good one

JEE Mains 2015 Answers › Optics questions › good one

an accelerated electron strikes a target in a x ray tube with kinetic energy K. energy lost in the forst collision yields a photon of wavelength Î». if 50% of the remaining energy is lost in next collision , find the wavelength of the photon emitted during this collision.

#Physics #Optics

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5 Answers

21

tapanmast Vora ·2009-03-30 23:40:03

is it 3hc/2K

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39

Dr.House ·2009-03-30 23:41:08

no way near the answer

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1

The Race begins... ·2009-03-30 23:44:28

energy left after first collision = K - hc/Î»

energy lost during second collision = (KÎ»-hc)/2Î» (50% of remaining energy)

This is equal to the energy of emitted photon whose wavelength is Î»' (say)

hc/Î»' = (KÎ»-hc)/2Î»

=> Î»' = 2hcÎ»/(KÎ»-hc)

correct me if i am wrong !

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21

tapanmast Vora ·2009-03-30 23:46:24

Are the collisions identical???

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39

Dr.House ·2009-03-30 23:46:33

well perfect answer. u r rite

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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