NEET Physics: Questions 700 - 704 of 2142

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Question number: 700

» Laws of Motion » Force and Inertia

MCQ▾

Question

In the above example, the velocity after 2 sec will be - (in m/sec)

Choices

Choice (4) Response

a.

10√3

b.

10

c.

5

d.

5√3

Question number: 701

» 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.

Equation

b.

d

c.

Equation

d.

Equation

Question number: 702

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

The frequency of ac mains in India is

Choices

Choice (4) Response

a.

50 c/s or Hz

b.

30 c/s or Hz

c.

120 c/s or Hz

d.

60 c/s or Hz

Question number: 703

» 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

Question number: 704

» Experimental Skills » Screw Gauge

Assertion-Reason▾

Assertion (Ꭺ)

Position of center of mass is independent of the reference frame.

Reason (Ꭱ)

Centre of mass is same for all bodies.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

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