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Recent questions tagged reflection-by-mirrors
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A short linear object of length b lies along the axis of a concave mirror of focal length f at a distance u from pole of mirror , The size of image is approximate equal to :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
difficult
asked
Feb 19, 2014
by
meena.p
1
answer
A concave mirror has a focal length 20 cm. The distance between the two positions of object for which the image size is double of object size.
jeemain
physics
class12
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 19, 2014
by
meena.p
1
answer
Two plane mirrors A and B are aligned parallel to each other as shown. A light ray is incident at an angle of $30^{\circ}$ at a point just inside one end of A. The plane of incidence coincides with place of figure. The maximum number of time the ray undergoes reflections (including the first one ) before it emerges out is
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 18, 2014
by
meena.p
1
answer
The cross section of glass prism has the form of an isosceles triangle . One of equal face is silvered. A ray of light incident normally on other equal face and after being reflected twice, emerges through base of prism along normal. That the angle of prism is :-
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 14, 2014
by
meena.p
1
answer
A person looks in to a spherical mirror . The size of image of his face is twice the actual size of his face. If the face is at distance 20 cm then find the radius of curvature of mirror.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 11, 2014
by
meena.p
2
answers
An extended objected is placed perpendicular to principal axis of a concave mirror of radius of curvature 20 cm at a distance of 15 cm from pole. Find the lateral magnification produced
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 11, 2014
by
meena.p
1
answer
If a luminous point is moving at a speed $V_0$ towards spherical mirror of focal length f along its axis, Find the speed of image.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
difficult
asked
Feb 11, 2014
by
meena.p
1
answer
A thin rod of length $\large\frac{f}{3}$ is placed along optical axis a concave mirror of focal length f such that its image which is real and elongated just touches rod . calculate the magnification.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
difficult
asked
Feb 11, 2014
by
meena.p
1
answer
An object of length $2.5\;cm$ is placed at a $1.5\; f$ from a concave mirror where f is magnitude of focal length of mirror. The length of object is perpendicular to principal axis . Then which of following will be correct . (i) image is 5 cm long (ii) image is 10 cm long (iii) image is inverted (iv)image is erect
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 11, 2014
by
meena.p
1
answer
The velocity of image will be :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 11, 2014
by
meena.p
1
answer
Where should an object be placed in from of a concave mirror of focal length 30 cm so that the image size is 5 times the object size?
jeemain
physics
class12
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 11, 2014
by
meena.p
1
answer
An object moves with 5 m/s towards right while mirror moves with 1 m/s towards the left as shown. Find velocity of image.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Two plane mirrors are inclined to each other such that a ray of light incident on first mirror and parallel to second is reflected from second mirror parallel to first mirror. Find angle between two mirrors.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 11, 2014
by
meena.p
1
answer
There is a point object and a plane mirror . If the mirror is moved by 10 cm away from object , find distance which the image will move by
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 10, 2014
by
meena.p
1
answer
A Point source of light B is placed at a distance L in front of centre of a mirror of width d hung vertically on a wall. A man walks in front of the mirror along a line parallel to mirror at a distance 2L from it as shown. Find greatest distance over which he can see the image of light source in mirror.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 10, 2014
by
meena.p
1
answer
Minimum size of plane mirror, required to see full image of an observer is :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 10, 2014
by
meena.p
2
answers
Find region on Y axis in which reflected rays are present object is at A(2,0) and MN is a plane mirror as shown:
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 10, 2014
by
meena.p
1
answer
The image of object A in mirror MN will be
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 10, 2014
by
meena.p
1
answer
A person carrying a plane mirror facing his back is moving with a speed of V m/s. Another person is following the mirror at the speed of u m/s. What is the speed of approach of the person to the image in the mirrors.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 20, 2014
by
meena.p
1
answer
Two plane mirrors A and B are alligned parallel to each other as shown. A ray of light is incident at an angle $30^{\circ}$ at a point just inside on one end of mirror A. What is the maximum number of reflection the ray undergoes before it emerges out.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
aims-12-physics
asked
Jan 20, 2014
by
meena.p
1
answer
For a concave mirror as u (object distance ) varies v (the image distance ) also varies. The graph between $\large\frac{1}{u}$ and $\large\frac{1}{v}$
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 20, 2014
by
meena.p
1
answer
An erect image is seen of $\large\frac{1}{5} $ th the height of the object kept at a distance of $20 \;cm$ from a mirror. The mirror must be :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 17, 2014
by
meena.p
1
answer
Two mirrors an inclined to each other at an angle $\theta$ It produces 5 images for a given object . Then,
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 17, 2014
by
meena.p
1
answer
A mirror of width 'l' m is kept on a wall. A person is approaching the mirror from the front. An observer is behind a screen has a view of the mirror as shown. How far from the mirror will be person be when the observer will be able to see him in the mirror.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Jan 17, 2014
by
meena.p
1
answer
Two mirror one concave of radius of curvature $0.4\;m$ and another convex mirror of radius of curvature $0.2 \;m$ are kept facing each other which are $0.5\;m$ apart. An object is placed between two mirrors, $0.25\;m$ from concave mirror. Where is the image formed after two reflections.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Jan 17, 2014
by
meena.p
1
answer
An object is placed in front of a concave mirror of focal length f. A virtual image of magnification 2 is formed.How for must the object be moved from original position so that a real image of same size is formed.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Jan 16, 2014
by
meena.p
1
answer
Position of object (u) reflected from concave varies from $0$ to $\infty$ which of the graph represents the variation of object distance (v) with respect to (u)
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 16, 2014
by
meena.p
1
answer
Image formed by a concave mirror of is three times of the object Focal length of the mirror is 6 cm. Then the object distance is
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 16, 2014
by
meena.p
1
answer
An object of length 3 cm is placed on the principle axis of a concave mirror of focal length f at a distance of 4f. The length of the image will be :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 16, 2014
by
meena.p
1
answer
A concave mirror of focal length f(in air) is immerssed in water $(\mu =\large\frac{4}{3} ) $. The focal length of mirror in water will be
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
Which one of the following statement is true.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
Two plane mirrors are inclined to each other at some angle. A ray of light incident at $30^{\circ}$ on one mirror after reflection from the other mirror retracts its path. The angle between the mirror is :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
A ray of light is reflected by two plane mirror mutually at right angles to each other. What is the deviation of reflected ray from the incident ray
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
A ray of light is incident at an angle of $20^{\circ}$ to the normal. What is the deviation caused due to reflection?
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
A man is walking towards the plane mirror at the speed of $4 km/hr$ . What is the speed with which he is approaching his image?
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
Two plane mirrors are inclined to each other in such a way that a ray of light moving parallel to one mirror comes out parallel to the other mirror after two reflections. The angle between the mirrors is :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
A ray of light is incident at $30^{\circ} $ on the plane mirror. What is the angle between mirror and reflected ray ?
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Jan 15, 2014
by
meena.p
1
answer
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