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Suppose 10^-17 J of energy is needed by ...

Suppose `10^-17 J` of energy is needed by the interior of human eye to see an object. How many photons of green light `(lambda = 550 nm)` are needed to generate this minimum amount of energy ?

A

14

B

28

C

39

D

42

Text Solution

Verified by Experts

The correct Answer is:
B
`E = (nhc)/(lambda)`
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