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Assertion : The increase in wavelength d...

Assertion : The increase in wavelength due to doppler effect is termed as red shift.
Reason : In red shift, a wavelength in the middle of the visible region of the spectrum moves towards the violet end of the spectrum.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion and reason question, we will evaluate both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states: "The increase in wavelength due to Doppler effect is termed as red shift." - The Doppler effect refers to the change in frequency (and consequently wavelength) of a wave in relation to an observer moving relative to the source of the wave. - When the source of light is moving away from the observer, the observed wavelength increases, which is referred to as "redshift." This is because red light has the longest wavelength in the visible spectrum, and thus, an increase in wavelength corresponds to a shift towards the red end of the spectrum. **Conclusion for Step 1**: The assertion is true. ### Step 2: Analyze the Reason The reason states: "In red shift, a wavelength in the middle of the visible region of the spectrum moves towards the violet end of the spectrum." - In reality, redshift implies that wavelengths are moving towards the red end of the spectrum, not the violet end. The violet end of the spectrum corresponds to shorter wavelengths, which is the opposite of what redshift indicates. **Conclusion for Step 2**: The reason is false. ### Step 3: Final Evaluation Now we can summarize our findings: - The assertion is true. - The reason is false. Thus, the correct conclusion is that the assertion is true, but the reason is false. ### Final Answer - Assertion: True - Reason: False
To solve the assertion and reason question, we will evaluate both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states: "The increase in wavelength due to Doppler effect is termed as red shift." - The Doppler effect refers to the change in frequency (and consequently wavelength) of a wave in relation to an observer moving relative to the source of the wave. - When the source of light is moving away from the observer, the observed wavelength increases, which is referred to as "redshift." This is because red light has the longest wavelength in the visible spectrum, and thus, an increase in wavelength corresponds to a shift towards the red end of the spectrum. ...
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