JEE Main 2026 Apr 8 Shift 2, Chemistry Q23: Dual Character Of Matter And Radiation

JEE Main2026Apr 8, Shift 2Chemistry

Consider two radiations of wavelengths :

1. $λ_{1} = 2000$ Å

2. $λ_{2} = 6000$ Å

The ratio of the energies of these two radiations $(\frac{E _{1}}{E _{2}})$ is ________. (Nearest integer)

Your answer

Solution

The energy of a photon is $E = \frac{h c}{λ}$ , so $E \propto \frac{1}{λ}$ .

$\frac{E _{1}}{E _{2}} = \frac{λ _{2}}{λ _{1}} = \frac{6000}{2000} = 3$ .

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