Assertion: The resolving power of a telescope | vedclass

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(B) The resolving power of a telescope is defined as the inverse of the smallest angular separation between two distant objects that can be just resol

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) The resolving power of a telescope is defined as the inverse of the smallest angular separation between two distant objects that can be just resolved by the telescope.The formula for the resolving power of a telescope is given by: $	ext{Resolving Power} = \frac{D}{1.22 \lambda}$,where $D$ is the diameter of the objective lens and $\lambda$ is the wavelength of light used.From this formula,it is clear that the resolving power is directly proportional to the diameter $D$ of the objective lens. Thus,the Assertion is correct.The Reason states that an objective lens of large diameter collects more light. This statement is physically true,as a larger aperture allows more light to enter the telescope,which increases its light-gathering power (brightness of the image). However,this is not the reason for the increase in resolving power. The resolving power depends on the diffraction limit,not the light-gathering capacity.Therefore,both statements are correct,but the Reason is not the correct explanation for the Assertion.

Assertion: The resolving power of a telescope is more if the diameter of the objective lens is more.
Reason: Objective lens of large diameter collects more light.

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Assertion: The resolving power of a telescope is more if the diameter of the objective lens is more.Reason: Objective lens of large diameter collects more light.