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Wave Optics question

2020 · Q118
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Wave Optics question

2020 · Q118

NEETPhysicsWave OpticsMCQ+4 / −1
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
  1. A
    1.83 ×\times× 10-7 rad
  2. B
    7.32 ×\times× 10-7 rad
  3. C
    6.00 ×\times× 10-7 rad
  4. D
    3.66 ×\times× 10-7 rad
View written solutionFree

Correct answer: D

Limit of Resolution for a Telescope is

θ=1.22λd\theta = 1.22{\lambda \over d}θ=1.22dλ​

Given, λ\lambda λ = 600 ×\times× 10-9; d = 2 m

By substituting the values, we get

θ\theta θ = 3.66 ×\times× 10-7 rad

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