Ray Optics-Reflection and Refraction of Light (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 5 of 30

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Passage

Read the passage given below and answer the questions that follow:

In both mirror - at 20 cm distance from mirror M1

In Both Mirror - at 20 Cm Distance from Mirror M1

In figure a plane mirror placed on X- axis. And angle between mirror M1 and X-axis is 450. A concave mirror (M2) is placed at 20 cm distance from mirror M1.

A plane mirror (M 1) and a concave mirror (M 2) of focal length 10 cm are arranged as shown in figure. An object is kept at origin. Answer the following questions. (Consider image formed by single reflection in all cases)

Question number: 1 (1 of 2 Based on Passage) Show Passage

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

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MCQ▾

Question

The co-ordinates of image formed by plane mirror are

Choices

Choice (4) Response

a.

(-20 cm, 0)

b.

(10 cm, - 60 cm)

c.

(10 cm, -10 cm)

d.

(10 cm, 10 cm)

Question number: 2 (2 of 2 Based on Passage) Show Passage

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

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MCQ▾

Question

The co-ordinates of image formed by concave mirror are

Choices

Choice (4) Response

a.

(10 cm, -40 cm)

b.

(10 cm, 8 cm)

c.

(10 cm, - 60 cm)

d.

None of the above

Question number: 3

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

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Assertion-Reason▾

Question

Assertion (Ꭺ)

The mirrors used in search lights are parabolic and not concave spherical.

Reason (Ꭱ)

In a concave spherical mirror the image formed is always virtual.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 4

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

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MCQ▾

Question

Two mirrors are inclined at an angle of 50°. Then what is the number of images formed for an object placed in between the mirrors?

Choices

Choice (4) Response

a.

6

b.

1

c.

3

d.

7

Question number: 5

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

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MCQ▾

Question

Two plane mirrors are inclined at an angle θ. A ray of light is incident on one mirror at an angle of incidence i. The ray is reflected from this mirror, falls on the second mirror from where it is reflected parallel to the first mirror. What is the value of i, the angle of incidence in terms θ?

Choices

Choice (4) Response

a.

θ - 90°

b.

2θ - 90°

c.

4θ - 90°

d.

3θ - 90°

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