Physics Questions and Answers updated daily – General Knowledge
Physics Questions: Solved 254 Physics Questions and answers section with explanation for various online exam preparation, various interviews, General Knowledge Category online test. Category Questions section with detailed description, explanation will help you to master the topic.
Physics Questions
221. Superconductivity means ____________
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Correct Ans:current without facing any resistance
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222. A device which converts AC into DC is known as ________
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Correct Ans:Rectifier
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223. Flywheel is an important part of a steam engine because it ___________
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Correct Ans:helps the engine in keeping the speed uniform
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224. The freezing point of fresh water is _________
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Correct Ans:0 deg C
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225. The damage of the human body due to radiation (?-rays or ?-rays etc,) is measured in ________
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Correct Ans:Rads
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226. The threshold frequency is the frequency below which ________
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Correct Ans:photoelectric emission is it possible
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227. Transition ions absorb light in ____________
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Correct Ans:visible region
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228. The unit of noise pollution (level) is _________.
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Correct Ans:decibel
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229. 1 KHZ signal is used to test which stage?
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Correct Ans:1 F stage
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230. What will happen if a transformer is connected to D.C. voltage?
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Correct Ans:The primary will burn out and no emf will be induced in the secondary
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231. Selectivity of a receiver can be increased by ______________
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Correct Ans:Decreasing number of tuned circuits
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232. The spacing between picture carrier and sound carrier frequency in T.V. is ____________
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Correct Ans:5.5 MHZ
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233. Sound in TV is modulating __________
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Correct Ans:AM
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234. An amplifier is said to suffer from distortion when its output is
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Correct Ans:Noisy
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235. The colour code of 47k ? ± 20% resistor will be __________
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Correct Ans:Yellow, Violet, Orange, Gold
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236. The EMF of every cell of full charge battery is _________
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Correct Ans:2.4v
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237. In a zener diode regulator, zener __________
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Correct Ans:Depends upon current requirement
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238. In a broadcast receiver, most of the selectivity is achieved in ________
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Correct Ans:R F stage
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239. If signal distorts on increasing the volume, where is the fault?
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Correct Ans:Volume control
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240. Good conductor of electricity is .....
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Correct Ans:Silver
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