Some distant star is to be observed by some telescope of diameter of objective lens a, at an angular resolution of 3.0×10⁻⁷ radian. If the wavelength of light from the star reaching the telescope is 500 nm, the minimum diameter of the objective lens of the telescope is _ _ _ cm. (nearest interger)

Optics: JEE Main 2026 Physics question

JEE Main 2026 · 8 Apr, Evening shift · Q47

JEE Main 20268 Apr, Evening shiftPhysicsMediumOptics190× since 2002

Some distant star is to be observed by some telescope of diameter of objective lens

a

, at an angular resolution of

3.0\times10^{-7}

radian. If the wavelength of light from the star reaching the telescope is 500 nm, the minimum diameter of the objective lens of the telescope is ______ cm. (nearest interger)

Your answerType your answer. Integers and decimals are accepted.

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