Parallel rays of light, falling on a concave lens, appear to diverge from a point

(a) at infinity
(b) at twice focal length
(c) at the focus
(d) between focus and the lens

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Solution

(c) At the focus
Parallel rays of light falling on a concave lens appear to diverge from the principal focus.

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Similar questions

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

Question 33
Draw ray diagrams showing the image formation by a concave lens when an object is placed

(a) at the focus of the lens
(b) between focus and twice the focal length of the lens
(c) beyond twice the focal length of the lens

Q. An image of the same size is obtained if the object is placed in front of a convex lens

(a) at infinity
(b) at the focus
(c) at twice the focal length
(d) between focus and the lens

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

(a) At the principal focus of the lens

(b) At twice the focal length

(d) Between the optical centre of the lens and its principal focus.

Q. Question 3
Where should an object be placed in front of a convex lens to get a real image of the size of the object?

(a) At the principal focus of the lens
(b) At twice the focal length
(c) At infinity
(d) Between the optical centre of the lens and its principal focus

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Parallel rays of light, falling on a concave lens, appear to diverge from a point (a) at infinity (b) at twice focal length (c) at the focus (d) between focus and the lens

(c) At the focus Parallel rays of light falling on a concave lens appear to diverge from the principal focus.

Parallel rays of light, falling on a concave lens, appear to diverge from a point

(a) at infinity
(b) at twice focal length
(c) at the focus
(d) between focus and the lens

(c) At the focus
Parallel rays of light falling on a concave lens appear to diverge from the principal focus.