NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 370 - 372 of 2320

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Question number: 370

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

A body of mass 0.05 kg falls from a height of 5 meter into a pile of sand. The body penetrates the sand a distance of 5 cm before stopping. What force has the sand exerted on the body?

Choices

Choice (4)Response

a.

-196 N

b.

- 19.6 N

c.

-49 N

d.

0.196 N

Question number: 371

» Electrostatics » Electric Potential

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MCQ▾

Question

A proton moves a distance d in a uniform electric field if as shown in the figure. Then which of the following statements are correct?

Proton and its direction

Proton and Its Direction

  1. Electric field do a negative work on the proton
  2. Electric potential energy of the proton increases
  3. Electric field do a positive work on the proton
  4. Electric potential energy of the proton decreases

Select the correct answers and mark it according to the following codes:

Choices

Choice (4)Response

a.

1,2 and 3

b.

1 and 4

c.

1 and 3

d.

1 and 2

Question number: 372

» Properties of Solids & Liquids » Calorimetry

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MCQ▾

Question

Which principle is involved in the experiment to determine the specific heat of a liquid by the method of mixture?

Choices

Choice (4)Response

a.

Heat gained by solid and calorimeter = Heat lost by liquid.

b.

Heat lost by solid and liquid = Heat gained by calorimeter.

c.

Heat gained by solid = Heat lost by calorimeter and liquid.

d.

Heat lost by solid = Heat gained by calorimeter and liquid.

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