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Two spheres P and Q of the same colour a...

Two spheres P and Q of the same colour and having radii 4 cm and 2 cm are kept at `127^(@)C and 527^(@)C` respectively. The ratio of the energies radiated by P and Q

A

`1 : 2`

B

`1 : 4`

C

`3 : 1`

D

`4 : 1`

Text Solution

Verified by Experts

The correct Answer is:
B
`Q_(1)/Q_(2)=(r_(1)^(2))/(r_(2)^(2))(T_(1)^(4))/(T_(2)^(4))=1/4`
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