The speed of a photon is one hundredth of the speed of light in vacuum. What is the de Broglie wavelength ? Assume that one mole of protons has a mass equal to one gram. h=6.626 × 10−27 erg sec
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a
3.31 × 10−3Ao
b
1.33 × 10−3Ao
c
3.13 × 10−2Ao
d
1.31 × 10−2Ao
answer is B.
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Detailed Solution
m=16.023 × 1023gλ=hmv=6.626 × 10−271 ×3 × 108 cm sec−1 × 6.023 × 1023=1.33 × 10−11 cm =1.33×10-3A0
The speed of a photon is one hundredth of the speed of light in vacuum. What is the de Broglie wavelength ? Assume that one mole of protons has a mass equal to one gram. h=6.626 × 10−27 erg sec