Ray Optics [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 7 of 160

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Question 1

Question MCQ▾

The plane surface of a Plano-convex lens is silvered If radius of curved surface is R and refractive index is µ, then the system behaves like a concave mirror whose radius will be,

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 2

Question MCQ▾

A glass prism is dipped in water as shown in figure. A light ray is incident normally on the surface AB. It reaches the surface BC after T. I. R

Glass Prism Dipped in Water

Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

Edit

Question 3

Question MCQ▾

An object of length 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm. The nature and size of the image are,

Choices

Choice (4)Response

a.

Virtual, erect, 0.5 cm

b.

Real, inverted, 2.0 cm

c.

Real, inverted, 1.0 cm

d.

Virtual, erect, 1.0 cm

Edit

Passage

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

Finding a Water in Given Figure

A cylindrical tube filled with water is closed at its both ends by two silvered Plano convex lenses as shown in the figure. Refractive index of lenses L1 and L2 are 2.0 and 1.5 while their radii of curvature are 5 cm and 9 cm respectively. A point object is placed somewhere at a point O on the axis of cylindrical tube. It is found that the object and image coincide each other.

Question 4 (1 of 3 Based on Passage)

Question MCQ▾

The position of object w. r. t lens L1 is

Choices

Choice (4)Response

a.

12 cm

b.

8 cm

c.

10 cm

d.

14 cm

Edit

Question 5 (2 of 3 Based on Passage)

Question MCQ▾

The position of object w. r. t lens L2 is

Choices

Choice (4)Response

a.

10 cm

b.

14 cm

c.

8 cm

d.

12 cm

Edit

Question 6 (3 of 3 Based on Passage)

Question MCQ▾

The length of the cylindrical tube is

Choices

Choice (4)Response

a.

18 cm

b.

16 cm

c.

20 cm

d.

22 cm

Edit

Question 7

Question MCQ▾

A crown glass prism of angle 5° is to be combined with a flint glass prism in such a way that the mean ray passes undeviated. Find the angle of the flint glass prism needed and the angular dispersion produced by the combination when white light goes through it. Refractive indices for red, yellow and violet light are 1.514,1.517 and 1.523 respectively for crown glass and 1.613,1.620 and 1.632 for flint glass.

Choices

Choice (4)Response

a.

4.4°, 0.0218°

b.

4.2°, 0.0348°

c.

1.2°, 0.0348°

d.

4.2°, 0.0138°

Edit