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A spherical ball is dropped in a long column of a viscous liqu
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 solid sphere falls with a terminal velocity of in air. If it is allowed to fall in vacuum
Q2
A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by the graph 
Q3
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
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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
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Solving time: 2 mins

A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by the graph 
Stoke's law

A
A

B
B

C
C

D
D

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Book:

Concepts of Physics (HC Verma Part I)

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A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by the graph 
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Initially, when the ball starts moving, its velocity is small. Gradually, the velocity of the ball increases due to acceleration caused by gravity. However, as the velocity increases, the viscous force acting on the ball also increases. This force tends to decelerate the ball. Therefore, after reaching a certain maximum velocity, the ball slows down. 
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Practice questions from Concepts of Physics (HC Verma Part I)

Question 1
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If two soap bubbles of different radii are connected by a tube,
  1. Air flows from bigger bubble to the smaller bubble till the sizes become equal
  2. Air flows from bigger bubble to the smaller bubble till the sizes are interchanged
  3. Air flows from the smaller bubble to the bigger
  4. There is no flow of air.
Topic

Topic:

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Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 2
Medium
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A capillary tube of radius is dipped vertically in a pot of water. Find the difference between the pressure of the water in the tube below the surface and the atmospheric pressure. Surface tension of water .
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Topic:

Mechanical Properties of Solids

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Book:

Concepts of Physics (HC Verma Part I)

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Question 3
Easy
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The two wires shown in figure are made of same material which has a breaking stress of The area of cross section of the upper wire is and that of the lower wire is . The mass and the hanger is light.
(a) Find the maximum load that can be put on the hanger without breaking a wire. Which wire will break first if the load is increased ?
(b) Repeat the above part if and .
Topic

Topic:

Mechanical Properties of Solids

Book

Book:

Concepts of Physics (HC Verma Part I)

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Question 4
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Frictional force between solids operates even when they do not move with respect to each other. Do we have viscous force acting between two layers even if there is no relative motion?
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Topic:

Mechanical Properties of Solids

Book

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Concepts of Physics (HC Verma Part I)

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Question 2
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Young's modulus of the material of a wire is On pulling the wire by a force , the increase in its length is . The potential energy of the stretched wire is
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Practice questions on similar concepts asked by Filo students

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A machine carries a 4.0 kg package from an initial position of d → i = (0.50 m) i ^ + (0.75 m) j ^ + (0.20 m) k ^ at t = 0 to a final position of d → f = (7.50 m) i ^ + (12.0 m) j ^ + (7.20 m) k at t = 12 s . The constant force applied by the machine on the package is F → = (2.00 N) i ^ + (4.00 N) j ^ + (6.00 N) k ^ . For that displacement, find (a) the work done on the package by the machine’s force and(b) the average power of the machine’s force on the package.
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A particle of mass strikes the floor. Its position versus time graph is shown in figure. The impulse on floor at will be [All physical quantities are shown in SI system of un'ts]
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To prove it consider a liquid flowing steadily through a tube of non-uniform area of cross-section as shown in fig. If and are the pressures at the two ends of the tube respectively, work done in pushing the volume of incompressible fluid from point to through the tube will be ......(i) This work is used by the fluid in two ways. (i) In changing the potential energy of mass (in the volume ) from to i.e., (ii) In changing the kinetic energy from to , i.e., Now as the fluid is non-viscous, by conservation of mechanical energy i.e., or As or or constant This equation is called Bernoulli's equation and represents conservation of mechanical energy in case of moving fluids. (i) Bernoulli's theorem for unit mass of liquid flowing through a pipe can also be written as:
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Question Text
A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by the graph 
TopicMechanical Properties of Solids
SubjectPhysics
ClassClass 11
Answer TypeText solution:1
Upvotes54