An astronomical telescope has a large aperture to (a) have high resolution. (b) have low dispersion. (c) increase the span of observation. (d) have large wavelength.

Answer: (a). Resolving power of a telescope: RP = (D)/(1.22λ). Large aperture D gives high resolution (and more light-gathering). So the answer is (a) have high resolution.

An astronomical telescope has a large aperture to | MHT CET 2024 (9 May, Shift 2)

Q14MHT CET 2024 · 9 MAY · SHIFT 2Easy

Optical Instruments & the Eye

An astronomical telescope has a large aperture to

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Answer: (a)

Resolving power of a telescope: $RP = \dfrac{D}{1.22\lambda}$ .
Large aperture $D$ gives high resolution (and more light-gathering).
So the answer is (a) have high resolution.

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