MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The periodic time of a body executing simple harmonic motion is 4s. After how many intervals from time t=0, its displacement will be half of its amplitude? |
| A. | 1⁄2 s |
| B. | 1/3 s |
| C. | 1⁄4 s |
| D. | 1/6 s |
| Answer» C. 1⁄4 s | |
| 2. |
A spring (spring constant = k) is cut into 4 equal parts and two parts are connected in parallel. What is the effective spring constant? |
| A. | 4k |
| B. | 16k |
| C. | 8k |
| D. | 6k |
| Answer» D. 6k | |
| 3. |
Statement: Water in a U-tube executes simple harmonic motion. The time period for mercury filled up to the same height in the U-tube be greater than that in case of water.Reason: The amplitude of an oscillating pendulum goes on increasing. |
| A. | Both statement and reason are true and the reason is the correct explanation of the statement |
| B. | Both statement and reason are true but the reason is not the correct explanation of the statement |
| C. | Statement is true, but the reason is false |
| D. | Statement and reason are false |
| Answer» E. | |
| 4. |
If a spring of mass 30kg has a spring constant of 15N/m, then its time period is ___________ |
| A. | 2πs |
| B. | 2√2 πs |
| C. | 2√2π s |
| D. | 2√2 s |
| Answer» C. 2√2π s | |
| 5. |
The ratio of frequencies of two pendulums is 2:3 then their lengths are in ratio ___________ |
| A. | √(2/3) |
| B. | √(3/2) |
| C. | 4/9 |
| D. | 9/4 |
| Answer» E. | |
| 6. |
Two simple motions are represented byy1=5(sin2πt+√3 cos2πt)y2=5sin(2πt+π/4)The ratio of the amplitude of two simple harmonic motions is? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 2:1 |
| D. | 1:√3 |
| Answer» D. 1:√3 | |
| 7. |
The total energy of a particle executing simple harmonic motion is ___________ |
| A. | ∝x |
| B. | ∝x2 |
| C. | Independent of x |
| D. | ∝√x |
| Answer» D. ∝√x | |
| 8. |
A_SPRING_(SPRING_CONSTANT_=_K)_IS_CUT_INTO_4_EQUAL_PARTS_AND_TWO_PARTS_ARE_CONNECTED_IN_PARALLEL._WHAT_IS_THE_EFFECTIVE_SPRING_CONSTANT??$ |
| A. | 4k |
| B. | 16k |
| C. | 8k |
| D. | 6k |
| Answer» D. 6k | |
| 9. |
The_periodic_time_of_a_body_executing_simple_harmonic_motion_is_4s._After_how_many_intervals_from_time_t=0,_its_displacement_will_be_half_of_its_amplitude?$ |
| A. | ¬Ω s |
| B. | 1/3 s |
| C. | ¼ s |
| D. | 1/6 s |
| Answer» C. ¬¨¬®¬¨‚à´ s | |
| 10. |
If a spring of mass 30kg has a spring constant of 15N/m, then its time period is |
| A. | 2πs |
| B. | 2√2 πs |
| C. | 2√2π s |
| D. | 2‚àö2 s |
| Answer» C. 2‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ2‚âà√¨‚àö√ë s | |
| 11. |
For a particle executing simple harmonic motion, which of the following statements is not correct? |
| A. | Total energy is always directed toward a fixed point |
| B. | Restoring force is always directed towards a fixed point |
| C. | Restoring force is maximum at the extreme positions |
| D. | Acceleration of the particle is maximum at the equilibrium position |
| Answer» E. | |
| 12. |
The ratio of frequencies of two pendulums is 2:3 then their lengths are in ratio |
| A. | ‚àö(2/3) |
| B. | ‚àö(3/2) |
| C. | 4/9 |
| D. | 9/4 |
| Answer» E. | |
| 13. |
Two simple motions are represented by |
| A. | |
| B. | |
| C. | |
| Answer» D. | |
| 14. |
A body executes simple harmonic motion. The potential energy, the kinetic energy and total energy are measured as a function of displacement x. Which of the following statements is true? |
| A. | Kinetic energy is maximum when x =0 |
| B. | Total energy is zero, when x = 0 |
| C. | Kinetic energy is maximum when x is maximum |
| D. | Potential energy is maximum when x = 0 |
| Answer» B. Total energy is zero, when x = 0 | |
| 15. |
The total energy of a particle executing simple harmonic motion is |
| A. | ‚àùx |
| B. | ‚àùx<sup>2</sup> |
| C. | Independent of x |
| D. | ‚àù‚àöx |
| Answer» D. ‚Äö√Ñ√∂‚àö‚Ć‚àöœÄ‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇx | |
| 16. |
The bob of the pendulum moves faster at the lowest position for a larger amplitude. |
| A. | True |
| B. | False |
| Answer» B. False | |