Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 13

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IMPORTANT

Earn 100

The dimensions of light year are

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Important Questions on Physics and Measurement

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 14

Which of the following is dimensionally correct?

MEDIUM

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 15

Suppose refractive index

μ

is given as

μ = A + \frac{B}{λ^{2}}

, where

A

and

B

are constants and

λ

is the wavelength, then dimensions of

B

are same as that of

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 16

Two quantities, $A$ and $B$ have different dimensions. Which mathematical operation, given below, is physically meaningful?

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 17

Which one of the following does not have the same dimensions?

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 18

If the speed

v

of a particle, of mass

m

, as a function of time

t

, is given by

v = ω A \sin [(\sqrt{\frac{k}{m}}) t]

, where

A

has dimension of length. Choose the correct option.

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 19

Choose the incorrect statement :

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 20

The dimensional equation for the electrical resistance of a conductor is

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Physics Crash Course JEE Main>Chapter 1 - Physics and Measurement>Level 1>Q 21

A force

F

is given by,

F = a t + b t^{2}

, where

t

is time. What are the dimensions of

a

and

b

?