NEET Questions Solved


The momentum of the photon of wavelength 5000Å will be

(a) 1.3×10-27 kg-m/sec         (b) 1.3×10-28 kg-m/sec
(c) 4×1029 kg-m/sec              (d) 4×10-18 kg-m/sec

(a) p=hλ=6.6×10-345000×10-10=1.3×10-27 kg-m/s

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