For normal adjustment, length of astronomical telescope is______________?

Related Mcqs:

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...

Errors in the transmission of power through optic fiber can be minimized by using a______________?

A. Multimode index fiber B. Graded index fiber C. Single mode step index fiber D. Copper wire...

The function of collimeter in spectrometer is________________?

A. to produce parallel beams of light B. to filter the light rays C. to make them D. no function...

Michelson devised the formula to calculate the speed of light_______________?

A. C = 4fd B. C = 8fd C. C = 16fd D. C = 5/2fd...

A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?

A. center of curvature B. focus C. optical center D. aperture...