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Electromagnetic radiation, photoelectric effect, hydrogen spectrum

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Every question from past board papers on Electromagnetic radiation, photoelectric effect, hydrogen spectrum, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes \(n=2 \to n=3\) and \(n=4 \to n=6\) transitions, respectively, is

    4 marks · See worked answer →

NEET UG 2021 question paper (official, booklet M4)

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  1. Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures :

    four P vs V graphs for 200 K, 400 K, 600 K, options 1-4

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  2. A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, c=\(3.0\times10^8\) ms\(^{-1}\)]

    4 marks · See worked answer →