Physics Questions and Answers
| 177. |
Which substance is used to make rubber strong? |
| |
- A. sponge
- B. iron
- C. sulphur
- D. chlorine
|
| 178. |
If sound persists even after its source has stoped producing sound, then its called |
| |
- A. free vibration
- B. resonance
- C. reverberation
- D. forced vibration
|
| 179. |
When the speed of the body is doubled, its kinetic energy becomes |
| |
- A. half
- B. doubled
- C. one–fourth
- D. quadruple
|
| 180. |
When a body moves with uniform velocity its acceleration is |
| |
- A. maximum
- B. doubled
- C. zero
- D. tripled
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