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Write down the number of significant figures in the following:

$(i) 165 (i i) 2.05 (i i i) 34.000 m (i v) 0.005 (v) 0.02340 {Nm}^{- 1} (v i) 26900 (v i i) 26900 kg$

Important Questions on Units and Measurements

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Physics>Mechanics>Units and Measurements>Significant Figures

N_{A}, N_{B}

and

N_{C}

are the number of significant figures in

A = 0.001204 m, B = 43120000 m

, and

C = 1.200 m

respectively then

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Physics>Mechanics>Units and Measurements>Significant Figures

Order of magnitude of a physical quantity is the

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Physics>Mechanics>Units and Measurements>Significant Figures

The number of significant figures in

0.07800

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Physics>Mechanics>Units and Measurements>Significant Figures

The area of a rectangular field (in

m^{2}

) of length

55.3 m

and breadth

25 m

after rounding off the value for correct significant digits is:

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Physics>Mechanics>Units and Measurements>Significant Figures

The diameter and height of a cylinder are measured by a meter scale to be

12 .6 \pm 0 .1 cm

and

34 .2 \pm 0 .1 cm

, respectively. What will be the value of its volume in appropriate significant figures?

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Physics>Mechanics>Units and Measurements>Significant Figures

The length and diameter of a cylinder are measured to be

10.1031 cm

and

2.0935 cm

respectively. The volume of the cylinder to an appropriate significant figures is

EASY

Physics>Mechanics>Units and Measurements>Significant Figures

The distance of a circle is

2.486 m

. Its area with due regard to signifiant figures is (Given

π = 3.142

)

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Physics>Mechanics>Units and Measurements>Significant Figures

Taking into account of the significant figures, what is the value of

9.99 m - 0.0099 m

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Physics>Mechanics>Units and Measurements>Significant Figures

In an experiment on a simple pendulum to determine the acceleration due to gravity, the student measures the length of the thread as

63.2 cm

and diameter of the pendulum bob as

2.256 cm .

The student should take the length of the pendulum to be

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Physics>Mechanics>Units and Measurements>Significant Figures

For the four sets of three measured physical quantities as given below. Which of the following options is correct?

(i)

A_{1} = 24.36, B_{1} = 0.0724, C_{1} = 256.2

(i i)

A_{2} = 24.44, B_{2} = 16.082, C_{2} = 240.2

(i i i)

A_{3} = 25.2, B_{3} = 19.2812, C_{3} = 236.183

(i v)

A_{4} = 25, B_{4} = 236.191, C_{4} = 19.5

EASY

Physics>Mechanics>Units and Measurements>Significant Figures

A body accelerates from rest with a uniform acceleration

a

for a time

t .

The uncertainty in '

a

' is

8 %

and the uncertainty in '

t

' is

4 % .

The uncertainty in the speed is

MEDIUM

Physics>Mechanics>Units and Measurements>Significant Figures

The area of a square is

5.29 c m^{2} .

The area of

7

such squares taking into account the significant figures is:

EASY

Physics>Mechanics>Units and Measurements>Significant Figures

Two numbers

a = 0.92

and

b = 0.08

are given. The number of significant figures present in the result after the following operations,

a + b, a - b, a \times b

and

\frac{a}{b}

, respectively, are

EASY

Physics>Mechanics>Units and Measurements>Significant Figures

If edge length of a cuboid are measured to be 1.2cm, 1.5cm and 1.8cm, then volume of the cuboid is

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Physics>Mechanics>Units and Measurements>Significant Figures

The number of significant digits in

0.001001

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Physics>Mechanics>Units and Measurements>Significant Figures

The respective number of significant figures for the numbers

23.023

0.0003

and

2.1 \times 10^{- 3}

are

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Physics>Mechanics>Units and Measurements>Significant Figures

Given

π = 3.14

, the value of

π^{2}

according to the concept of significant figures is

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Physics>Mechanics>Units and Measurements>Significant Figures

If the value of resistance is

10.845 Ω

and the value of current is

3.23 A,

the potential difference is

35.02935 V .

Find its value in significant number.

EASY

Physics>Mechanics>Units and Measurements>Significant Figures

The number of significant digits in

200.40

are

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Physics>Mechanics>Units and Measurements>Significant Figures

The number of significant figures in

3400

Write down the number of significant figures in the following: (i) 165 (ii) 2.05 (iii) 34.000 m (iv) 0.005 (v) 0.02340 Nm-1 (vi) 26900 (vii) 26900 kg

Important Questions on Units and Measurements

Learn and Prepare for any exam you want !

Write down the number of significant figures in the following:

$(i) 165 (i i) 2.05 (i i i) 34.000 m (i v) 0.005 (v) 0.02340 {Nm}^{- 1} (v i) 26900 (v i i) 26900 kg$