Jee Main
Wave Optics
JEE Main 2026 (Online) 4th April Morning Shift
MCQ+4 / -12026
A telescope with objective diameter $R$ is used to observe a distant star emitting light of wavelength 500 nm , at a resolution of $5 \times 10^{-7}$ radian. The value of $R$ is
$\_\_\_\_$ cm .