Experimental Skills (NEET Physics): Questions 14 - 17 of 66

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Question number: 14

» Experimental Skills » Screw Gauge

MCQ▾

Question

Three identical metal balls each of radius r are placed touching each other on a horizontal surface such that an equilateral triangle is formed, when centers of three balls are joined. The center of the mass of system is located at

Choices

Choice (4) Response

a.

Line joining centers of any two balls

b.

Centre of one of the balls

c.

Horizontal surface

d.

Point of intersection of the medians

Question number: 15

» Experimental Skills » Screw Gauge

MCQ▾

Question

Four particles of masses m, 2m, 3m and 4m are arranged at the corners of a parallelogram with each side equal to a and one of the angle between two adjacent sides is 60°. The parallelogram lies in the x-y plane with mass-m at the origin and 4m on the x-axis. The center of mass of the arrangement will be located at

Choices

Choice (4) Response

a.

(a2,3a4)

b.

(0.95a,34,)

c.

(32a,0.95a)

d.

(3a4,a2)

Question number: 16

» Experimental Skills » Vernier Callipers

MCQ▾

Question

Two bodies of masses 2 kg and 4 kg are moving with velocities 5 m/s and 8 m/s respectively along same direction. Then the velocity of their center of mass will be

Choices

Choice (4) Response

a.

5.25 m/s

b.

8.1 m/s

c.

7.3 m/s

d.

6.4 m/s

Question number: 17

» Experimental Skills » Vernier Callipers

MCQ▾

Question

A 2 kg body and a 3 kg body are moving along the x-axis. At a particular instant the 2 kg body has a velocity of 3 ms -1 and the 3 kg body has the velocity of 2ms -1. The velocity of the center of mass at that instant is

Choices

Choice (4) Response

a.

0

b.

1 ms -1

c.

5 ms -1

d.

None of the above

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