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Physics-

General

Easy

Question

A vertical light ray strikes a plane mirror kept inclined at an angle of 45° to the horizontal. The reflected ray is horizontal as shown in fig. A glass prism with refracting angle 6° is placed in the path of the reflected ray. In what way and by how much should the mirror be rotated, if the total deviation of the light ray is to be 90° ?

${1.5}^{\circ}$ , anti clockwise, $3^{\circ}$
$0.5 .$ anti clock wise, $2^{\circ}$
$1^{0}$ , clock wise, $5^{0}$
$7^{0}$ , clock wise, $1^{0}$

The correct answer is: $1.5 to the power of ring operator end exponent$ , anti clockwise, $3 to the power of ring operator end exponent$

Related Questions to study

A fixed cylindrical tank of height H=4 m and area $A$ , is filled up with a liquid. An observer through a telescope fitted at the top of the wall of the tank and inclined at $theta equals 45 to the power of ring operator end exponent$ with the vertical. When the tank is completely filled with liquid, he notices an insect, which is at the centre of the bottom of the tank. At t=0, he opens a cork of area a at the bottom of the tank. The insect moves in such a way that it is visible for a certain time. Find the refractive indexof the liquid

A fixed cylindrical tank of height H=4 m and area $A$ , is filled up with a liquid. An observer through a telescope fitted at the top of the wall of the tank and inclined at $theta equals 45 to the power of ring operator end exponent$ with the vertical. When the tank is completely filled with liquid, he notices an insect, which is at the centre of the bottom of the tank. At t=0, he opens a cork of area a at the bottom of the tank. The insect moves in such a way that it is visible for a certain time. Find the refractive indexof the liquid

physics-General

A medium (M) having refractive index 2 is placed in air. Its pole is at origin. A point object at (-10 cm,0) starts moving towards the surface with velocity $4 square root of 2 text end text m s to the power of negative 1 end exponent$ at 45° with principal axis. [R=20 cm]

Velocity of image along ' $x$ ' direction is ___________ ms^–1

A medium (M) having refractive index 2 is placed in air. Its pole is at origin. A point object at (-10 cm,0) starts moving towards the surface with velocity $4 square root of 2 text end text m s to the power of negative 1 end exponent$ at 45° with principal axis. [R=20 cm]

Velocity of image along ' $x$ ' direction is ___________ ms^–1

physics-General

The time required for the light to go from A to B, when a ray of light goes from point A in a medium where the speed of light is $v subscript 1 end subscript$ to a point $B$ in a medium where the speed of light is $v subscript 2 end subscript$ as shown in figure, is:

The time required for the light to go from A to B, when a ray of light goes from point A in a medium where the speed of light is $v subscript 1 end subscript$ to a point $B$ in a medium where the speed of light is $v subscript 2 end subscript$ as shown in figure, is:

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It is found that electromagnetic signals sent inside glass sphere from A towards B reach point C. The speed of electromagnetic signals in glass cannot be:

It is found that electromagnetic signals sent inside glass sphere from A towards B reach point C. The speed of electromagnetic signals in glass cannot be:

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In the figure ABC is the cross section of a right angled prism and BCDE is the cross section of a glass slab. The value of $theta$ so that light incident normally on the face AB does not cross the face BC is (given $open s i n to the power of negative 1 end exponent invisible function application left parenthesis 3 divided by 5 right parenthesis equals 37 to the power of ring operator end exponent close parentheses$

In the figure ABC is the cross section of a right angled prism and BCDE is the cross section of a glass slab. The value of $theta$ so that light incident normally on the face AB does not cross the face BC is (given $open s i n to the power of negative 1 end exponent invisible function application left parenthesis 3 divided by 5 right parenthesis equals 37 to the power of ring operator end exponent close parentheses$

physics-General

An object is placed in front of a convex mirror at a distance of 50 cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no parallax between the images formed by the two mirrors. What is the radius of curvature of the convex mirror?

An object is placed in front of a convex mirror at a distance of 50 cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no parallax between the images formed by the two mirrors. What is the radius of curvature of the convex mirror?

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A long rectangular slab of transparent medium of thickness 'd' placed such a table with its length parallel to the x-axis and width parallel to the y-axis. A ray of light travelling in air makes a near normal
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The $x$ -coordinate of the point A where the ray intersects the upper surface of the slab air boundary is

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The $x$ -coordinate of the point A where the ray intersects the upper surface of the slab air boundary is

physics-General

A point source S is placed midway between two converging mirrors having equal focal length as shown in figure. Find the values of d for which only one image is formed.

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physics-General

A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image.

A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image.

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A convex mirror of focal length 10an is shown in the figure. A linear object AB=5 cm is placed along the optic axis. Point $A$ is at a distance of 25 cm from the pole of mirror. The length of image of AB is

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.Two bodies A and B are moving towards a plane mirror with speeds $V subscript A end subscript$ and $V subscript B end subscript$ respectively as shown in fig. The speed of image of A respect to the body B is

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A point object is moving with a speed v before an arrangement of two mirrors as shown in figure. The magnitude of velocity of image in mirror $M subscript 1 end subscript$ with respected to image in mirror $M subscript 2 end subscript$ is

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A point source of light ' S ' at a distance $d$ from the screen A produces light intensity I₀ at the centre of the screen. If a completely reflecting mirror M is placed at a distance $d$ behind the source as shown in the figure, treating object and its image as incoherent with each other, find the intensity at the centre of the screen.

A point source of light ' S ' at a distance $d$ from the screen A produces light intensity I₀ at the centre of the screen. If a completely reflecting mirror M is placed at a distance $d$ behind the source as shown in the figure, treating object and its image as incoherent with each other, find the intensity at the centre of the screen.

physics-General

A point source of light S is placed in front of two large mirrors as shown. Which of the following observers will see only one image of S?

A point source of light S is placed in front of two large mirrors as shown. Which of the following observers will see only one image of S?

physics-General

parallel

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