Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
The energy gap of an LED is 2.4 eV. When the LED is switched ‘ON’, the momentum of the emitted photons is
A
2.56 × 10-27 kg.m.s-1
B
1.28 × 10-11 kg.m.s-1
C
0.64 × 10-27 kg.m.s-1
D
1.28 × 10-27 kg.m.s-1
Answer
1.28 × 10-27 kg.m.s-1
Explanation
Solution
The correct answer is (D) : 1.28 × 10-27 kg.m.s-1.