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Gravitation Class 11 NEET Questions. We covered all the Gravitation Class 11 NEET Questions in this post for free so that you can practice well for the exam.
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MCQ on Gravitation for Class 11th Students
A wheel attached to a shaft rotates at 480 rpm. If a similar wheel is fixed to it, what will be the new frequency of rotation?
(A) 1200 rpm
(B) 480 rpm
(C) 300 rpm
(D) 240 rpm
Option d – 240 rpm
A particle is undergoing linear simple harmonic motion with acceleration a and velocity v. If v² is plotted along the Y-axis and a along the X-axis, what form will the graph take?
(A) a straight line
(B) a parabola
(C) an ellipse
(D) an exponential curve
Option c – an ellipse
Three aluminum wires have mass ratios of 2:3:5 and length ratios of 5:3:1. What is the ratio of their resistances?
(A) 125 : 32 : 30
(B) 125 : 30 : 2
(C) 115 : 125 : 65
(D) 65 : 115 : 125
Option b – 125 : 30 : 2
Drift velocity represents the average velocity arising due to which of the following?
(A) thermal energy
(B) presence of an electric field
(C) both thermal energy and electric field
(D) thermal energy, electric field, and gravity
Option b – presence of an electric field
Two particles A and B are in a system such that the center of mass is three times farther from B than from A. To shift the center of mass to the midpoint, what needs to be done?
(A) Add a mass equal to 3m at point B
(B) Add a mass equal to 2m at point B
(C) Add a mass equal to 3m at point A
(D) Add a mass equal to 2m at point A
Option b – Add a mass equal to 2m at point B
The overall resistance in a parallel circuit is lower than that of individual resistors because of:
(A) increased number density of charge carriers
(B) reduced effective length
(C) decreased drift velocity
(D) greater effective cross-sectional area
Option d – greater effective cross-sectional area
Identify the incorrect statement regarding center of mass:
(A) Its position depends on the shape and mass distribution of the object
(B) It may lie outside or inside the object
(C) It is a point with well-defined position, velocity, and acceleration
(D) Symmetrical objects with uniform mass distribution have easily located centers of mass
Option c – It is a point with well-defined position, velocity, and acceleration
A wire is bent in half and twisted along itself. What is the resistance of the new setup compared to the original?
(A) same as before
(B) half of the original
(C) one-fourth of the original
(D) double the original
Option c – one-fourth of the original
A wire with resistance R is modified such that one parameter is changed n times and resistance becomes n² times. Assuming mass remains constant, which parameters are altered?
(A) length is multiplied by n
(B) radius is multiplied by n
(C) cross-sectional area is reduced by n times
(D) both (A) and (C)
Option d – both (A) and (C)
Select the incorrect statement regarding ohmic and non-ohmic resistors:
(A) Ohmic law fails for non-ohmic devices
(B) V = IR is invalid for non-ohmic resistors
(C) Resistance varies for non-ohmic resistors
(D) All statements are valid
Option b – V = IR is invalid for non-ohmic resistors
Assertion: In simple harmonic motion, damping force isn’t constant.
Reason: Damping depends on time.
Choose the correct option:
(A) Both assertion and reason are true; reason correctly explains assertion
(B) Both are true, but the reason does not explain the assertion
(C) Assertion is correct; reason is incorrect
(D) Assertion is incorrect; reason is correct
Option c – Assertion is correct; reason is incorrect
Mobility is classified as which type of quantity?
(A) scalar
(B) vector
(C) constant
(D) both scalar and vector
Option a – scalar
A damped oscillator has a mass of 500 g, spring constant of 70 N/m, and damping constant of 20 g/s. How much time will it take for its amplitude to reduce to half?
(A) 11 s
(B) 23.1 s
(C) 34.6 s
(D) 40.9 s
Option c – 34.6 s
When no external force acts on a particle system:
(A) every individual particle moves at constant speed
(B) particles move in pairs with constant velocity
(C) center of mass moves with no acceleration
(D) center of mass moves with zero velocity
Option c – center of mass moves with no acceleration
When an oscillator’s driving frequency equals its natural frequency, why is the amplitude finite in real-world situations?
(A) Matching driving and natural frequency is impossible
(B) Infinity is just theoretical
(C) Damping is always present in practical systems
(D) Resonance is not achieved with forced oscillations
Option c – Damping is always present in practical systems
A linear graph with a non-zero intercept in a rotating system indicates:
(A) moment of inertia vs. radius of gyration
(B) mass vs. radius of gyration
(C) log of moment of inertia vs. log of radius of gyration
(D) moment of inertia vs. square of radius of gyration
Option c – log of moment of inertia vs. log of radius of gyration
A spring balance of 20 cm scale measuring up to 20 kg shows oscillations with a 0.4 s period. What is the suspended body’s weight?
(A) 1.3 kg
(B) 2.1 kg
(C) 3.97 kg
(D) 5.6 kg
Option c – 3.97 kg
If a flywheel’s mass is mainly near its center, what is the outcome?
(A) it will not reach rotational equilibrium
(B) it won’t rotate at all
(C) it will be hard to maintain uniform speed
(D) its moment of inertia will become infinite
Option c – it will be hard to maintain uniform speed
Which of these is NOT a property of simple harmonic motion?
(A) Maximum acceleration at extreme positions
(B) Projection of uniform circular motion on a diameter
(C) Highest speed at mean position
(D) Velocity-time graph is a straight line
Option d – Velocity-time graph is a straight line
What happens to the internal resistance of a cell when its temperature rises?
(A) stays constant
(B) decreases
(C) increases
(D) increases only for non-ohmic types
Option b – decreases
Angular impulse is defined as:
(A) moment of inertia × angular velocity
(B) moment of inertia × change in angular velocity
(C) moment of inertia × angular acceleration
(D) torque × moment of inertia
Option b – moment of inertia × change in angular velocity
We covered all the gravitation class 11 neet questions above in this post for free so that you can practice well for the exam.
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