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A narrow beam of white light goes through a slab having parall
Concepts of Physics by H. C. Verma
Concepts of Physics

Class 11

HC Verma Part I

Author:
H. C. Verma
Subject:
Physics
1

Chapter 1: Introduction to Physics

35 questions

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2

Chapter 2: Physics and Mathematics

60 questions

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3

Chapter 3: Rest and Motion: Kinematics

88 questions

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4

Chapter 4: The Forces

33 questions

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5

Chapter 5: Newton's Law of Motion

82 questions

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6

Chapter 6: Friction

57 questions

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7

Chapter 7: Circular Motion

63 questions

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8

Chapter 8: Work and Energy

101 questions

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9

Chapter 9: Centre of Mass, Linear momentum Collision

119 questions

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10

Chapter 10: Rotational Mechanics

149 questions

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11

Chapter 11: Gravitation

80 questions

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12

Chapter 12: Simple Harmonic Motion

111 questions

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13

Chapter 13: Fluid Mechanics

81 questions

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14

Chapter 14: Some Mechanical Properties of Matter

87 questions

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15

Chapter 15: Wave Motion and Waves on a String

96 questions

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16

Chapter 16: Sound Waves

118 questions

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17

Chapter 17: Light Waves

79 questions

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18

Chapter 18: Geometrical optics

123 questions

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19

Chapter 19: Optical Instruments

52 questions

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20

Chapter 20: Dispersion and Spectra

27 questions

Q1
The focal length of a converging lens are and for violet and red light respectively.
Q2
A narrow beam of white light goes through a slab having parallel faces.
Q3
By properly combining two prisms made of different materials, it is possible to:
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21

Chapter 21: Speed of Light

14 questions

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22

Chapter 22: Photometry

38 questions

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Question
Medium
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Solving time: 2 mins

A narrow beam of white light goes through a slab having parallel faces.

SELECT MULTIPLE OPTION

A
The light never splits in different colours

B
The emergent beam is white

C
The light inside the slab is split into different colours

D
The light inside the slab is white

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Book:

Concepts of Physics (HC Verma Part I)

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Text SolutionText solutionverified iconVerified

(b) The emergent beam is white.
(c) The light inside the slab is split into different colours.

White light will split into different colours inside the glass slab because the value of refractive index is different for different wavelengths of light; thus, they suffer different deviations. But the emergent light will be white light. As the faces of the glass slide are parallel, the emerging lights of different wavelengths will reunite after refraction.
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Practice questions from Concepts of Physics (HC Verma Part I)

Question 1
Medium
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A photographic plate is placed directly in front of a small diffused source in the shape of a circular disc. It takes 12s to get a good exposure. If the source is rotated by 60° about one of its diameter, the time needed to get the same exposure will be ___________ .
  1. 6 s
  2. 12 s
  3. 24 s
  4. 48 s
Topic

Topic:

Ray Optics and Optical Instruments

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 2
Medium
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A source emits light of wavelengths 555 nm and 600 nm. The radiant flux of the 555 nm part is 40 W and of the 600 nm part is 30 W. The relative luminosity at 600 nm is 0.6. Find (a) the total radiant flux, (b) the total luminous flux, (c) the luminous efficiency.
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Topic:

Ray Optics and Optical Instruments

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Book:

Concepts of Physics (HC Verma Part I)

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Question 3
Easy
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What is the luminous flux of a source emitting radio waves?
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Ray Optics and Optical Instruments

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Book:

Concepts of Physics (HC Verma Part I)

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The image formed by a concave mirror
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  3. Is certainly real if the object is virtual
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Topic:

Ray Optics and Optical Instruments

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question Text
A narrow beam of white light goes through a slab having parallel faces.
TopicRay Optics and Optical Instruments
SubjectPhysics
ClassClass 12
Answer TypeText solution:1
Upvotes60