MEDIUM

JEE Main

IMPORTANT

Earn 100

A student in the laboratory measures thickness of a wire using screw gauge. The readings are $1.22 mm, 1.23 mm, 1.19 mm$ and $1.20 mm$ . The percentage error is $\frac{x}{121} %$ . The value of $x$ is _____ .

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Important Questions on Physics and Measurement

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 29 June 2022 Shift 1>Q 98

In van dar Wall equation

[P + \frac{a}{V^{2}}] [V - b] = R T; P

is pressure,

V

is volume,

R

is universal gas constant and

T

is temperature. The ratio of constants

\frac{a}{b}

is dimensionally equal to :

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 29 June 2022 Shift 2>Q 99

The Vernier constant of Vernier callipers is

0.1 mm

and it has zero error of

(- 0.05 cm)

. While measuring diameter of a sphere, the main scale reading is

1.7 cm

and coinciding vernier division is

5

. The corrected diameter will be _____

\times 10^{- 2} cm

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 25 July 2022 Shift 1>Q 100

If momentum

[P]

, area

[A]

and time

[T]

are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 25 July 2022 Shift 1>Q 101

Which of the following physical quantities have the same dimensions?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 25 July 2022 Shift 2>Q 102

The maximum error in the measurement of resistance, current and time for which current flows in an electrical circuit are

1 %, 2 %

and

3 %

respectively. The maximum percentage error in the detection of the dissipated heat will be:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 July 2022 Shift 1>Q 103

A screw gauge of pitch

0.5 mm

is used to measure the diameter of uniform wire of length

6.8 cm

, the main scale reading is

1.5 mm

and circular scale reading is

7

. The calculated curved surface area of wire to appropriate significant figures is
[Screw gauge has

50

divisions on the circular scale]

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 July 2022 Shift 1>Q 104

In an experiment to determine the Young's modulus of wire of a length exactly

1 m

, the extension in the length of the wire is measured as

0.4 mm

with an uncertainty of

\pm 0.02 mm

when a load of

1 kg

is applied. The diameter of the wire is measured as

0.4 mm

with an uncertainty of

\pm 0.01 mm

. The error in the measurement of Young's modulus

(Δ Y)

is found to be

x \times 10^{10} N m^{- 2}

. The value of

x

is _____ .

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 1 - Physics and Measurement>JEE Main - 26 July 2022 Shift 2>Q 105

In a Vernier Caliper

10

divisions of Vernier scale is equal to the

9

divisions of main scale. When both jaws of Vernier Calipers touch each other, the zero of the Vernier scale is shifted to the left of zero of the main scale and

4^{th}

Vernier scale division exactly coincides with the main scale reading. One main scale division is equal to

1 mm

. While measuring diameter of a spherical body, the body is held between two jaws. It is now observed that zero of the Vernier scale lies between

30

and

31

divisions of main scale reading and

6^{th}

Vernier scale division exactly coincides with the main scale reading. The diameter of the spherical body will be:

A student in the laboratory measures thickness of a wire using screw gauge. The readings are 1.22 mm,1.23 mm,1.19 mm and 1.20 mm. The percentage error is x121%. The value of x is _____ .

Important Questions on Physics and Measurement

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A student in the laboratory measures thickness of a wire using screw gauge. The readings are $1.22 mm, 1.23 mm, 1.19 mm$ and $1.20 mm$ . The percentage error is $\frac{x}{121} %$ . The value of $x$ is _____ .