A small object is so placed in front of a convex lens of 5 cm focal length that a virtual … formed at distance of 25 cm. Find the…
Answers:
F = 5 cm
V = – 25 cm (Virtual image)
Lens formula : 1/v – 1/u = 1/f
1/-25 – 1/u = 1/5
1/u = – (1/25) – /5 = – (6/25)
u = – (25/6) cm
Magnification, m = v/u = -25/-25/6 = + 6