Created by StemPy LabA compound microscope has an objective of focal length and an eyepiece of focal length , and the two lenses are apart. The microscope is adjusted so that the final image is formed at the least distance of distinct vision, from the eye, which is held close to the eyepiece. The magnifying power of the microscope is closest to
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← A beam of light of intensity 1000 W/m² falls on a flat, perfectly reflecting surface of area 2 m². The beam makes an angle of 60° with the normal to the surface. Taking c = 3×10⁸ m/s, the force exerted by the light on the surface, along its normal, is closest toUnpolarised light of intensity I₀ passes through three ideal polarising sheets placed one after another. The transmission axis of the third sheet is perpendicular to that of the first sheet. The axis of the middle sheet makes an angle of 30° with the axis of the first sheet. The intensity of the light coming out of the third sheet is →
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