# 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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