InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which of the following circular rods. (given radius r and length l ) each made of the same material as whose ends are maintained at the same temperature will conduct most heatA. `r = 2r_(0) , l=2l_(0)`B. `r = 2r_(0) , l=l_(0)`C. `r = r_(0) , l=l_(0)`D. `r = r_(0) , l=2l_(0)` |
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Answer» Correct Answer - B |
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| 252. |
The ratio of radiant energies radiated per unit surface area by two bodies is `16 : 1`, the temperature of hotter body is 1000 K , then the temperature of colder body will beA. 250 KB. 500 KC. 1000 KD. 62.5 K |
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Answer» Correct Answer - b |
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| 253. |
The temperature gradient in a rod of `0.5 m` length is `80^(@)C//m`. It the temperature of hotter end of the rod is `30^(@)C`, then the temperature of the cooler end isA. `40^(@)C`B. `-10^(@)C`C. `10^(@)C`D. `0^(@)C` |
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Answer» Correct Answer - B |
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| 254. |
Assertion : It is hotter over the top of a fire than at the same distacne of the side. Reason : Air surrounding the fire conducts more heat upwardA. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true reason is falseD. If the assertion and reason both are false. |
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Answer» Correct Answer - C |
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| 255. |
A cylindrical rod having temperature `T_(1)` and `T_(2)` at its ends. The rate of flow of heat is `Q_(1) cal//sec`. If all the linear dimensions are doubled keeping temperature constant, then rate of flow of heat `Q_(2)` will be |
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Answer» Correct Answer - B |
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| 256. |
The colour of a star indicates itsA. Distance from the earthB. SizeC. TemperatureD. Mass |
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Answer» Correct Answer - C |
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