Q

What is the power of a convex lens of focal length 40 cm?

RRB Group-D 30/08/2022 / Shift-III 2022
✓ Answer: C 2.5 D
P = 1/0.40 = +2.5 D.
← Previous Question Next Question →

📚 Related Questions — Light

1 An object is 15 cm in front of a convex lens of… 2 The refractive index of diamond is 2.42. What is the speed of… 3 A convex lens of power 5 D is in contact with a… 4 The path of a beam of light is visible through a _____… 5 A 3 cm tall object is 9 cm in front of a… 6 A student places a candle at a distance greater than twice the…