electrical energy into mechanical energy
• Normal human body temperature is 98.6°F. Convert it into Celsius scale and Kelvin scale
• Now Newton’s law of gravitation helps it understanding the motion of satellite
• On what factors does work depend upon?
• On what factors pressure of a liquid depends
• On what factors rate of emission and absorption of heat from a body depends
• On what factors the orbital speed of a satellite depends
• Sate the principle of floatation
• State Archimedes principal
• State law of inertia
• State second law of motion
• State the law of conservation of momentum. Explain with examples
• Upon what factors the orbital speed of a satellite depend
• Wet clothes dry up quickly when spread. Why
• What are artificial satellites?
• What are factors on which linear thermal expansion depends?
• What are free electrons?
• What are insulators? Give examples
• What are prefixes? Give some examples measurements in which prefixes are used to express them
• What are the applications of Pascal’s law?
• What are the parameters of equations of motion?
• What are thermals? How gliders use thermals to stay in air
• What are various forms of energy?
• What causes a glider to remain in air?
• What did you mean by line of Action of a force and moment Arm?
• What do you know about global positioning system?
• What do you know about momentum?
• What do you know about variable velocity?
• What do you mean by ‘resolution of vectors?
• What do you mean by distance and displacement?
• What do you mean by inter conversion of energy
• What do you mean by linear expansion?
• What do you mean by neutral equilibrium?
• What do you mean by resultant forces?
• What do you mean by the pitch of Screw Guage
• What do you mean thermal conductivity or rate flow of heat?
• What does it happen the atmospheric pressure at a place falls suddenly
• What is a “Barometer?”
• What is a field force?
• What is a greenhouse?
• What is a measuring cylinder?
• What is a plumb line? What is the use of it
• What is a satellite?
• What is absolute zero
• What is an acid meter?
• What is atmospheric pressure? Explain. Why it decreases as we go up
• What is Bio Mass?
• What is centripetal force?
• What is chemical energy? How do we use chemical energy in different forms?
• What is coefficient of friction?
• What is difference between axis of rotation and point of rotation?
• What is gravitational acceleration?
• What is head to tail rule
• What is heat capacity?
• What is Hook’s law? What is meant by elastic limit?
• What is least count of vernier calipers? How can it be calculated?
• What is meant by absolute zero?
• What is meant by anomalous expanse ion of water?
• What is meant by centrifuge?
• What is meant by convection currents
• What is meant by elastic limit?
• What is meant by infrared and ultraviolet?
• What is meant by land breeze?
• What is meant by least count of any instrument?
• What is meant by lower and upper fixed points in a thermometer?
• What is meant by multiples and sub-multiples?
• What is meant by non-renewable sources of light?
• What is meant by power? Write down unit
• What is meant by scientific notation? Give examples
• What is meant by significant figures of a measurement?
• What is meant by thermometric substance?
• What is power?
• What is rigid body?
• What is soil erosion?
• What is stop watch and how it is useful in measuring short interval of time
• What is the difference between Action and Reaction?
• What is the difference between sliding friction and rolling friction?
• What is the direction of motion of the body moving in a circle?
• What is the effect of length of the solid on thermal conductivity?
• What is the effect of mass of a freely falling body on the gravitational acceleration?
• What is the effect of temperature on evaporation?
• What is the importance of law of conservation of momentum?
• What is the law of Inertia?
• What is the principle of flight of rockets and jet engines?
• What is the used of meter rod
• What is thermal conductivity?
• What is unit of power? Also define that unit of power
• What is up thrust? Give an example
• What is using of clinical thermometer write its range?
• What is velocity of Ceo-Stationery relative to earth?
• What k meant by rest and motion
• What make a sucker pressed on a smooth wall sticks to it
• What role SI units have played h the development of Science
• What will be the temperature on Kelvin scale of temperature when it is 20°C on Celsius Scale?
• What will be the tension in a rope that is pulled from its ends by two opposite forces 100 N EACH?
• When distance time graph is a straight line, what information does it provide?
• When does a force work? Explain
• Where is the centre of gravity of uniform square and uniform triangular sheets?
• Why are sauce-pans made of metals?
• Why do we need to measure extremely small intervals of time?
• Why does a piece of stone sink in water but a ship with a huge weight floats?
• Why does atmospheric pressure vary with height?
• Why fossil fuels are called non – reins able form of energy
• Why gaps are left in railway tracks
• Why is the use of Correction necessary in a measuring instrument?
• Why is the use of zero error necessary in a measuring Instrument?
• Why is the value of ‘g’ different at different places?
• Why law of gravitation is important for us
• Why moon is called Natural Satellite
• Why rolling friction is less than sliding friction
• Why the base of a vehicle is made wide
• Why the height of vehicles is kept as low as possible
• Why the recoil of the gun is smaller than the velocity of the bullet
• Why vector quantities cannot be added and subtracted like scalar quantities
• With what force an apple weighing in attracts the earth
• Write a note on a lever balance
• Write a note on Hydraulic brake
• Write a principle of moments
• Write down advantages of Friction
• Write down some main forms of energy
• Write down the difference between negative and positive acceleration
• Write down the importance of evaporation
• Write equation for heat thermal conductivity
• Write four examples of vectors
• Write methods of reducing force of friction
• Write note on Banking of roads
• Write the names of any four forms of energy
• Write the names of four derived units
• Write the scales of a temperature
• Write two methods to reduce friction

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1. Nice for our education:-)O:-):-):-):-):-)

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