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The properties of a surface are different from those of the bu
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

Q1
A student plots a graph from his reading on the determination of Young modulus of a metal wire but forgets to put the labels, the quantities on X and Y-axes may be respectively
Q2
The properties of a surface are different from those of the bulk liquid because the surface molecules
Q3
The rise of a liquid in a capillary tube depends on:
View all question
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

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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
Easy
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Solving time: 2 mins

The properties of a surface are different from those of the bulk liquid because the surface molecules

SELECT MULTIPLE OPTION

A
Are smaller than other molecules

B
Acquire charge due to collision from air molecules

C
Find different type of molecules in their range of influence

D
Feel a net force in one direction.

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Book:

Concepts of Physics (HC Verma Part I)

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Text SolutionText solutionverified iconVerified

The surface molecules acquire air and liquid molecules in their sphere of influence. 
The surface molecules have different magnitudes of forces pulling them from the top and the bulk. So, they are affected by a net finite force in one direction. 
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Practice questions from Concepts of Physics (HC Verma Part I)

Question 1
Easy
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When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary.
  1. The surface tension of the liquid must be zero.
  2. The contact angle must be 90°.
  3. The surface tension may be zero.
  4. The contact angle may be 90°.
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

View 3 solutions

Question 2
Easy
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Views: 5,445

A solid sphere falls with a terminal velocity of in air. If it is allowed to fall in vacuum
  1. Terminal velocity will be
  2. Terminal velocity will be less than
  3. Terminal velocity will be more than
  4. There will be no terminal velocity.
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

View 8 solutions

Question 3
Medium
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Views: 6,092

A steel wire of original length and cross-sectional area is clamped at the two ends so that it lies horizontally and without tension. If a load of is suspended from the middle point of the wire, what would be its vertical depression?
Y of the steel . Take .
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

View 2 solutions

Question 4
Easy
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A heave uniform rod is hanging vertically form a fixed support. It is stretched by its won weight. The diameter of the rod is
  1. Smallest at the top and gradually increases down the rod
  2. Largest at the top and gradually decreases down the rod
  3. Uniform everywhere
  4. Maximum in the middle
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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A wire elongates by when a load is hanged from it. If the wire goes over a pulley and two weights each are hung at the two ends, the elongation of the wire will be (in
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An area of cross-section of rubber string is . Its length is doubled when stretched with a linear force of . The Young's modulus of the rubber in will be
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(1.) A police officer fires a bullet of mass with speed on soft plywood of thickness . The bullet emerges with only of it's kinetic energy. What is total minimum thickness of plank required to complétely stop the bullet?
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Question 4
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Maximum absolute error in the sum or difference of two quantities is equal to sum of absolute error of thes ind vidual quantities. L.. If then and so percentage error in value of is equal to in percentage Two resistances and are connected in series 11. The equivalent resistance of the series combination of and is
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Question Text
The properties of a surface are different from those of the bulk liquid because the surface molecules
TopicMechanical Properties of Solids
SubjectPhysics
ClassClass 11
Answer TypeText solution:1
Upvotes97