Q # 1. Name the two characteristics of simple harmonic
motion?
Ans. The
characteristics of SHM are
Acceleration of the
body is directly proportional to the displacement and is always
directed towards mean position:\[a \propto - \ x\]
Total energy of the
particle executing SHM remains conserve.
Q # 2.Does frequency depend on the...
Exercise Short Questions of Fluid Dynamics, Chapter 6 of 1st Year Physics
April 30, 2023
1st Year Physics, Exercise Short Questions, Fluid Dynamics
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Q # 1. Explain what do you know about the term `Viscosity'?
Ans. The term viscosity is used for the degree of internal friction in the fluid. This internal friction is
associated with the resistance between two adjacent layers of the fluid
moving relative to each other. It is denoted by the Greek word
\(\eta\).
Q # 2. What is meant by drag...
Exercise Short Question of Vectors and Equilibrium, Chapter 2 of 1st Year Physics
April 30, 2023
1st Year Physics, Exercise Short Questions, Vectors and Equilibrium
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Q # 1. Define the terms (i) Unit Vector (ii) Position Vector (iii) Component of a Vector.Unit VectorA vector having the unit magnitude is called the unit vector. It is used to indicate the direction of any vector. The unit vector in the direction of vector A is expressed as:\[\widehat{A} = \frac{\mathbf{A}}{|A|}\]where\(\widehat{A}\) is the unit vector...
Exercise Short Questions of Thermodynamics, Chapter 11 of 1st Year Physics
April 29, 2023
1st Year Physics, Exercise Short Questions, Thermodynamics
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Q # 1.Why is the average velocity
of the molecules in a gas zero but the average of the square of velocities is
not zero?
Ans.
The molecules of a gas are always in a random motion. The number of molecules
moving in a certain direction are...
Exercise Short Questions of Circular Motion, Chapter 5 of 1st Year Physics
April 24, 2023
1st Year Physics, Circular Motion, Exercise Short Questions
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Q # 1. Explain the difference
between tangential velocity and the angular velocity. If one of these is given
for a wheel of known radius, how will you find the other?
Ans.
Tangential velocity is the linear velocity of a particle moving along a curve
or circle. As the direction of the linear velocity is always along the tangent
to the circle, that...
Exercise Short Questions of Work and Energy, Chapter 4 of 1st Year Physics
April 22, 2023
1st Year Physics, Exercise Short Questions, Work and Energy
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Q # 1. A person holds a bag of groceries while standing still, talking to a friend. A car is stationary with the engine running. From the stand point of work, how are these two situations similar?Ans. In both the above two cases, since there is no displacement, therefore the work done will be zero. Hence in this respect, the two situations are similar.Q...
Exercise Short Questions of Motion and Force, Chapter 3 of 1st Year Physics
April 22, 2023
1st Year Physics, Exercise Short Questions, Motion and Force
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Q # 1. What is the difference between uniform and variable velocity? From the explanation of variable velocity, define acceleration. Give the SI unit of velocity and acceleration.Uniform Velocity: A body is said to have a uniform velocity if it covers equal displacement in equal intervals of time.Variable Velocity: A body is said to have a variable...
Exercise Short Question of Measurement, Chapter 1 of 1st Year Physics
April 21, 2023
1st Year Physics, Exercise Short Questions, Measurements
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Q # 1. Name several repetitive phenomenon occurring in nature which can serve as reasonable time standards. Ans. Any natural phenomenon that repeats itself after exactly same time interval can be used as time standard. The following natural phenomenon can be used as time standard. The rotation of earth around the sun and about its own...