For an 
to emit light in visible region of the electromagnetic spectrum, it can have energy band gap in the range of, (Plank's constant, 
and speed of light, 
in vacuum)
A
to 
B
to 
C
to 
D
to 
Text Solution
Verified by ExpertsThe correct answer is:
C
We know that Frequency of visible rays range from 
to 
.
Maximum frequency, 
Maximum energy of photon in visible light,
Minimum frequency of visible light
Minimum energy of photon is
So, the correct option matches between the energy 1.7 
to 
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