Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Consider a helium (He) atom that absorbs a photon of wavelength 330 nm. The change in the velocity (in cm s -1 ) of He atom after the photon absorption is___.
(Assume: Momentum is conserved when photon is absorbed.
Use: Planck constant = 6.6 x 10 -34 J s, Avogadro number = 6 x 10 23 mol -1 , Molar mass of He = 4 g mol -1 )
Text Solution
Verified by ExpertsThe correct answer is:
30
(30)
= 0.30m/s
= 0.30x100 cm/s
= 30 cm/s
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