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Tardigrade
Question
Chemistry
Suppose 10-17 J of energy is needed by the interior of human eye to see an object. How many photons of green light (λ=550 nm ) are needed to generate this minimum amount of energy?
Q. Suppose
1
0
−
17
J
of energy is needed by the interior of human eye to see an object. How many photons of green light
(
λ
=
550
nm
)
are needed to generate this minimum amount of energy?
3018
187
Structure of Atom
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A
14
B
28
C
39
D
42
Solution:
Let the number of photons required
=
n
n
λ
h
c
=
1
0
−
17
n
=
h
c
1
0
−
17
×
λ
=
6.626
×
1
0
−
34
×
3
×
1
0
8
1
0
−
17
×
550
×
1
0
−
9
=
27.6
=
28
photons