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ICSE Class 9 Physics — practice by topic

Browse 148 questions across 15 Physics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Physics topics

Current Electricity (45)Laws of Motion (32)Physics and Measurement (32)Newton's Laws of Motion (27)Physics (27)Work and Energy (27)Work and Power (27)Sound (26)Pressure in Fluids and Atmospheric Pressure (21)Motion in One Dimension (19)Heat and Energy (1)Measurements and Experimentation (1)Propagation of Sound Waves (1)Reflection of Light (1)Upthrust in Fluids, Archimedes' Principle and Floatation (1)

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Which of the following is a scalar quantity?Read the answer and worked solution →A body covers equal distances in equal intervals of time. Its motion is:Read the answer and worked solution →A body falls freely under gravity. The acceleration due to gravity (g) is approximately:Read the answer and worked solution →Which of the following can be zero for a body that has moved a non-zero distance?Read the answer and worked solution →

Worked practice questions

Which of the following is a scalar quantity?

  1. Speed
  2. Velocity
  3. Displacement
  4. Acceleration
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Correct answer: A. Speed

1. A scalar quantity has only magnitude with no direction. 2. Speed is the rate of change of distance, given as a single positive number. 3. Velocity, displacement and acceleration each carry a direction along with their magnitudes. 4. So speed is the scalar quantity in the list. _Source: Selina Concise Physics ICSE Class 9, Ch 2 'Motion in One Dimension' (aplustopper.com extract)_

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A body covers equal distances in equal intervals of time. Its motion is:

  1. Variable
  2. Accelerated
  3. Uniform
  4. Random
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Correct answer: C. Uniform

1. Uniform motion means the body covers equal distances in equal intervals. 2. Speed and direction remain constant throughout the motion. 3. Variable motion would mean unequal distances in equal intervals. 4. So the described motion is uniform. _Source: Selina Concise Physics ICSE Class 9, Ch 2 'Motion in One Dimension' (aplustopper.com extract)_

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A body falls freely under gravity. The acceleration due to gravity (g) is approximately:

  1. 980 m per second squared
  2. 98 m per second squared
  3. 0.98 m per second squared
  4. 9.8 m per second squared
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Correct answer: D. 9.8 m per second squared

1. The average value of acceleration due to gravity near Earth's surface is about 9.8 metres per second squared. 2. For simpler problems the value 10 metres per second squared is also used. 3. Larger or smaller values change by factors of ten but do not match the textbook average. 4. So the correct value is 9.8 metres per second squared. _Source: Selina Concise Physics ICSE Class 9, Ch 2 'Motion in One Dimension' (aplustopper.com extract)_

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