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NEET - Physics
Radiation Practice Q & A
Q:11
According to Kirchhoff’s law of radiation which of the following relation is correct
$E_{b}=E_{a}$
$E_{b}=\dfrac{E}{a}$
$E_{b}=E^{2}a$
$E_{b}=E-a$
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A cup of tea cools from 80°C to 60°C in one minute. The ambient temperature is 30°C. in cooling from 60°C to 50°C, it will take.
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