NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 39 - 43 of 2142

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Question number: 39

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

Question

Which of the following pairs have same dimensions?

Choices

Choice (4) Response

a.

Torque and work

b.

Light year and wavelength

c.

Energy and Young’s modulus

d.

Both a. and b. are correct

Question number: 40

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A train is moving towards east and a car is along north, both with same speed. The observed direction of car to the passenger in the train is

Choices

Choice (4) Response

a.

East-north direction

b.

West-north direction

c.

South-east direction

d.

All of the above

Question number: 41

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A small block slides without friction down an inclined plane starting from rest. Let Sn be the distance travelled from time t = n – 1 to t = n. then

Equation

is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 42

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

If 97.52 is divided by 2.54, the correct result in terms of significant figures is

Choices

Choice (4) Response

a.

38.4

b.

38.39

c.

38.394

d.

38.937

Question number: 43

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct?

  1. Out of the two measurements 50.14 cm and 0.00025 ampere, the first one has greater accuracy
  2. Out of the two measurements 50.14 cm and 0.00025 ampere, the second has greater accuracy
  3. If one travels 697 m by rail and 478 km by road, the total distance is 478.697 km.
  4. If one travels 478 km by rail and 397 m by road, the total distance travelled is 875 km.

Choices

Choice (4) Response

a.

1 and 3

b.

1 and 2

c.

2 and 4

d.

1, 2, 3

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