BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 49 - 54 of 382

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Question 49

Question

MCQ▾

A body of mass and velocity collides with a stationary body of mass . After collision both bodies stick to each other, velocity of the bodies after collision will be –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 50

Scalar and Vector Products

Question

MCQ▾

What is the dot product of two vectors of magnitude and , if angle between them is ?

Choices

Choice (4)Response

a.

7.5

b.

8.4

c.

5.2

d.

8.6

Question 51

Question

MCQ▾

Waterfalls from a height The rise in temperature of water at bottom if whole of the energy remains in water, will be –

(specific heat of water )

Choices

Choice (4)Response

a.

b.

c.

d.

Question 52

Question

MCQ▾

A cylindrical resonance tube, open at both ends, has a fundamental frequency in air. If half of the length is dipped vertically in water, the fundamental frequency of the air column will be –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 53

Question

MCQ▾

The mass number of is and that of sulfur is . The radius of sulfur nucleus is larger than that of helium by a factor of –

Choices

Choice (4)Response

a.

4

b.

c.

2

d.

6

Question 54

Question

MCQ▾

If a body of mass falls from a height and its total potential energy is conserved into kinetic energy, at the point of contact of the body with the surface, then decrease in potential energy of the body at the contact is –

Choices

Choice (4)Response

a.

b.

c.

d.

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