CUET · PHYSICS · PYQ PAPER 2023
The resolving power of a refracting type telescope can be increased by :
- A Choosing a large diameter objective lens
- B Choosing a small diameter objective lens
- C Increasing wavelength of light
- D Using an objective lens of large focal length
Answer & Solution
Correct Answer
(A) Choosing a large diameter objective lens
Step-by-step Solution
Detailed explanation
The resolving power of a telescope is given by \(R . P .=\frac{D}{1.22 \lambda^{\prime}}\), where \(D\) is the diameter of the objective lens. Therefore, increasing the diameter ( \(D\) ) directly increases the telescope's ability to distinguish between two closely spaced…
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