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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:
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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

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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
Timing Icon

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

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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A liquid is contained in a vertical tube of semicircular cross section. The contact angle is zero. The force of surface tension on the curved part and on the flat part are in ratio
  1. 1:1
  2. 1:2
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 2
Easy
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If a compressed spring is dissolved in acid, what happened to the elastic potential energy of the spring?
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 3
Hard
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Views: 5,509

A capillary tube of radius 1 mm is kept vertical with the lower end in water.
(a) Find the height of water raised in the capillary.
(b) If the length of the capillary tube is half the answer of part , find the angle θ made by the water surface in the capillary with the wall.
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 4
Medium
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A steel plate of face area and thickness is fixed rigidly at the lower surface. A tangential force of is applied on the upper surface. Find the lateral displacement of the upper surface with respect to the lower surface. Rigidity modulus of steel .
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Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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(b) equal strains on both wires.
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A rod of length l and radius r is joined to a rod of length l/2 and radius r/2 of same material. The free end of small rod is fixed to a rigid base and the free end of larger rod is given a twist of , the twist angle at the joint will be :
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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