Question

Conditions for producing steady interference pattern.​

Answer 1

Answer:

The two sources of light must be coherent. That is these two sources should emit light waves with a constant phase difference. In such case, coherent sources are obtained from single source. The amplitudes of waves must be equal.

Explanation:

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Answer 2

✪ Conditions for steady interference pattern:

➜ The two sources of light must be monochromatic.

➜ The two sources of light must be coherent.

➜ The light from sources must be equally bright.

➜ The two sources of light must be narrow.

➜ The two sources must be close to each other.

➜ The screen should be kept at sufficiently far distance from two sources.

➜ Light from the sources must travel in same direction.

➜ The light from two sources should be equally polarised.

✎ Points to be noted :

➊ Monochromatic: single wavelength.

➋ Coherent sources : The sources of light which emits continuous light waves of the same wavelength, same frequency and in same phase or having a constant phase difference are called as coherent sources.