12th Std Physics One Mark Questions. We covered all the 12th Std Physics One Mark Questions in this post for free so that you can practice well for the exam.
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Mock Test on 12th Std Physics for Students
Which of the following has the smallest moment of inertia about the central axis if all have equal mass and radii
(A) Ring
(B) Disc
(C) Spherical shell
(D) Solid sphere
Option b – Disc
When the same torque acts on two rotating rigid bodies to stop them, which have the same angular momentum
(A) the Body with a greater moment of inertia stops first
(B) the Body with a smaller moment of inertia stops first
(C) Both bodies will be stopped after the same time
(D) We cannot predict which stops first
Option a – the Body with a greater moment of inertia stops first
In rotational motion, a moment of inertia :
(A) Imparts angular acceleration
(B) Opposes the change in rotational motion
(C) Imparts torque
(D) Increases the speed of rotation
Option b – Opposes the change in rotational motion
Spokes are used in a cycle wheel :
(A) To increase the strength of the wheel
(B) To increase the moment of inertia of the wheel
(C) To give better shape to the wheel
(D) To decorate the cycle
Option b – To increase the moment of inertia of the wheel
The mass of the flywheel is concentrated on its rim this is done to :
(A) To increase the moment of inertia
(B) To decrease the moment of inertia
(C) To obtain a stable equilibrium
(D) To obtain a strong wheel
Option a – To increase the moment of inertia
The moment of inertia of a rigid body does not depend upon its
(A) Mass
(B) Distribution of mass about the axis
(C) Angular velocity of the body
(D) Shape of the body
Option c – Angular velocity of the body
The moment of inertia in rotatory motion is comparable to this quantity in translatory motion
(A) Momentum
(B) Mass
(C) Weight
(D) Velocity
Option b – Mass
Which of the following bodies having the same mass and same radius has the largest moment of inertia?
(A) Ring about its axis perpendicular to its plane
(B) Disc about its axis perpendicular to its plane
(C) Solid sphere
(D) Bar magnet
Option a – Ring about its axis perpendicular to its plane
The moment of inertia of a body does not depend on
(A) The mass of the body
(B) The angular velocity of the body
(C) The axis of rotation of the body
(D) The distribution of the mass in the body.
Option b – The angular velocity of the body
If the position of the axis of rotation of a body is changed, which of the following physical quantities will not change?
(A) The radius of gyration
(B) Moment of inertia
(C) Distribution of mass
(D) Mass
Option d – Mass
A hollow cylinder and a solid cylinder of the same mass and radius are made to roll down on an inclined plane. Which one reaches the bottom first?
(A) The solid cylinder
(B) The hollow cylinder
(C) Both together
(D) The one with a higher density of the material
Option a – The solid cylinder
A solid sphere, disc, and solid cylinder all of the same mass and made up of the same material are allowed to roll down from rest on an inclined plane :
(A) Solid sphere reaches the bottom first
(B) Disc reaches the bottom first
(C) Solid cylinder reaches the bottom first
(D) All reach simultaneously
Option a – Solid sphere reaches the bottom first
We covered all the 12th std physics one mark questions above in this post for free so that you can practice well for the exam.
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