If 10 power -17 j of energy from monochromatic light is needed for exciting electro magnetic oscillators.if one electro magnetic oscilator absorbs one photon how many electro magnetic oscilator can be excited?
Answers
given info : If 10^-17 J of energy from monochromatic light is needed for exciting electro magnetic oscillators.if one electro magnetic oscilator absorbs one photon.
To find : the number of electromagnetic oscillators can be excited by given energy.
Solution : you didn't mention the frequency of photons. We can't get energy of photons without it.
Let frequency of photons is f
Then, energy of each photon, E = hf
Here h is plank's constant i.e., h = 6.63 × 10¯³⁴ js
Now number of photons = given energy/energy of each photon
= 10^-17/hf
= (10^-17)/(6.63 × 10¯³⁴ × f)
= (10/6.63) × 10¹⁶/f
= (1.5/f) × 10¹⁶
Therefore the of electromagnetic oscillators is (1.5/f) × 10¹⁶
Answer :-
given info : If 10^-17 J of energy from monochromatic light is needed for exciting electro magnetic oscillators.if one electro magnetic oscilator absorbs one photon.
To find : the number of electromagnetic oscillators can be excited by given energy.
Solution : you didn't mention the frequency of photons. We can't get energy of photons without it.
Let frequency of photons is f
Then, energy of each photon, E = hf
Here h is plank's constant i.e., h = 6.63 × 10¯³⁴ js
Now number of photons = given energy/energy of each photon
= 10^-17/hf
= (10^-17)/(6.63 × 10¯³⁴ × f)
= (10/6.63) × 10¹⁶/f
= (1.5/f) × 10¹⁶
Therefore the of electromagnetic oscillators is (1.5/f) × 10¹⁶