Experimental Skills (NEET Physics): Questions 18 - 21 of 66

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 18

» Experimental Skills » Vernier Callipers

MCQ▾

Question

The center of mass of a triangle shown in figure has coordinates

Triangle with height h and width b

Triangle With Height H and Width B

Here in above figure we shows that center of mass of triangle

Choices

Choice (4) Response

a.

x=h3,y=b3

b.

x=h4,y=b2

c.

x=h2,y=b4

d.

x=h2,y=b2

Question number: 19

» Experimental Skills » Screw Gauge

Assertion-Reason▾

Assertion (Ꭺ)

The center of mass of a system of n particles is the weighted average of the position vector of the n particles making up the system.

Reason (Ꭱ)

The position of the center of mass of a system is independent of coordinate system.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

Question number: 20

» Experimental Skills » Screw Gauge

MCQ▾

Question

In the HCl molecule, the separation between the nuclei of the two atom is about 1.27 Å (1Å = 10 -10 m). The approximate location of the center of mass from the hydrogen atom, assuming the chlorine atom to be about 35.5 times massive as hydrogen is

Choices

Choice (4) Response

a.

l Å

b.

2.5 Å

c.

1.24 Å

d.

1.5 Å

Question number: 21

» Experimental Skills » Screw Gauge

MCQ▾

Question

2 bodies of different masses of 3 kg and 6 kg are moving with, velocities 20 m/s and 10 m/s towards each other due to mutual gravitational attraction. What is the velocity of their center of mass?

Choices

Choice (4) Response

a.

6 m/s

b.

5 m/s

c.

Zero

d.

8 m/s

f Page
Sign In