Experimental Skills-Screw Gauge (NEET Physics): Questions 1 - 4 of 29

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Question number: 1

» Experimental Skills » Screw Gauge

MCQ▾

Question

The velocities of three particles of masses 10g, 10g and 30g are 10i, 10j and 10k respectively. The velocity of the center of mass of the three particles is

Choices

Choice (4) Response

a.

20i^+30j^+5k^

b.

10i^+10j^+10k^

c.

2i^+2j^+6k^

d.

2i^+3j^+5k^

Question number: 2

» Experimental Skills » Screw Gauge

MCQ▾

Question

Two spheres of masses 2M and M are initially at rest at. Distance R apart. Due to mutual force of attraction, they approach each other. When they are at separation R/2, the acceleration of the center of mass of spheres would be

Choices

Choice (4) Response

a.

0 m/s 2

b.

gm/s 2

c.

12 gm/s 2

d.

3 gm/s 2

Question number: 3

» Experimental Skills » Screw Gauge

MCQ▾

Question

Consider a system of two particles having mass m 1 and m 2. If the particle of mass m 1 is pushed towards the centre of mass of particles through a distance d, by what distance would be particle of mass m 2 move so as to keep the centre of mass of particles at the original position?

Choices

Choice (4) Response

a.

m1m2d

b.

d

c.

m2m1d

d.

m1m1+m2d

Question number: 4

» Experimental Skills » Screw Gauge

MCQ▾

Question

The distance between the carbon atom and the oxygen atom in a carbon monoxide molecule is 1.1. Given, mass of carbon atom is 12 a. m. u. and mass of oxygen atom is 16 a. m. u. , calculate the position of the center of mass of the carbon monoxide molecule

Choices

Choice (4) Response

a.

1 Å from the oxygen atom

b.

0.63 Å from the carbon atom

c.

0.12 Å from the oxygen atom

d.

6.3 Å from the carbon atom

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