Question

Question no 24 and 25

24. A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens?
(1) Real, inverted, height = 1 cm
(2) Virtual, upright, height = 1 cm
(3) Virtual, upright, height = 0.5 cm
(4) Real, inverted, height = 4 cm

25. A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite side. If the lens is removed the point where the rays meet will move 5 cm closer to the lens. The focal length of the lens is

(1) -30 cm (2) 5 cm
(3) -10 cm (4) 20 cm

Answer 1

Answer:

24

Ans 4

Explanation:

Thanks for Reading

I answer next question

I think +5

Answer 2

Answer:

1)

1. 3.5cm
2. 7.5cm
3. 1.5cm
4. 16cm

2)

1. 0.9
2. 0.5
3. 1
4. 1