NEET Physics Ray Optics and Optical Instruments Questions Solved


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

(a) 0.5 m                    (b) 5 m

(c) 50 m                      (d) 500 m

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