AIIMS 26 May 2019 Morning Question Paper with solutions for online practice

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Question : 73 of 146
 
Marks: +1, -0
A bulb is emitted electromagnetic radiation of 660 nm wave length. The Total energy of radiation is 3x10−18J The number of emitted photon will be :
(h=6.6×10−34J×s,C=3×108
m
s
)
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