List of top Physics Questions on radiation asked in JEE Main

Match List I with List II:

List I		List II
A	Microwaves	i	Radioactive decay of the nucleus
B	Gamma waves	ii	Rapid acceleration and deceleration of electrons in aerials
C	Radio waves	iii	Inner shell electrons
D	X - rays	iv	Klystron valve

Choose the correct answer from the options given below:

To verify Ohm's law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained: If $V_0$ is almost zero, identify the correct statement:

Parallel rays of light of intensity I=912 Wm$^{-2}$ are incident on a spherical black body kept in surroundings of temperature 300 K . Take Stefan constant $\sigma =5.7 \times 1^{-8} Wm ^{-2} K^{-4}$ and assume that the energy exchange with the surroundings is only through radiation The final steady state temperature of the black body is close to