Question

0.21
A plane mirror and an object approach each other
with speeds of Sm's and 10 ms respectively. The
speed of the image will be
(A) 5 m's
(B) 15 m's
(C) 20 m's
(D) 25 ms
to
0.22
A point object forms a real clarge image, in
front of a concave mirror of curvature radius
40 cm. If the distance between the object and the
image be 30 cm, then the object distance will be
(A) 10 cm
(B) 30 cm
(C) 40 cm
(D) 60 cm
nd
0.23
Twe plane minors are kept at an angle a. A light
ray striking the two mirrors successively suffers
a deviation of 50/6. The value of ais-
TE
(A)
(B)
(C) 5
12
lel
na
he
0.24
The distance between the image and an object
kept on the principal axis of a spherical mirror of
curvature radius 80 cm is found to be 150 cm
How far is the mage from the centre of curvature -
(A) 30 cm
(B) 50 cm
(C) 120 cm
(D) 160 cm
0.25
A point object is placed on the principal axis of
a spherical mirror. If the distance between the
object and the image be 100 cm, then which of
the following cannot be the focal length of the
mirror
(A) 120 cm
(B) 61.54 cm
(C) 26.67 cm
(D) None of these
res
fa
Q.26
The image of the point (8,4) on the line y = x is-
(A) (2, 4)
(B) (4.2)
(C) (4.8)
(D) (0.8)
​

Answer 1

Answer:

21. 20 ms..

22. 10 cm

23. 5

24,...... 160

.25.... none of them

26. .. (0,8)

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Answer 2

Answer:

Please tell the name of book from which these questions are taken