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Rachel Parveen Agate
Asked: 2022-11-06T16:14:58+05:30 In:

A heated body maitained at T K emits thermal radiation of total energy E with a maximum intensity at frequency v. The emissivity of the material is 0.5. If the temperature of the body be increased and maintained at temperature 3T K, then :-
(i) The maximum intensity of the emitted radiation will occur at frequency v/3
(ii) The maximum intensity of the emitted radiation will occur at frequency 3v.
(iii) The total energy of emitted radiation will become 81 E
(iv) The total energy of emitted radiation will become 27 E
A. i & ii
B. ii & iii
C. i & iv
D. i, ii & iv

A heated body maitained at T K emits thermal radiation of total energy E with a maximum intensity at frequency v. The emissivity of the material is 0.5. If the temperature of the body be increased and maintained at temperature 3T K, then :-
(i) The maximum intensity of the emitted radiation will occur at frequency v/3
(ii) The maximum intensity of the emitted radiation will occur at frequency 3v.
(iii) The total energy of emitted radiation will become 81 E
(iv) The total energy of emitted radiation will become 27 E
A. i & ii
B. ii & iii
C. i & iv
D. i, ii & iv
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  1. Correct Answer – B

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