NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 36 - 40 of 2184

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Question number: 36

» Kinematics » Motion in a Plane

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MCQ▾

Question

the effective acceleration of a body, when thrown upwards with acceleration a will be:

Choices

Choice (4) Response

a.

b.

(a – g)

c.

d.

(a + g)

Question number: 37

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

In the relation , P is pressure, Z is the distance, k is Boltzmann constant and θ is the temperature. The dimensional formula of β will be

Choices

Choice (4) Response

a.

[M 0 L 2 T -1]

b.

[M 1 L 2 T 1]

c.

[M 0 L 2 T 0]

d.

[M 1 L 0 T -1]

Question number: 38

» Physics and Measurement » Technology and Society

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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