Two plane mirrors are inclined at angle 40° between them. Number of images seen of a tiny object kept between them is
(A) Only 8
(B) Only 9
(C) 8 or 9
(D) 9 or 10
1 Answers
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Two mirrors are inclined by an angle `30^(@)`. An object is placed making `10^(@)` with the mirror My Find the positions of the first two images forme
Correct Answer - `10^(@)` and `50^(@)` from `M_(1)` and `20^(@)` and `40^(@)` from `M_(2),11`
2 Answers 1 views
An object of height 4 cm is kept to the left of and on the axis of a converging lens offocal length 10cm at a distance of 15cm from lens. A plane mirr
Correct Answer - 20 cm from the mirror, 8 cm
2 Answers 1 views
rays of light strike a horizontal plane mirror at an angle of `45^(@)`. At what angle should be a second plane mirror be placed in order that the refl
Correct Answer - Second mirror should be inclined to the horizontal at angle of `67.5^(@)`
2 Answers 1 views
State the restrictions for having images produced by spherical mirrors to be appreciably clear.
i. In order to obtain clear images, the formulae for image formation by mirrors or lens follow the given assumptions : Objects and images are situated close to the principal axis. Rays diverging...
2 Answers 1 views
An object .A at 10°C and another object B at 10 K are kept in contact, then heat flows from
Correct option is A) A to B
2 Answers 1 views
Explain the formula to find the number of images formed when an object is placed in between two plane mirrors inclined at an angle θ.
1. If an object is kept between two plane mirrors inclined at an angle θ, multiple images (N) are formed due to multiple reflections from both the mirrors. 2. The number...
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A transparent medium separated from – the surrounding medium by atleast two plane surfaces which are inclined
Correct option is B) a prism
2 Answers 1 views
The angle between the two rectangular plane surfaces of a prism is called the angle of the prism.
D) The angle between the incident ray and refracted ray is called angle of deviation.
2 Answers 1 views
A small object is kept symmetrically between two plane mirrors inclined at 38°. This angle is now gradually increased to 41°
The object is kept symmetrically between two plane mirrors. This implies the object is placed at angle bisector. Thus, for θ = 38°, n = \(\frac{360}{38}\) = 9.47 As it is not integral, N =...
2 Answers 3 views
The relation among angle of incidence (i1) angle of emergence (i1) angle of deviation (d) and angle of prism (A)
C) A + d = i1 + i2
2 Answers 1 views