Physics Questions and Answers
| 165. |
A substance is coloured due to the absorption of |
| |
- A. Visible light
- B. Microwave radiation
- C. U.V.light
- D. I.R.radiation
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| 166. |
We cannot see during a fog because of |
| |
- A. Refraction
- B. Reflection of light
- C. Scattering of light
- D. Internal reflection
|
| 167. |
In a reactor, cadmium rods are used for |
| |
- A. speeding neutrons
- B. absorbing neutrons
- C. dispersing neutrons
- D. slowly fast neutrons
|
| 168. |
According to kepler’s first law of planetary motion, planets move in |
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- A. circular effects
- B. a parabola
- C. elliptical orbits
- D. straight lines
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