Q15 / 90 · JEE Main 2018 (16 Apr Online) · Chemistry

Which of the following statements is false?

A
Splitting of spectral lines in electrical field is called Stark effect
B
Frequency of emitted radiation from a black body goes from a higher wavelength to lower wavelength as the temperature increases
C
Photon has momentum as well as wavelength
Correct answer
D
Rydberg constant has unit of energy

Solution

Rydberg constant has unit

{l e n g t h}^{- 1}

\frac{1}{λ} = {Rz}^{2} [\frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}}]; unit of R = {Length}^{- 1} ({cm}^{- 1})

Hence, the correct answer is option: 'D'.

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