An object is placed at a distance of 5 cm from a convex lens of focal length 10 cm, then the image
An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image is formed on the other side of the lens at a 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 lens?
An object is placed 40 cm from a convex lens of focal length 20 cm. Calculate image distance.
Complete the following sentences :
(a) An object is placed at a distance of more than 40 cm from a convex lens of focal length 20 cm. The image formed is real, inverted and ..........
(b) An object is placed at a distance 2f from a convex of lens of focal length f. The size of image formed is ............ that of the object.
(c) An object is placed at a distance 5 cm from a convex of focal length 10 cm. The image formed is virtual, upright and ............
For an object placed at a distance 20 cm in front of a convex lens, the image is at a distance 20 cm behind the lens. The focal length of convex lens is :
(a) 20 cm (b) 10 cm (c) 15 cm (d) 40 cm