Photoelectric Effect-1

JEE Mains 2015 Guidance › Modern physics questions › Photoelectric Effect-1

#Physics #Modern physics

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2 Answers

661

Gaurav Gardi ·2013-03-01 04:19:30

(B),(C)

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Akash Anand Think about C option again
Upvote·0· Reply ·2013-03-01 22:18:18
Gaurav Gardi sorry i did not see it was minimum kinetic energy i thought it was maximum kinectic energy. then the answer will be only (A)
Upvote·0· Reply ·2013-03-02 21:12:44
Gaurav Gardi sorry only (B)
Upvote·0· Reply ·2013-03-04 00:42:32
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1057

Ketan Chandak ·2013-03-01 19:34:49

Max K.E=(1242/200)+2-4.5=3.7eV
If polarity is reversed photoelectrons won't be ejected since (1242/200) is less than effective work function(4.5+2).

Hence,(b) and (c) are correct.

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Akash Anand Think about C option again
Upvote·0· Reply ·2013-03-01 22:18:24
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Basic Integral Calculus Operators Symbols Matrix Cases

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