The distance between a convex lens and a...

The distance between a convex lens and a plane mirror is 10 cm. The parallel rays incident on the convex lens after reflection from the mirror forms image at the optical centre of the lens. Focal length of lens will be

`1.5f`

`2f`

`2.5f`

`4f`

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A convex lens and a plane mirror are kept at a distance of 10 cm as shown in the diagram alongside. Parallel rays incident on the convex lens after reflection from the mirror from an image at the optical cetre. Complete the ray diagram and find out the focal length of the lens.

An object is placed at a distance of 40 cm from a convex lens of focal length 20cm. On the far side of the lens, a concave mirror of focal length 10cm is placed such that the distance of the object from the concave mirror is 100 cm. Then the final image which is formed after refraction from the lens, reflection from the mirror and again refraction from the lens, will be

An object, a convex lens of focal length 20 cm and a plane mirror are arranged as shown in the figure. How far behind the mirror is the second image formed?

Draw ray diagrams showing the image formation by a convex lens when an object is placed (a) between optical centre and focus of the lens (b) between focus and twice the focal length of the lens ( c) at twice the focal length of the lens (d) at infinity , (e) at the focus of the lens

A concave mirror of focal length 20 cm and a convex lens of focal length 10 cm are kept with their optic axes parallel but separated by 0.5 mm as shown in the figure. The distance between the the lens and mirror in 10 cm. An object of height 3 mm is placedon the optic axis of lens at a distnace between the lens and mirror is 10 cm. An object of height 3 mm is placed on the optic axis of lens at a distance 15 cm from the lens. Find the length of the image formed the mirror in mm.

A convex lens of focal length 15 cm and concave mirror of focal length 30 cm are kept their optical axes PQ and RS parallel but separated in vertical direction by 0.6 m, as shown. The distance between the lens and mirror is 30 cm. An upright object AB of height 1.2 m is placed on the optic axic PQ of the lens at a distance of 20 cm from the lens. Find the linear magnification of the second image after reflection from the mirror.

Find the distance of an object from a convex lens if image is two times magnified. Focal length of the lens is 10cm

A convex lens of focal length 15 cm and concave mirror of focal length 30 cm are kept their optical axes PQ and RS parallel but separated in vertical direction by 0.6 m, as shown. The distance between the lens and mirror is 30 cm. An upright object AB of height 1.2 m is placed on the optic axic PQ of the lens at a distance of 20 cm from the lens. As in the lat problem, find the distance of A' below the optic axis of lens.

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