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General
Easy
Question
An object is placed in front of a concave mirror of focal length f as shown if figure. Choose the correct shape of the image :
The correct answer is:
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In the figure shown if the object ' O ' moves towards the plane mirror, then the image (which is formed after successive reflections from 
respectively) will move:
In the figure shown if the object ' O ' moves towards the plane mirror, then the image (which is formed after successive reflections from respectively) will move:
physics-General
physics-
In the figure shown, the image of a real object is formed at point I. AB is the principal axis of the mirror. The mirror must be :
In the figure shown, the image of a real object is formed at point I. AB is the principal axis of the mirror. The mirror must be :
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physics-
A ray of light is incident on a concave mirror. It is parallel to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point B to the distance of the focus from the centre of curvature is ( AB is the reflected ray)
A ray of light is incident on a concave mirror. It is parallel to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point B to the distance of the focus from the centre of curvature is ( AB is the reflected ray)
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physics-
The circular boundary of the concave mirror subtends a cone of half angle 
at its centre of curvature. The minimum value of for which ray incident on this mirror parallel to the principle axis suffers reflection more than one is
The circular boundary of the concave mirror subtends a cone of half angle at its centre of curvature. The minimum value of for which ray incident on this mirror parallel to the principle axis suffers reflection more than one is
physics-General
physics-
A concave mirror of focal length 20 cm is cut into two parts from the middle and the two parts are moved perpendicularly by a distance 1 cm from the previous principle axis AB. The distance between the images formed by the two parts. If the object is kept at a distance of 10 cm from the pole of the original principal axis is
A concave mirror of focal length 20 cm is cut into two parts from the middle and the two parts are moved perpendicularly by a distance 1 cm from the previous principle axis AB. The distance between the images formed by the two parts. If the object is kept at a distance of 10 cm from the pole of the original principal axis is
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physics-
Two blocks each of mass 
lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB&CD of the two blocks are made reflecting. The acceleration of two images formed in those two reflecting surfaces w.r.t. each other is:
Two blocks each of mass lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB&CD of the two blocks are made reflecting. The acceleration of two images formed in those two reflecting surfaces w.r.t. each other is:
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physics-
A plane mirror M is arranged parallel to a wall W at a distance l from it. The light produced by a point source ' S ' kept on the wall is reflected by the mirror and produces a light spot on the wall. The mirror moves with velocity V towards the wall. Then
A plane mirror M is arranged parallel to a wall W at a distance l from it. The light produced by a point source ' S ' kept on the wall is reflected by the mirror and produces a light spot on the wall. The mirror moves with velocity V towards the wall. Then
physics-General
physics-
Find the velocity of image of a moving particle O^' in the situation as shown in the figure.
Find the velocity of image of a moving particle O^' in the situation as shown in the figure.
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physics-
As shown in the figure, a particle is placed at 0 in front of a plane mirror M. A man at P can move along path PY and PY'. Then which of the following is true?
As shown in the figure, a particle is placed at 0 in front of a plane mirror M. A man at P can move along path PY and PY'. Then which of the following is true?
physics-General
physics-
Two plane mirrors of length 
are separated by distance and a 
is standing at distance from the connecting line of mirrors as shown in figure. A man 
is walking along a straight line at distance 2 L parallel to the mirrors at speed u. Then the man 
at 
will be able to see image of for total time of
Two plane mirrors of length are separated by distance and a is standing at distance from the connecting line of mirrors as shown in figure. A man is walking along a straight line at distance 2 L parallel to the mirrors at speed u. Then the man at will be able to see image of for total time of
physics-General
physics-
Two mirrors AB and CD are arranged along two parallel lines. The maximum number of images of object O that can be seen by any do server is
Two mirrors AB and CD are arranged along two parallel lines. The maximum number of images of object O that can be seen by any do server is
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physics-
A luminous point source 's' is placed between a plane mirror and a screen in the situation as shown in figure. Then the length of screen which will receive direct light as well as reflected light is
A luminous point source 's' is placed between a plane mirror and a screen in the situation as shown in figure. Then the length of screen which will receive direct light as well as reflected light is
physics-General
physics-
What are the coordinates of the image of S formed by a plane mirror as shown in figure?
What are the coordinates of the image of S formed by a plane mirror as shown in figure?
physics-General
physics-
Sun rays are reflected from a horizontal mirror and fall on a vertical screen. A vertical object of height h is placed on the mirror as shown in the figure. Length of the shadow on the screen is
Sun rays are reflected from a horizontal mirror and fall on a vertical screen. A vertical object of height h is placed on the mirror as shown in the figure. Length of the shadow on the screen is
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physics-
Three plane mirrors are placed such that the angle between the first and second or second and third is the same ' '. A light striking the first mirror, after reflection at the three mirrors emerges opposite to the initial direction. Find the value of ' '.
Three plane mirrors are placed such that the angle between the first and second or second and third is the same ' '. A light striking the first mirror, after reflection at the three mirrors emerges opposite to the initial direction. Find the value of ' '.
physics-General
