NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 38 - 41 of 2320

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Question number: 38

» Physics and Measurement » Technology and Society

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

Parallax method cannot be used for measuring distances of stars more than 100 light years away.

Reason (Ꭱ)

Because parallax angle reduces so much that it cannot be measured accurately.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 39

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

Which of the following pairs have same dimensions?

Choices

Choice (4)Response

a.

Light year and wavelength

b.

Energy and Young’s modulus

c.

Torque and work

d.

Both a. and c. are correct

Question number: 40

» Kinematics » Average Speed and Instantaneous Velocity

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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.

South-east direction

c.

West-north direction

d.

Question does not provide sufficient data or is vague

Question number: 41

» Kinematics » Motion in a Straight Line

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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

is

Choices

Choice (4)Response

a.

b.

c.

d.

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