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A star is emitting light at the wavelength of 5000 A. Determine the limit of resolution of a telescope having an objective of diameter of 200 inch. - Physics

Sum

A star is emitting light at the wavelength of 5000 A. Determine the limit of resolution of a telescope having an objective of a diameter of 200 inch.

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Solution

Data: λ = 5000 Å = 5 × 10-7 m

D = 200 × 2.54 cm = 5.08 m

θ = `(1.22 lambda)/"D"`

`= (1.22 xx 5 xx 10^-7)/5.08`

= 1.2 × 10-7 rad

Concept: Diffraction of Light
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APPEARS IN

Balbharati Physics 12th Standard HSC Maharashtra State Board
Chapter 7 Wave Optics
Exercises | Q 23 | Page 185
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