Class 12 Physics · Chapter 2 · Test 2
SHM and Circular Motion
43 MCQs
43 questions · 35 min · 43 marks
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Sample questions
The first 5 of 43. Try each one, then tap to see the answer.
Question 1
When a particle moves uniformly in a circle its projection on a diameter executes:
- AUniform motion
- BSimple harmonic motion
- CProjectile motion
- DRotational motion
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Answer: B
The projection of uniform circular motion on a diameter is SHM.
Question 2
The shadow of a ball attached to the rim of a uniformly rotating turntable on a screen:
- AOscillates in simple harmonic motion
- BMoves with constant velocity
- CRemains at rest
- DMoves in a circle
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Answer: A
The shadow oscillates to and fro like a body attached to a spring.
Question 3
The instantaneous displacement of the projection is given by:
- Ax = x0 sin 2ωt
- Bx = x0 tan ωt
- Cx = x0 cos ωt
- Dx = x0/ωt
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Answer: C
From the triangle POQ the displacement of the projection is x = x0 cos ωt.
Question 4
The velocity of a particle in SHM at displacement x is:
- Av = ω(x0 + x)
- Bv = ωx
- Cv = x0/ω
- Dv = ω sqrt(x0² - x²)
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Answer: D
Using v = x0 ω sin ωt and sin²θ + cos²θ = 1 gives v = ω sqrt(x0² - x²).
Question 5
The maximum velocity of a particle in SHM is:
- Ax0 ω
- Bx0 ω²
- Cx0/ω
- Dω/x0
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Answer: A
At the mean position x = 0 so v = x0 ω.
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