Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror] Column 1 Column 2 (A) m = - 2 (a) Convex mirror (B) m = - 1 2 (b) Concave mirror (C) m = + 2 (c) Real image (D) m = + 1 2 (d) Virtual image

A → b and c; B → b and c; C → b and d; D → a and d

A → a and c; B → a and d; C → a and b; D → c and d

A → a and d; B → b and c; C → b and d; D → b and c

A → c and d; B → b and d; C → b and c; D → a and d

EASY

Earn 100

What are conjugate foci for a spherical mirror?

Important Questions on Reflection of Light

EASY

Physics>Optics>Reflection of Light>Mirror Equation

A concave mirror of focal length

15 cm

, forms an image having twice the linear dimensions of the object. The position of the object, when the image is virtual, will be

EASY

Physics>Optics>Reflection of Light>Mirror Equation

An object is placed at a distance of

20 cm

from the pole of a concave mirror of focal length

10 cm

. The distance of the image formed is

EASY

Physics>Optics>Reflection of Light>Mirror Equation

An object of height

2.5 cm

is placed perpendicularly on the principal axis of a concave mirror of focal length

f

at a distance of

\frac{3}{4} f

What will be the nature of the image of the object and its height

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

For a concave mirror of focal length

10 cm

to form twice magnified image, distance of object from its pole is/are

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror]

	Column 1		Column 2
(A)	$m = - 2$	(a)	Convex mirror
(B)	$m = - \frac{1}{2}$	(b)	Concave mirror
(C)	$m = + 2$	(c)	Real image
(D)	$m = + \frac{1}{2}$	(d)	Virtual image

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

A point object is moving uniformly towards the pole of a concave mirror of focal length $25 cm$ along its axis as shown below. The speed of the object is $1 {ms}^{- 1}$ . At $t = 0$ , the distance of the object from the mirror is $50 cm$ . The average velocity of the image formed by the mirror between time $t = 0$ and $t = 0.25 s$ is:

Question Image

HARD

Physics>Optics>Reflection of Light>Mirror Equation

A candle placed

25 cm

from a lens forms an image on the screen placed

75 cm

on the other side of the lens. The focal length and type of the lens should be

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

To find the focal length of a convex mirror, a student records the following data:

Object pin	Convex Lens	Convex Mirror	Image Pin
22.2 cm	32.2 cm	45.8 cm	71.2 cm

The focal length of the convex lens is

f_{1}

and that of mirror is

f_{2}

. Then taking index correction to be negligibly small,

f_{1}

and

f_{2}

are close to:

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

The magnification produced by a spherical mirror and a spherical lens is

+ 0.8 .

Then:

EASY

Physics>Optics>Reflection of Light>Mirror Equation

Draw a ray diagram for the image formed by a concave mirror when the object is placed between pole and focus and write the conclusion.

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

What is linear magnification? Obtain expressions for the linear magnification of the image formed by a spherical mirror.

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

How far (in

cm

) should an object be held from a concave mirror of focal length

40 cm

so as to obtain a virtual image twice the size of the object?

HARD

Physics>Optics>Reflection of Light>Mirror Equation

In an experiment to determine the focal length

f

of a concave mirror by the

u - υ

method, a student places the object pin

A

on the principal axis at a distance

x

from the pole

P

. The student looks at the pin and its inverted image from a distance keeping his/her eye in line with

PA

. When the student shifts his/her eye towards left, the image appears to the right of the object pin. Then

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

Represent the union of two sets by Venn diagram for each of the following.

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

HARD

Physics>Optics>Reflection of Light>Mirror Equation

In an experiment to determine the focal length (

f

) of a concave mirror by the

u - v

pin method, a student places the object pin

A

on the principal axis at a distance

x

from the pole

P

. The student looks at the pin and its inverted image from a distance keeping his/her eye in line with

P A

. When the student shifts his/her eye towards left, the image appears to the right of the object pin. Then:

HARD

Physics>Optics>Reflection of Light>Mirror Equation

The magnification for a mirror is

- 2

. How are

u

and

v

related?

MEDIUM

Physics>Optics>Reflection of Light>Mirror Equation

A concave mirror gives an image three times as large as the object placed at a distance of

20 cm

from it. For the image to be real, the focal length should be

EASY

Physics>Optics>Reflection of Light>Mirror Equation

I

is the image of a point object

O

formed by spherical mirror, then which of the following statement is incorrect

EASY

Physics>Optics>Reflection of Light>Mirror Equation

A student performed the experiment of determination of focal length of a concave mirror by

u - v

method using an optical bench of length 1.5 m. The focal length of the mirror used is 24 cm. The maximum error in the location of the image can be 0.2 cm. The 5 sets of

(u, v)

values recorded by the student (in cm) are : (42, 56), (48, 48), (60, 40), (66, 33), (78, 39). The data set(s) that cannot come from experiment and is (are) incorrectly recorded, is (are)

HARD

Physics>Optics>Reflection of Light>Mirror Equation

A point object is placed on the principal axis of a concave mirror, at a distance of

15 cm

from the pole. The radius of curvature of the mirror is

20 cm

and the object is made to oscillate along the principal axis with an amplitude of

2 mm

. The amplitude of its image will be

What are conjugate foci for a spherical mirror?

Important Questions on Reflection of Light

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