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Interference pattern can be produced by ...

Interference pattern can be produced by two identical sources. Here the identical sources mean that-

A

their size is same

B

their wavelength is same

C

the intensity of light emitted by them is same

D

the amplitudes of light waves emitted by them are same

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The correct Answer is:
To answer the question about what is meant by "identical sources" in the context of interference patterns produced by two identical sources, we can break down the explanation into clear steps: ### Step-by-Step Solution: 1. **Understanding Interference**: Interference patterns occur when two or more waves overlap and combine. This can happen with light waves from two sources. 2. **Identical Sources**: In the context of interference, "identical sources" refers to sources that are coherent. Coherent sources are those that maintain a constant phase relationship and have the same frequency. 3. **Coherent Sources**: - **Same Frequency**: The two sources must emit waves of the same frequency. This ensures that the waves can constructively or destructively interfere with each other. - **Constant Phase Difference**: The phase difference between the waves from the two sources must remain constant over time. This is crucial for producing a stable interference pattern. 4. **Wavelength Consideration**: Since the frequency of the waves is the same and the speed of light is constant (C = λf), it follows that the wavelengths (λ) of the waves must also be the same. Thus, identical sources must also have the same wavelength. 5. **Conclusion**: Therefore, when we refer to "identical sources" in the context of producing interference patterns, we mean that these sources are coherent, having the same frequency, same wavelength, and maintaining a constant phase difference. ### Final Answer: Identical sources in the context of interference patterns refer to coherent sources that have the same frequency, the same wavelength, and maintain a constant phase difference. ---
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