An image is formed at distance of 30 cm from the centre of convex lens of focal length 15 cm. The distance of the object is ………………..
A) 2 cm
B) 15 cm
C) 30 cm
D) 45 cm
Answered Feb 05, 2023
Correct option is C) 30 cm
C) same side of the lens
A) at the centre of the curvature
Correct option is C) 20 cm
Correct option is A) -37.5 cm
Correct option is B) 20 cm
Correct option is A) 20 cm
Correct option is C) 40 cm
Given: f = 2 cm, v = D = 25 cm To find: Magnifying power (M.P.) Formula: M.P = 1 + \(\frac{D}{f}\) Calculation: From formula, M.P = 1 + \(\frac{25}{2}\) M.P. = 1 + 12.5 = 13.5
U = -12 f = -10 1/v - 1/u = 1/f 1/v + 1/12 = 1/10 1/v = 1/60 \(-\frac{1}{v^2} \)dv or \(\frac{1}{u^2} \)du du = \(\frac{v^2}{u^2} \)du \( \frac{v}{u} \)= same path △u1 = △u2 = 1mm △u1 = △v2 △v2 = vf - vi x2 = △v2 + 1mm x2...
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