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This mock test of Test: Measurement And Error Analysis for Class 11 helps you for every Class 11 entrance exam.
This contains 10 Multiple Choice Questions for Class 11 Test: Measurement And Error Analysis (mcq) to study with solutions a complete question bank.
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QUESTION: 1

Which of the following is caused by careless handling?

Solution:

Gross errors are mostly due to lack of knowledge, judgment and care on the part of experiment. That is Gross error is caused by careless handling.

QUESTION: 2

1 fermi is equal to:

Solution:

The **fermi** is a unit of measurement of length

The metric unit prefix femto means one quadrillionth, or one (**1**) with fourteen (14) nulls in front of it, i.e. 0.000,000,000,000,001 or **1**×10^{-}^{15}. That makes one femtometer (and one **fermi**) **equal** to one quadrillionth of a meter.

QUESTION: 3

Approximate ratio of 1 fermi to 1 angstrom is …

Solution:

QUESTION: 4

Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is

Solution:

∵*V*=4/3*π**r*3

% error is volume=3×error in radius =3×1= 3%

QUESTION: 5

The error in two readings of A are 0.01 and -0.03, then mean absolute error is?

Solution:

Mean absolute error = (|0.01|+|-0.03|)/2

= 0.02

QUESTION: 6

What is the number of significant figures in 0.310×103 ?

Solution:

Number of significant figures are 3, because 103 is decimal multiplier.

QUESTION: 7

Angstrom is the unit of

Solution:

Angstrom (Å), unit of **length** used chiefly in measuring wavelengths of light, equal to 10^{−}^{10} metre, or 0.1 nanometer.

QUESTION: 8

Which is the most accurate atomic clock?

Solution:

**Cesium 133** is the element most commonly chosen for atomic clocks.

QUESTION: 9

The method used to measure the distance of a planet from the earth is

Solution:

The astronomers mainly use parallax **method** to find **distances** to objects like other **planets**. To **calculate the distance** to a star or to a **planet**, astronomers observe it from different places along **Earth's** orbit around the Sun.

QUESTION: 10

The most suitable instrument for measuring the size of an atom is.

Solution:

Only electron microscope has resolution of 0.5-0.6 Angstrom which is less than the size of an atom.

### Error Analysis - Units and Measurement, Class 11, Physics

Video | 31:24 min

### Error Analysis - Units and Measurement, Class 11, Physics

Video | 31:24 min

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