Entry Test MCQ :: Oscillations
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21. |
Sharpness of resonance is |
A. |
directly proportional to damping force |
B. |
inversely proportional to damping force |
C. |
equal to square of damping force |
D. |
equal to square of damping force |
Answer: Option B
Explanation:
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22. |
Which one dows not work according to resonance? |
A. |
T.V |
B. |
radio |
C. |
microwave oven |
D. |
bulb |
Answer: Option D
Explanation:
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23. |
The restoring force acting on simple pendulum is given by |
A. |
mg sin ? |
B. |
mg sin ? |
C. |
mg cos ? |
D. |
mg cos ? |
Answer: Option B
Explanation:
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24. |
Phase of SHM describes |
A. |
displacement only |
B. |
direction of motion only |
C. |
both displacement and direction of motion |
D. |
neither displacement nor direction of motion |
Answer: Option C
Explanation:
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25. |
Natural frequency of simple pendulum depends upon |
A. |
its mass |
B. |
its length |
C. |
square of its length |
D. |
square root of its length |
Answer: Option D
Explanation:
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26. |
Electrical resonance is observed in |
A. |
radio |
B. |
microwave oven |
C. |
both in radio and microwave oven |
D. |
neither in radio nor in microwave oven |
Answer: Option A
Explanation:
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27. |
Total distance traveled by bob of simple pendulum in one vibration is equal to |
A. |
amplitude |
B. |
square of amplitude |
C. |
2 x amplitude |
D. |
4 x amplitude |
Answer: Option D
Explanation:
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28. |
When K.E energy of SHM is maximum its |
A. |
P.E is zero |
B. |
acceleration is zero |
C. |
restoring force is zero |
D. |
all P.E acceleration and restoring force are zero |
Answer: Option D
Explanation:
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29. |
In damped harmonic oscillation which one decreases? |
A. |
amplitude of vibration |
B. |
energy of vibration |
C. |
both amplitude and energy |
D. |
neither amplitude nor energy |
Answer: Option C
Explanation:
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30. |
Forced vibration are known as |
A. |
simple harmonic vibration |
B. |
natural vibration |
C. |
driven harmonic vibration |
D. |
free vibration |
Answer: Option C
Explanation:
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