General Knowledge - Physics
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Exercise"To err is human; to forgive, divine."
- Alexander Pope
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| 37. |
Inside an aeroplane, flying at a high altitude, |
| A. |
the pressure is the same as that outside | | B. |
normal atmospheric pressure is maintained by the use of air pumps | | C. |
the pressure inside is less than the pressure outside | | D. |
normal humidity and partial vacuum are maintained |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 38. |
Sound travels with a different speed in media. In what order does the velocity of sound increase in these media? |
| A. |
Water, iron and air | | B. |
Iron, air and water | | C. |
Air, water and iron | | D. |
Iron, water and air |
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
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| 39. |
One thousand microns is equal to |
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
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| 40. |
Sound travels at the fastest speed in |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 41. |
oil raise up the wick in a lamp. The principle involves |
| A. |
the diffusion of oil through the wick | | B. |
the liquid state of oil | | C. |
capillary action phenomenon | | D. |
volatility of oil |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 42. |
Superconductors are substances which |
| A. |
conduct electricity at low temperature | | B. |
offer high resistance to the flow of current | | C. |
offer no resistance to the flow of electricity | | D. |
conduct electricity at high temperatures |
Answer: Option E
Explanation:
No answer description available for this question. Let us discuss.
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