Physics Questions and Answers
| 125. |
Radar is used to detect |
| |
- A. flying objects
- B. artilleries
- C. military tanks
- D. none of these
|
| 126. |
Kepler’s first law of planetary motion is also called |
| |
- A. law of periods
- B. law of areas
- C. law of orbits
- D. law of distances
|
| 127. |
A light is falling freely after the suspension wire breaks. The weight of a person inside the lift would becomes |
| |
- A. doubled
- B. unchanged
- C. zero
- D. halved
|
| 128. |
The electromagnetic waves are of |
| |
- A. purely electrical in nature
- B. purely magnetic in nature
- C. longitudinal in nature
- D. transverse in nature
|
