NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 49 - 52 of 2184

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Question number: 49

» Physics and Measurement » Errors in Measurement

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MCQ▾

Question

Which of the following pairs have same dimensions?

Choices

Choice (4) Response

a.

Angular momentum and work

b.

Torque and Energy

c.

Energy and Young’s modulus

d.

Energy and wavelength

Question number: 50

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

X = 3YZ 2 find dimensions of Fin (MKSA) system, if X and Z are the dimensions of capacity and magnetic field respectively

Choices

Choice (4) Response

a.

[M -3 L -2 T -4 A -1]

b.

[M L -2]

c.

[M -3 L -2 T 8 A 4]

d.

[M -3 L -2 T 4 A 4]

Question number: 51

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

From the top of a multistoried building 40m tall, a boy projects a stone vertically upwards with an initial velocity of 10 ms -1 such that it eventually falls to the ground.

(1) After 4 s the stone will strike the ground

(2) After 2 s the stone will pass through the point from where it was projected

(3) Its velocity when it strikes the ground is 30 m/s

(4) Its velocity when it strikes the ground is 40 m/s

Choices

Choice (4) Response

a.

1 and 3

b.

1 and 2

c.

1,2 and 3

d.

2 and 4

Question number: 52

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

Number of particles crossing unit area perpendicular to X-axis in unit time is given by n =-D n 2 - n 1 x 2 - x 1

, where n1 and n2 are number of particles per unit volume in the position x1 and x2. Find dimensions of D called as diffusion constant.

Choices

Choice (4) Response

a.

[M 0 L T -3]

b.

[M0 L2 T -4]

c.

[M 0 L 2 T -1]

d.

[M 0 L T 2]