Test: The International System of Units (NCERT) - NEET MCQ

Test: The International System of Units (NCERT) - NEET MCQ

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20 Questions MCQ Test Physics Class 11 - Test: The International System of Units (NCERT)

Test: The International System of Units (NCERT) for NEET 2024 is part of Physics Class 11 preparation. The Test: The International System of Units (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: The International System of Units (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The International System of Units (NCERT) below.
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Test: The International System of Units (NCERT) - Question 1

In International System of units, there are seven base quantities whose units are defined. Which physical quantity has a prefix with its unit?

Detailed Solution for Test: The International System of Units (NCERT) - Question 1

The SI unit of mass is kilogram in which 'kilo' is the prefix.

Test: The International System of Units (NCERT) - Question 2

The wrong unit conversion among the following is

Detailed Solution for Test: The International System of Units (NCERT) - Question 2

I astronomical unit = 1.496 x 1011 m
All the other unit conversation are correct.

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Test: The International System of Units (NCERT) - Question 3

Which of the following physical quantities has same unit in all the three system of units?

Detailed Solution for Test: The International System of Units (NCERT) - Question 3

Unit of time (i.e., second) is same in all the three system of units.

Test: The International System of Units (NCERT) - Question 4

Which of the following is not the name of a fundamental physical quantity?

Detailed Solution for Test: The International System of Units (NCERT) - Question 4

Impulse is not a fundamental physical Quantity

Test: The International System of Units (NCERT) - Question 5

Which one of the following physical quantities is not a fundamental quantity?

Detailed Solution for Test: The International System of Units (NCERT) - Question 5

Among the given physical quantities work is not a fundamental quantity whereas all other three physical quantities are fundamental quantities.

Test: The International System of Units (NCERT) - Question 6

Which one of the following statements is incorrect?

Detailed Solution for Test: The International System of Units (NCERT) - Question 6

Incorrect Statement:

• 4. The SI units are based on six base units.

The SI system actually relies on seven base units:

1. Meter (m) for length
2. Kilogram (kg) for mass
3. Second (s) for time
4. Ampere (A) for electric current
5. Kelvin (K) for thermodynamic temperature
6. Mole (mol) for amount of substance
7. Candela (cd) for luminous intensity

Correct Statements:

• 1. Direct and indirect methods are used for the measurement of physical quantities. (True - We can measure directly or use indirect methods like displacement for volume.)
• 2. Scientific notation and the prefixes are used to simplify numerical computation. (True - They help express large/small numbers conveniently.)
• 3. A dimensionally correct equation need not be a correct equation. (True - Matching units doesn't guarantee a factual equation.)
Test: The International System of Units (NCERT) - Question 7

Which one of the following is not a unit of British system of units?

Detailed Solution for Test: The International System of Units (NCERT) - Question 7

Among the given units metre is not a unit of British system whereas all other belong to this system.

Test: The International System of Units (NCERT) - Question 8

Which of the following is not a unit of time?

Detailed Solution for Test: The International System of Units (NCERT) - Question 8

Parsec is the unit of distance.
1 parsec = 3.08 x 1016 m
Parsec is the distance at which average radius of earth's orbit subtends an angle of 1 arc second.

Test: The International System of Units (NCERT) - Question 9

Which one of the following is not a derived unit?

Detailed Solution for Test: The International System of Units (NCERT) - Question 9

Among the given units kilogram is the fundamental or base unit whereas others are the derived units.

Test: The International System of Units (NCERT) - Question 10

Which of the following units is not a base unit?

Detailed Solution for Test: The International System of Units (NCERT) - Question 10

Among the given units pascal is the derived unit whereas other are the fundamental or base units.

Test: The International System of Units (NCERT) - Question 11

Which of the following system of units is not based on unit of mass, length and time?

Detailed Solution for Test: The International System of Units (NCERT) - Question 11

SI is not based on units of mass, length and time alone.

Test: The International System of Units (NCERT) - Question 12

In which year SI system of units was developed and recommended by General Conference on Weights and Measures?

Detailed Solution for Test: The International System of Units (NCERT) - Question 12

The SI system of units was developed and recommended by General Conference on Weights and Measures in 1971.

Test: The International System of Units (NCERT) - Question 13

Spot out the odd one.

Detailed Solution for Test: The International System of Units (NCERT) - Question 13

Calorie, kilowatt hour, joule all are the units of energy whereas watt is the unit of power.

Test: The International System of Units (NCERT) - Question 14

Which of the following is unitless quantity?

Detailed Solution for Test: The International System of Units (NCERT) - Question 14

Among the given quantities displacement gradient is a unitless quantity.

Test: The International System of Units (NCERT) - Question 15

Match the Column I with Column II.

Detailed Solution for Test: The International System of Units (NCERT) - Question 15

Test: The International System of Units (NCERT) - Question 16

The SI unit of pressure gradient is

Detailed Solution for Test: The International System of Units (NCERT) - Question 16

∵ The SI unit of pressure is N m-2 and distance is m.
∴ The SI unit of pressure gradient is N m-3.

Test: The International System of Units (NCERT) - Question 17

The relative density of lead is 11.3. Its density in SI unit is

Detailed Solution for Test: The International System of Units (NCERT) - Question 17

∴ Density of lead = 11.3 × 1 × 103 kg m−3
(∵ Density of water = 1 × 10kg m−3)
= 11.3 × 103 kg m−3 = 1.13 × 104 kg m−3

Test: The International System of Units (NCERT) - Question 18

The value of universal gravitational constant G = 6.67 × 10−11 N m2 kg−2. The value of G in units of g−1 cm3 s−2 is

Detailed Solution for Test: The International System of Units (NCERT) - Question 18

G = 6.67 × 10−11 N mkg−2
= 6.67 × 10−11 × (kg m s−2)(m2)(kg)−2
= 6.67 × 10−11 × [(1000 g) × (100 cm) × s−2] × (100 cm)× (1000 g)−2
= 6.67 × 10−8 g−1 cm3 s−2

Test: The International System of Units (NCERT) - Question 19

If the value of atmospheric pressure is 106 dyne cm−2, its value in SI units is

Detailed Solution for Test: The International System of Units (NCERT) - Question 19

Pressure = F/A
∴ 106 dyne cm−2 = 105 N m−2.

Test: The International System of Units (NCERT) - Question 20

The solid angle subtended by the periphery of an area 1 cm2 at a point situated symmetrically at a distance of 5 cm from the area is

Detailed Solution for Test: The International System of Units (NCERT) - Question 20

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