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.Management Sciences
Category: Optical Instruments
Final image produced by a compound microscope is_____________?
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A. real and inverted
B. real and erect
C. virtual and erect
D. virtual and inverted
A lens which converges a beam of parallel rays to a point is called______________?
A. diverging (or concave) lens
B. converging (or convex) lens
C. plano concave lens
D. plano convex lens
Michelson calculated the speed of light using the instruments______________?
A. spectrometer
B. galvanometer
C. interferometer
D. none of these
The diameter of a lens is called________________?
A. focal length
B. principal axis
C. aperture
D. radius of curvature
Magnifying power of simple microscope______________?
A. increase with increase in focal length
B. increase with decrease in focal length
C. no effect with decrease or increase with focal length
D. list distance of distinct vision
Dioptre power of an concave lens of 10 cm focal length is_______________?
A. 10 dioptre
B. 10 dioptre
C. 1 / 10 dioptre
D. 1 / 10 dioptre
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