Physics and Measurement-Dimensions of Physical Quantities (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 6 of 16

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Question number: 1

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

A physical quantity x depends on quantities y and z as follows: x = Ay + B tan Cz, where A, B and C are constants. Which of the following do not have the same dimensions?

Choices

Choice (4) Response

a.

x and A

b.

x and B

c.

C and z-1

d.

y and B/A

Question number: 2

» Physics and Measurement » Dimensions of Physical Quantities

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MCQ▾

Question

The dimensional formula for Planck’s constant (h) is

Choices

Choice (4) Response

a.

[M 0 L 2 T -2]

b.

[M 0 L 2 T -1]

c.

[M L -2 T -2]

d.

[M L -2 T -3]

Question number: 3

» 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: 4

» 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: 5

» 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: 6

» 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]

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