InterviewSolution
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InterviewSolution
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Consider the fundamental physics for class XII. Suppose the voltage applied to A is increased. The diffracted beam will have the maximum at a value of `theta` thatA. will be larger then that earlier valueB. will be the same as the earlier valueC. will be less than the earlier valueD. will depend on the target |
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Answer» Correct Answer - c In Davisson and Germer Experiment, if V is the voltage applied to anode, then de-Broglie wavelength associated with electron is `lambda=12.27/(sqrt(V))Å.......(i)` If there is a maxima of the diffracted electrons at an angle `theta`, then `2d sin theta=lambda.........(ii)` From (ii), we note that as `lambda` decreases, the value of `sin theta` decreases, i.e., `theta` decreases. |
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