Geometrical OpticsHard
Question
If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. Calculate the focal length of objective.
Options
A.100 cm
B.10 cm
C.20 cm
D.25 cm
More Geometrical Optics Questions
A film projector magnifies a film of area 100 square centimeter on screen. If linear magnification is 4 then area of mag...A person wears glasses of power - 2.5 D. The defect of the eye and the far point of the person without the glasses are r...Graph of position of image vs position of point object from a convex lens is shown. Then, focal length of the lens is...A diverging beam of light from a source S having divergence angle fall symmetrically on a glass slab as shown. The angle...A thin prism P1 with angle 6o and made from glass of refractive index 1.54 is combined with another thin prism P2 of ref...