Inertia — Homi Bhabha Exam Physics MCQs with Solutions
Free Homi Bhabha Exam Physics Inertia MCQs with step-by-step solutions (6 questions). Part of Laws of Motion & Force. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Inertia · medium · theory
The inertia of a body depends on its:
A. mass ✓ Correct
B. acceleration
C. velocity
D. shape
Solution: Inertia is the tendency to resist a change in the state of motion, and it is measured by (and increases with) mass.
Q2 — Inertia · medium · theory
Dust particles are removed when a carpet is beaten with a stick. This is due to:
A. inertia of rest ✓ Correct
B. friction
C. inertia of direction
D. inertia of motion
Solution: Beating sets the carpet in motion while the dust, by inertia of rest, tends to stay in place and so separates.
Q3 — Inertia · hard · theory
Which of the following bodies, moving at the same speed, has the greatest inertia?
A. A bicycle
B. A car
C. A football
D. A loaded truck ✓ Correct
Solution: Inertia increases with mass; the loaded truck has the largest mass and hence the greatest inertia.
Q4 — Inertia · medium · theory
When a playing card on a glass is flicked sharply, the coin on it drops into the glass. This illustrates:
A. conservation of energy
B. inertia of motion
C. inertia of rest ✓ Correct
D. Newton's third law
Solution: The card moves out quickly, but the coin, by inertia of rest, stays and falls into the glass.
Q5 — Inertia · medium · theory
A passenger in a car falls sideways when the car takes a sharp turn. This is due to:
A. gravity
B. inertia of direction ✓ Correct
C. inertia of motion
D. inertia of rest
Solution: The body tends to keep moving in its original straight-line direction, i.e. inertia of direction.
Q6 — Inertia · hard · theory
Assertion (A): A heavy stone is harder to start moving than a light ball. Reason (R): Greater mass means greater inertia.
A. A is false but R is true
B. Both A and R are true but R is NOT the correct explanation of A
C. A is true but R is false
D. Both A and R are true and R is the correct explanation of A ✓ Correct
Solution: More mass means more inertia, so more force is needed to change its state of rest — R correctly explains A.