Assertion (A): To increase the resolving powe | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The resolving power of a telescope is defined as the inverse of the minimum angular separation between two objects that can be just resolved by th

Vedclass · Accepted Answer

If Assertion is true but Reason is false.

Vedclass · Answer

(C) The resolving power of a telescope is defined as the inverse of the minimum angular separation between two objects that can be just resolved by the telescope.The formula for the resolving power of a telescope is $RP = \frac{a}{1.22 \lambda}$,where $a$ is the diameter of the aperture of the objective lens and $\lambda$ is the wavelength of light used.From the formula,it is clear that $RP \propto a$. Therefore,to increase the resolving power,the aperture $(a)$ of the objective lens should be large.Assertion $(A)$ is true because a larger aperture reduces the diffraction limit,allowing for better resolution.Reason $(R)$ states the formula as $\frac{2a}{1.22 \lambda}$,which is incorrect because the correct formula is $\frac{a}{1.22 \lambda}$.Thus,Assertion $(A)$ is true,but Reason $(R)$ is false.

Assertion $(A):$ To increase the resolving power of a telescope,the aperture $(a)$ of the objective lens should be large.
Reason $(R):$ The resolving power of a telescope is given by $\frac{a}{1.22 \lambda}$.

Similar Questions

Resolving power of a microscope can $NOT$ be increased by

$A$ person is observing a bacteria through a compound microscope. For better analysis and to improve the resolving power,he should:

Two poles are separated by a distance of $3.14 \, m$. The resolving power of the human eye is $1 \, min$ of an arc. The maximum distance from which one can identify the two poles distinctly is

The diameter of the objective lens of a telescope is $5.0\, m$ and the wavelength of light is $6000\ \mathring{A}$. The limit of resolution of this telescope will be......$sec$.

If the numerical aperture $(NA)$ of a microscope is increased,then its:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion $(A):$ To increase the resolving power of a telescope,the aperture $(a)$ of the objective lens should be large.Reason $(R):$ The resolving power of a telescope is given by $\frac{a}{1.22 \lambda}$.