If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is

If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is

Options

(a) 10⁻² h
(b) h
(c) 10² h
(d) 10¹² h

Correct Answer:

10¹² h

Explanation:

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  • momentum is given by p=h/lambda
    As h is constant so p is inversely proportional to lambda. The value of lambda is 0.01 angstrom I.e, 1×102 Angstrom. and angstrom is equals to 10 raised to the power 10. so the equation becomes p=1/1×102×1010. p=1/1×1012
    p=10 raised to the power -12. So the answer is ×10-12.

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