NEET Physics: Questions 1114 - 1117 of 2098

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Question number: 1114

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

MCQ▾

Question

The plane of a mirror makes an angle of 30° with horizontal. If a vertical ray is incident on a mirror, then what is the angle between mirror and reflected ray?

Choices

Choice (4) Response

a.

90°

b.

60°

c.

30°

d.

45°

Question number: 1115

» Ray Optics » Snell's Law

MCQ▾

Question

Light of wavelength 6000 Å enters from air into water (a medium of refractive index 4/3). Find the speed and wavelength [c = 3 × 10 8 m/s]

Choices

Choice (4) Response

a.

3.15 × 10 8 m/s, 3500A

b.

2.25 × 10 8 m/s, 4500A

c.

1.25 × 10 8 m/s, 2500A

d.

3.45 × 10 8 m/s, 5500A

Question number: 1116

» Ray Optics » Deviation and Dispersion of Light by a Prism

Assertion-Reason▾

Assertion (Ꭺ)

There is no dispersion of light refracted through a rectangular glass slab.

Reason (Ꭱ)

Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colors.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 1117

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

MCQ▾

Question

The light reflected by a plane mirror will not form a real image

(1) If the rays incident on the mirror are diverging

(2) Under no circumstances

(3) If the object is real

(4) If the rays incident on the mirror are converging

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1, 2 and 3 are correct

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