Kinematics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 94 - 98 of 233

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Question number: 94

» Kinematics » Uniform Circular Motion

MCQ▾

Question

A cane filled with water is revolved in a vertical circle of radius 4 m and water just does not fall down. The time period of revolution will be -

Choices

Choice (4) Response

a.

1 s

b.

4 s

c.

8 s

d.

10 s

Question number: 95

» Kinematics » Motion in a Plane

MCQ▾

Question

The path followed by a body projected along y axis is given by y = √3 x - (1/2) x2. If g = 10 m/s2, then the initial velocity of projectile will be - (x and y are in m)

Choices

Choice (4) Response

a.

10 √3 m/s

b.

10 √2 m/s

c.

2 √10 m/s

d.

3 √10 m/s

Question number: 96

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A body of mass 4 kg lying on a smooth surface is attached to a string 6 m long and then whirled round in a horizontal circle making 60 revolution per minute. The centripetal acceleration will be

Choices

Choice (4) Response

a.

23.68 m/s 2

b.

236.6 m/s 2

c.

1.18 m/s 2

d.

2.368 m/s 2

Question number: 97

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The length of second’s hand in a watch is 1 cm. The change in velocity of its tip in 15 second is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

0

Question number: 98

» Kinematics » Motion in a Plane

MCQ▾

Question

Rishabh and Bappy are playing with two different balls of masses m and 2m respectively. If Rishabh throws his ball vertically up and Bappy at an angle 0, both of them stay in our view for the same period. The heights attained by the two balls are in the ratio of

Choices

Choice (4) Response

a.

1: 1

b.

2: 1

c.

1: sec 0

d.

1: cos 9

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