Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed:
(i) at the centre of curvature of a concave mirror
(ii) between the pole P and focus F of a concave mirror
(iii) in front of a convex mirror
(iv) at 2F of a convex lens
(v) in front of a concave lens
Answers
The Ray diagram of case the object is at the centre of curvature of concave mirror is in the fig 1.
And the nature of the image is-
same size, inverted and real.
The Ray diagram of case the object is between pole and focus of concave mirror is in fig 2
And the nature of the image is
large,virtual, erect and behind the mirror
The Ray diagram of case the object is infront of convex mirror is in fig 3.
And the nature of the image is
small in size,virtual,erect
The Ray diagram of case the object is at 2f of convex lens is in fig 4.
And the nature of the image is
inverted, same size and real
The Ray diagram of case the object is in front of concave lens is in fig 5.
And the nature of the image is
real,small in size,erec
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Explanation:
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Answer:
(i) (Refer Fig.1) Nature of image: Real, inverted and same size image is formed at the centre of curvature.
(ii) (Refer Fig. 2) Nature of image: Virtual, enlarged and erect image is formed behind the mirror.
(iii) (Refer Fig. 3) Nature of image: Virtual, erect and diminished, image is formed behind the mirror.
(iv) (Refer Fig. 4) Nature of image: Real, inverted and size to size, image is formed at 2F on the other side of lens.
(v) (Refer Fig. 5) Nature of image: Virtual, erect and diminished image is formed between O and F on the same side of object.
