Single Choice

What should be the mass of the photon of sodium if its wavelength is $$5894 \mathring { A }$$. The velocity of light is $$3\times { 10 }^{ 8 }\ { metre }/{ second }$$ and the value of h is $$6.6252 \times { 10 }^{ -34 } kg\ { { m }^{ 2 } }/{ s\ }?$$

A$$3.746 \times { 10 }^{ -26 }\ kg$$
B$$3.746 \times { 10 }^{ -30 }\ kg$$
C$$3.746 \times { 10 }^{ -34 }\ kg$$
D$$3.746 \times { 10 }^{ -36 }\ kg$$
Correct Answer

Solution

According to debroglie Wavelength
$$\lambda =\cfrac { h }{ mu } $$
$$m=\cfrac { h }{ \lambda u } $$
$$m=\cfrac { 6.6252\times { 10 }^{ -34 }kg\quad { m }^{ 2 }/s }{ 3\times { 10 }^{ 8 }m/s\times 5894\times { 10 }^{ -10 }m } $$
$$m=3.746\times { 10 }^{ -36 }$$

SIMILAR QUESTIONS

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