A) \[0.8268\times {{10}^{-34}}kg\]
B) \[1.2876\times {{10}^{-33}}kg\]
C) \[1.4285\times {{10}^{-32}}kg\]
D) \[1.8884\times {{10}^{-32}}kg\]
Correct Answer: C
Solution :
| [c] We know that \[\lambda =\frac{h}{mv}\] ; \[\therefore \] \[m=\frac{h}{m\lambda }\] |
| The velocity of photon (v) = \[3\times {{10}^{8}}m{{\sec }^{-1}}\] |
| \[\lambda =1.54\times {{10}^{-8}}cm=1.54\times {{10}^{-10}}meter\] |
| \[\therefore \]\[m=\frac{6.626\times {{10}^{-34}}Js}{1.54\times {{10}^{-10}}m\times 3\times {{10}^{8}}m\,{{\sec }^{-1}}}\] |
| \[=\,1.4285\times {{10}^{-32}}kg\]. |
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