Optics Question 102

Question: An astronaut is looking down on earth’s surface from a space shuttle at an altitude of 400km. Assuming that the astronaut’s pupil diameter is 5mm and the wavelength of visible light is 500nm. The astronaut will be able to resolve linear object of the size of about

[AIIMS 2003]

Options:

A) 0.5 m

B) 5m

C) 50 m

D) 500 m

Show Answer

Answer:

Correct Answer: C

Solution:

xr=1.22 λdx=1.22 λrd

=1.22×500×109×400×1035×103=50 m



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