Question

Interference may be seen using two independent: (1)sodium lamp (2)fluorescent lamp (3)leasers (4)mercury lamps

Answer 1

Answer:

Explanation:

Sodium lamps

Answer 2

Interference may be seen using two independent:

3. Lasers

• For interference to occur, two light sources must be coherent or there should be a difference in phase which is highly constant.
• Their radiations must be highly aligned in terms of frequency and wavelength.
• Usually we use a single source with two slits to satisfy all necessary conditions.
• But since, we have lasers we can try our best to assure they are identical and thus perform the interference experiment.
• Mostly, two independent light sources are non-coherent but as per the above question using lasers is the most accurate option.