Classical Mechanics - MCQs for CSIR NET Physics

This article contains a quiz with 8 MCQs from Physics chapter "Mathematical Physics". 

• Total Marks = 32
• Correct Answer = +4 Marks
• Incorrect Answer = -1 Marks

Classical Mechanics - Physics Practice Test 1

Question 1.

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Question 2.

In planar co-ordinates, an object’s position at time is given as (r, θ) = (e' m, √8t rad). The magnitude of its acceleration in m/s² at t = 0 (to the nearest integer) is

(1) 9 m/sec²

(2) 18 m/sec²

(3) 27 m/sec²

(4) 18 m/sec²

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Question 3.

A particle is moving in a plane with a constant radial velocity of 12 m/s and constant angular velocity of 2 rad/s. When the particle is at a distance r = 8m from the origin, the magnitude of the instantaneous velocity of the particle in m/s is

(1) 8√15

(2) 20

(3) 2√37

(4) 10

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Question 4.

After being hit, a golf ball reaches a maximum height of 60m with a speed of 20 m/s. Right after being hit, the speed of the ball is (take g as 10m/s²)

(1) 10 m/s

(2) 80 m/s

(3) 60 m/s

(4) 40 m/s

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Question 5.

A projectile is fired from the origin O at an angle of 45° from the horizontal. At the highest point P of its trajectory the radial and transverse components of its acceleration in terms of the gravitational acceleration g are

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Question 6.

Given that the co-ordinate of a particle are y(t) = A cos (2ωt) and x(t) = sin (ωt), the trajectory of the particle is a

(1) Circle 

(2) ellipse

(3) hyperbola 

(4) parabola

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Question 7.

The trajectory of a particle of mass m is described in the cylindrical polar coordinates by z=0, Φ=ω and r(t) = r_osinh(ωt), where ω and r_o are constant. The radial force is

(1) mr_o²ω² sin h(ωt)

(2) mr_oω² sin h(ωt)

(3) mr_oω² cos h(ωt)

(4) 0

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Question 8.

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Answer Key

1-(3), 2-(1), 3-(2), 4-(4), 5-(4), 6-(4), 7-(4), 8-(1),

For further questions queries or suggestions, please leave your comments below.