Question

When a photon stimulates the emission of another photon, the two photons have

• A. Same energy
• B. Same direction
• C. Same phase
• D. Same wavelength

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Same phase
B Same energy
C Same wavelength
D Same direction

A photon with of a particular wavelength stimulates the emission of a photon of same wavelength which will stimulate another photon and so on and therfore the collection of these photons with same wavelength these are called monochromatic they will have same wavelength phase energy and direction and combine to form the laser beam.

So, all options are correct.