Thursday , 2 October 2014

Physics Long Questions Guess Paper 9th Class 2014

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Physics Long Questions Guess Paper 9th Class 2014

  • A 50kg man moved 25 steps up in 20 seconds. Find his power each step is 16cm high
  • A car starts from rest. Its velocity becomes 20 ms-1 in 8 s. Find its acceleration
  • A car weighing 12 KM has speed of 20ms. Find its kinetic energy
  • A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to reasonable number of significant figures.
  • A communication satellite is launched at 42000 km above Earth. Find it orbital speed.
  • A container has 2.5 liters of water at 20°C. How much heat is required to boil the water?
  • A man is pulling a trolley on a horizontal road with a force of 200 Newton making 30° with the road. Find horizontal and vertical components of its force
  • A man pulls a block with a force of 300 N through 50 m in 60 s. Find the power used him to pull the block.
  • A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5mm. What is its least count?
  • A wooden cube of sides 10cm each has been dipped completely in water. Calculate the up thrust of water acting on it
  • As soon as the hot solid is put in the cold water, it reaches the maximum temperature quickly. Give a reason for this.
  • At what attitude the value of g would become one fourth than to the surface of the earth?
  • Calculate the power of pump which can lift 200 kg of water through a height of 6m in 10 seconds.
  • Convert 50°C on Celsius scale into Fahrenheit temperature scale
  • Define and explain latent heat of fusion
  • Define and explain Newton’s second law of motion.
  • Define centripetal force
  • Define momentum. Mathematically prove the relation between force and momentum
  • Define rate of flow of heat Derive the relation for thermal conductivity of a solid
  • Define rotator motion. Give examples
  • Define specific, heat. How would you find the specific, heat of a solid?
  • Define the specific heat capacity
  • Define translator motion. Also state its three types
  • Derive the first equation of motion for uniformly accelerated rectilinear motion
  • Describe an experiment to find the centre of gravity of an irregular shaped thin lamina
  • Describe how a vector quantity is represented? Explain with examples
  • Describe some practical applications force in our daily life
  • Describe the importance of in daily life
  • Describe the processes involved to produce energy from fossil fuels
  • Determine the mass of using Newton’s law of gravitation
  • Determine the orbital speed of artificial satellites
  • Explain briefly the motion of freely falling bodies?
  • Explain green house effect
  • Explain the changes in weather due to the variation in atmosphere pressure
  • Explain the working of Hydraulic press
  • Find the acceleration from speed-time graph shown in figure
  • Find the density of the above object by using spring balance and compare the result with that you have already found by physical balance
  • Find the latent heat of fusion of ice with the help, of simple experiment
  • Find the magnitude and direction of a force whose x- component is 12N and y-component is 5N
  • Find the perpendicular components of a force of 50N making an angle of 30° with x-axis
  • How can a hot air balloon carrying a lot of load rise in the air?
  • How can the mass of Earth be determined?
  • How can you find the high temperature of a metal piece of known mass and known specific heat by the method of mixture?
  • How can you find the value c unknown weight by using the above apparatus and the graph you have drawn?
  • How convention current in air forms land and sea breezes and also help in gliding of gliders and birds?
  • How different sources of energy are harmful to environment also explain to prevent these hazards?
  • How many are the types of motion Explain
  • How many scales of temperature are Unique there in use?
  • How many types of thermal volume expansion are? Explain
  • How much heat is required to increase the temperature of 0.5 kg off water from 10°C to 65°C?
  • How much ice will melt by 50000 J of heat? Latent heat of fusion office=336000 Jkg-1 (150g)
  • How various surfaces can be comparing by a Leslie cube? Explain it.
  • How would you find the specific heat of solid?
  • If the same amount of heat is transferred to an equal mass of water and lead metal which substance will be hotter?
  • Normal human body temperature I 98.6`F. Convert into Celsius and Kelvin scale
  • On what factors emission and absorption of radiation depends
  • On which principle Hydraulic press works? Explain the working of Hydraulic press.
  • State and demonstrate Pascal’s law
  • State and explain Archimedes Principle
  • State and explain law of conservation of momentum
  • State and explain Resolution of Forces in its rectangular components
  • State and explain the secure condition for equilibrium
  • State Archimedes Principle. Derive its mathematical relation
  • The density of air is 1.3Kgm-3.Find the mass of air in a room measuring 8m x 5m x 4m.
  • What are the consequences and applications of radiation?
  • What are the factors on which rate of flow of heat depends?
  • What do you know about young’s modules? How would you determine young’s modules of an object?
  • What effect is expected if in instead of single cup, double cups (one into the other) are used and if the cup is covered by a lid of Styrofoam as well?
  • What is a greenhouse? How does the temperature in a greenhouse can be maintained? How Green house effect is produced in nature
  • What is a screw gauge? Give its construction and working.
  • What is a stop watch? Write its types and give least count of each of them? Describe the method of use of stop watch
  • What is centrifugal force? Explain
  • What is kinetic molecular model of matter?
  • What is meant by scientific notation? Explain with examples
  • What is mercury barometer? Describe its construction and working
  • What is plasma? How it from is formed? Give some examples?
  • What is the difference between scalar and vector quantities?
  • What is the importance of large specific heat capacity of water?
  • What is thermal conductivity? On what factors rate of flow of heat depends upon? Explain.
  • Why is polystyrene cup used in this experiment instead of a metallic calorimeter?
  • Write a note on meter rule
  • Write kinetic molecular model for solids, liquids and gases
Physics Long Questions Guess Paper 9th Class 2014 A 50kg man moved 25 steps up in 20 seconds. Find his power each step is 16cm high A car starts from rest. Its velocity becomes 20 ms-1 in 8 s. Find its acceleration A car weighing 12 KM has speed of 20ms. Find its kinetic energy A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to reasonable number of significant figures. A communication satellite is launched at 42000 km above Earth. Find it orbital speed. A container has 2.5 liters of water at 20°C. How…

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