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The solar constant for a planet is sum. ...

The solar constant for a planet is `sum`. The surface temperature of the sun is T K. if the sun subtends an angle `theta` at the planet, then

A

`sum prop T^(4)`

B

`sum prop T^(2)`

C

`sum prop theta^(2)`

D

`sum prop theta`

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The correct Answer is:
A, C
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