What is the near point of healthy vision?
15 cm
20 cm
25 cm
30 cm
Nearpoint is the nearest point at which you can see an object clearly. The nearpoint of a normal eye is 25 cm.
The focal length of a spherical mirror of radius of curvature 30 cm is : (a) 10 cm (b) 15 cm (c) 20 cm (d) 30 cm
A concave lens of 20 cm focal length forms an image 15 cm from the lens. What is the object distance?
An object is placed at 30 cm in front of the convex lens of focal length 10 cm. Find out the image distance from the lens?