If h is planck’s constant, the momentum of a photon of wavel... | PHYSICS - WAVE NATURE OF MATTER | SolveeIt

Question

If h is planck’s constant, the momentum of a photon of wavelength 0.01Åis :

$10^{- 2}h$

) $h$

) $10^{2}h$

) $10^{12}h$

Answer

) $10^{12}h$

Explanation

Solution

: Momentum of photon , $p = \frac{Ec}{} = \frac{h\upsilon}{c}$

Where E is the energy of a photon and c is the velocity of light

$\therefore p = \frac{hc}{c\lambda} = \frac{h}{\lambda} = \frac{h}{0.01 \times 10^{- 10}} = 10^{12}h\left\lbrack \because\upsilon = \frac{c}{\lambda} \right\rbrack$

Question: If h is planck’s constant, the momentum of a photon of wavelength 0.01Åis :...

Solution