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A thermos flask is polished well...

A thermos flask is polished well

A

to make attractive

B

for shining

C

to absorb all radiations from outside

D

to reflect all radiations from outside

Text Solution

Verified by Experts

The correct Answer is:
D
The polished surface reflects all the radiation.
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NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Absorption, reflection and transmission of heat radiation)
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  11. The transmission of heat by molecular collision is called

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  12. When thermal radiations incident on athermanous medium, the temperatur...

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  13. The coefficient of absorption of the thermal radiation of black body ...

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  14. The sum of the absorptance, reflectance and transmittance of a body is

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  15. The substance which are transparent to thermal radiation are

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  17. The coefficient of transmission is the ratio of

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  18. The coefficient of reflection is the ratio of

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