MCQOPTIONS
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MCQOPTIONS
This section includes 40 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cup of milk is placed in a microwave oven. Tell which statements is false (1) Milk will be heated up only (2) Cup will remain cool (3) Both cup and mild will get hot. |
| A. | Both |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 2. |
A simple pendulum suspended form the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is |
| A. | Infinite |
| B. | T/g |
| C. | Zero |
| D. | G/T |
| Answer» B. T/g | |
| 3. |
At Murree Hills (Assume value of g changes). If we use a simple pendulum as time standard then one second duration will. |
| A. | Increase |
| B. | Decrease |
| C. | Remains same |
| D. | Is zero |
| Answer» B. Decrease | |
| 4. |
Displacement of the body in S.H.M is equal to amplitude when body is at |
| A. | Mean position |
| B. | Else where |
| C. | Extreme position |
| D. | None |
| Answer» D. None | |
| 5. |
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» B. Microwave oven | |
| 6. |
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» D. Neither displacement nor direction of motion | |
| 7. |
S.I unit of frequency is |
| A. | Vibration S-2 |
| B. | Radian |
| C. | Hertz |
| D. | Ms-1 |
| Answer» D. Ms-1 | |
| 8. |
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» C. Equal to square of damping force | |
| 9. |
Simple harmonic motion is a type of |
| A. | Rotational motion |
| B. | Circular motion |
| C. | Musical arrangement |
| D. | Vibratory motion |
| Answer» E. | |
| 10. |
The acceleration of a projection on the diameter for a particle moving along a circle is |
| A. | W2x |
| B. | Wx2 |
| C. | W2x |
| D. | Wx2 |
| Answer» D. Wx2 | |
| 11. |
The displacement of SHM is written as X = X? sin?t if displacement is written by X = X? son ?t then phase constant will be equal to |
| A. | 0? |
| B. | 45? |
| C. | 90? |
| D. | 180? |
| Answer» D. 180? | |
| 12. |
The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body |
| A. | 10 cm |
| B. | 5 cm |
| C. | 15 cm |
| D. | 7.5 cm |
| Answer» C. 15 cm | |
| 13. |
The energy absorbed by a body is ________________ at resonance. |
| A. | Maximum as well minimum |
| B. | Minimum only |
| C. | Maximum only |
| D. | Zero |
| Answer» D. Zero | |
| 14. |
The energy of SHM is maximum at |
| A. | Mean position |
| B. | Extreme position |
| C. | In between mean and extreme |
| D. | All positions during SHM |
| Answer» E. | |
| 15. |
The force responsible for the vibratory motion of the simple pendulum is |
| A. | Mg cos? |
| B. | Mg sin? |
| C. | Mg ton? |
| D. | Mg |
| Answer» C. Mg ton? | |
| 16. |
The frequency of the second pendulum is |
| A. | 1 hertz |
| B. | 0.5 hertz |
| C. | 1.5 hertz |
| D. | 2.5 hertz |
| Answer» C. 1.5 hertz | |
| 17. |
The length of second pendulum is |
| A. | 100 cm |
| B. | 99 cm |
| C. | 99.2 cm |
| D. | 98 cm |
| Answer» D. 98 cm | |
| 18. |
The product of frequency and time period is equal to |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 19. |
The projection of the particle moving in a circle with non-uniform speed executes. |
| A. | S.H.M |
| B. | Vibratory motion |
| C. | Both (b) and (d) |
| D. | None S.H.M |
| Answer» D. None S.H.M | |
| 20. |
The restoring force acting on simple pendulum is given by |
| A. | Mg sin ? |
| B. | Mg sin ? |
| C. | Mg cos ? |
| D. | Mg cos ? |
| Answer» C. Mg cos ? | |
| 21. |
For a simple pendulum the restoring force is caused by |
| A. | Gravity |
| B. | Spring |
| C. | Hand |
| D. | All of these |
| Answer» B. Spring | |
| 22. |
For what displacement the P.E becomes 1/4 of its maximum value? |
| A. | X = x? |
| B. | X = x?/2 |
| C. | X = x?/4 |
| D. | X = x?2/2 |
| Answer» C. X = x?/4 | |
| 23. |
Forced vibration are known as |
| A. | Simple harmonic vibration |
| B. | Natural vibration |
| C. | Driven harmonic vibration |
| D. | Free vibration |
| Answer» D. Free vibration | |
| 24. |
If length of second pendulum becomes four times, then its time period will become |
| A. | Four times |
| B. | Six times |
| C. | Eight times |
| D. | Two times |
| Answer» E. | |
| 25. |
In case of a simple pendulum the cause of damping is |
| A. | Drag force of air |
| B. | Gravity |
| C. | Tension in string |
| D. | None of these |
| Answer» B. Gravity | |
| 26. |
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» D. Neither amplitude nor energy | |
| 27. |
In S.H.M. the velocity of a particle is maximum at |
| A. | Mean position |
| B. | Extreme position |
| C. | Middle between mean and extreme position on the right side |
| D. | Middle between mean and extreme position on the left side |
| Answer» B. Extreme position | |
| 28. |
In vibratory motion |
| A. | P.E. remains constant |
| B. | K.E. remain constant |
| C. | Total energy remain constant |
| D. | Total momentum remain constant |
| Answer» D. Total momentum remain constant | |
| 29. |
Mass attached to a spring executes. |
| A. | Vibratory motion |
| B. | Rotatory motion |
| C. | S.H.M |
| D. | Both (a) and (c) |
| Answer» E. | |
| 30. |
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» E. | |
| 31. |
Total energy of a body executing S.H.M is directly proportional to |
| A. | Square root of amplitude |
| B. | The amplitude |
| C. | Reciprocal of amplitude |
| D. | Square of amplitude |
| Answer» E. | |
| 32. |
The SI unit of force constant is identical with that of |
| A. | Force |
| B. | Pressure |
| C. | Surface tension |
| D. | Loudness |
| Answer» D. Loudness | |
| 33. |
The time period of a second pendulum is |
| A. | 4 seconds |
| B. | 3 seconds |
| C. | 2 seconds |
| D. | 6 seconds |
| Answer» D. 6 seconds | |
| 34. |
The velocity of the mass attached to a spring is maximum at |
| A. | Mean position |
| B. | Extreme position |
| C. | Both (a) and (b) |
| D. | None |
| Answer» B. Extreme position | |
| 35. |
The waveform of S.H.M. is |
| A. | Standing wave |
| B. | Sine wave |
| C. | Square wave |
| D. | None |
| Answer» C. Square wave | |
| 36. |
When one is the correct graph between acceleration a and displacement d for SHM? |
| A. | B |
| Answer» A. B | |
| 37. |
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» E. | |
| 38. |
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» E. | |
| 39. |
When the amplitude of a wave become double its energy become |
| A. | Double |
| B. | Four times |
| C. | One half |
| D. | None time |
| Answer» C. One half | |
| 40. |
Which one dows not work according to resonance? |
| A. | T.V |
| B. | Radio |
| C. | Microwave oven |
| D. | Bulb |
| Answer» E. | |