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Thermal Properties of Matter

JEE Main level, single correct, medium

123 of 126

Question 123 of 126

If the temperature of the sun were to increase from $T$ to $2 T$ and its radius from $R$ to $2 R$ , then the ratio of the radiant energy received on earth to what it was previously will be

Show answer and solution

Answer: (D) 64

According to stefan's law,

P \propto A T^4

and

A \propto r^2

P \propto r^2 T^4

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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More Physics practice

Thermal Properties of MatterA black body at temperature $T_1 = 300\,\text{K}$ radiates power $81\,\text{W}$ . If its temperature is raised to $T_2 = 600\,\text{K}$ , the radiated power is (in W):
Thermal Properties of MatterThe efficiency of a Carnot engine operating between $27^\circ\text{C}$ and $327^\circ\text{C}$ is:
Thermal Properties of MatterThe temperature of a body in air falls from $40^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ in 4 minutes. The temperature of the air is $16^{\circ} \mathrm{C}$ . The temperature of the body in the next 4 minutes will be:
Thermal Properties of MatterWhich of the following figure represents the relation between Celsius and Fahrenheit temperatures ?
Thermal Properties of MatterOn celcius scale the temperature of body increases by $40^{\circ} \mathrm{C}$ . The increase in temperature on Fahrenheit scale is :
Thermal Properties of MatterOn a temperature scale ' $X$ ', the boiling point of water is $65^{\circ}X$ and the freezing point is $-15^{\circ}X$ . Assuming that the $X$ scale is linear. The equivalent temperature corresponding to $-95^{\circ}X$ on the Fahrenheit scale would be

JEE Main Physics practice question on Thermal Properties of Matter (Radiation), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.

If the temperature of the sun were to increase from TTT to 2T2 T2T and its radius from RRR to 2R2 R2R, then the ratio of the radiant energy received on earth to what it was previously will be

JEE Main question paper PDF

More Physics practice

If the temperature of the sun were to increase from $T$ to $2 T$ and its radius from $R$ to $2 R$ , then the ratio of the radiant energy received on earth to what it was previously will be