NEET Physics: Questions 146 - 150 of 2098

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Question number: 146

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A projectile thrown from a height of 10 m with velocity of √2 m/s, the projectile will fall, from the foot of projection, at distance- (g = 10 m/s 2)

Choices

Choice (4) Response

a.

1 m

b.

3 m

c.

√2 m

d.

2 m

Question number: 147

» Kinematics » Uniformly Accelerated Motion

MCQ▾

Question

The shaft of an electric motor starts from rest and on the application of a torque, it gains an angular acceleration given by a = 3t –t 3 during the first 2 seconds after it starts after which a = 0. The angular velocity after 6 sec will be –

Choices

Choice (4) Response

a.

2 rad/sec

b.

1 rad/sec

c.

3 rad/sec

d.

4 rad/sec

Question number: 148

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A motor car is travelling at 30 m/s on a circular road of radius 500 m. It is increasing its speed at the rate of 2 m/s 2. Its net acceleration is (in m/s 2) –

Choices

Choice (4) Response

a.

0

b.

1.8

c.

2

d.

2.7

Question number: 149

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A ball is thrown from ground level so as to just clear a wall 4 metres high at a distance of 4 metres and falls at a distance of 14 metres from the wall. The magnitude of velocity on the ball will be

Choices

Choice (4) Response

a.

√l82 m/s

b.

√181 m/s

c.

√186 m/s

d.

√185 m/s

Question number: 150

» Kinematics » Uniformly Accelerated Motion

MCQ▾

Question

The shaft of an electric motor starts from rest and on the application of a torque, it gains an angular acceleration given by a = 3t –t 2 during the first 2 seconds after it starts after which a = 0. The angular velocity after 6 sec will be –

Choices

Choice (4) Response

a.

3/10 rad/sec

b.

4/30 rad/sec

c.

10/3 rad/sec

d.

30/4 rad/sec

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