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यदि किसी मुक्त इलेक्ट्रॉन की गतिज ऊर्जा दोगुनी हो जाये तो इसका डी - ब्रोग्ली तरंगदैघ्र्य में किस गांक द्वारा परिवर्तन हो जायेगा ---

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यदि किसी मुक्त इलेक्ट्रॉन की गतिज ऊर्जा दोगुनी हो जाये तो इसका डी - ब्रोग्ली तरंगदैघ्र्य में किस गांक द्वारा परिवर्तन हो जायेगा ---
A. `sqrt2`
B. `1/2`
C. `sqrt3`
D. `1/sqrt2`
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Correct Answer - D
`lamda = h/sqrt(2mE)`से, `lamda_2/lamda_1 = sqrt(E_1/E_2)= sqrt(E_1/(2E_1))`
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