EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 24 June 2022 Shift 2>Q 84

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JEE Main

IMPORTANT

Earn 100

Identify the pair of physical quantities that have same dimensions:

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Important Questions on Physics and Measurement

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 25 June 2022 Shift 1>Q 85

If

Z = \frac{A^{2} B^{3}}{C^{4}}

, then the relative error in

Z

will be

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 25 June 2022 Shift 2>Q 86

For

z = a^{2} x^{3} y^{\frac{1}{2}}

, where '

a

' is a constant. If percentage error in measurement of '

x

' and '

y

' are

4 %

and

12 %

, respectively, then the percentage error for '

z

' will be _____

%

.

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 June 2022 Shift 2>Q 87

The dimension of mutual inductance is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 June 2022 Shift 2>Q 88

A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in

1 cm

on main scale and

50

Vernier scale divisions are equal to

49

main scale divisions, then least count of the travelling microscope is _____

\times 10^{- 6} m

.

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 June 2022 Shift 1>Q 89

An expression for a dimensionless quantity

P

is given by

P = \frac{α}{β} \log_{e} (\frac{k T}{β x})

; where

α

and

β

are constants,

x

is distance;

k

is Boltzmann constant and

T

is the temperature. Then the dimensions of

α

will be

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 June 2022 Shift 1>Q 90

In a vernier callipers, each

cm

on the main scale is divided into

20

equal parts. If

10^{t h}

vernier scale division coincides with

9^{t h}

main scale division. Then the value of vernier constant will be _____

\times 10^{- 2} mm

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 27 June 2022 Shift 1>Q 91

A silver wire has a mass

(0.6 \pm 0.006) g

, radius

(0.5 \pm 0.005) mm

and length

(4 \pm 0.04) cm

. The maximum percentage error in the measurement of its density will be

EASY

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 27 June 2022 Shift 2>Q 92

The SI unit of a physical quantity is

Pascal ‐ \sec

. The dimensional formula of this quantity will be