Standardized Measurement

Q.

Define fundamental unit.

Q.

Define the fundamental units of SI System.

Q. In CGS system of measurement, the base units for length, mass, and time are _______ respectively.

1. kg, cm, s
2. cm, g, s
3. g, cm, s
4. s, cm, g

Q.

The SI unit of mass is___

Q.

If an appliance bears the ISI mark, it means that it is safe to handle and does not waste electrical energy.

1. True

2. False

Q. Distance is measured in _________ in MKS system, and in ________ in CGS system.

1. centimetre, kilometre
2. kilometre, metre
3. metre, metre
4. metre, centimetre

Q. The units of the fundamental quantities are called as:

1. Derived units
2. Complex units
3. Simple units
4. Standard units

Q. Which of the following fundamental quantities have the same standard unit in both MKS and CGS system?

1. Mass
2. Length
3. Time
4. Both mass and time

Q.

Which quantity has same units of measurement in MKS as well as CGS system?

1. Force

2. Length

3. Mass

4. Time

Q.

Name any two multiples and sub-multiples of metre and show their relationship.

Q.

Benchmark metrics tend to be ___

1. Feature-specific

2. Project-specific

3. Goal-Oriented

Q. How many fundamental SI quantities are there?

1. 1
2. 5
3. 3
4. 7

Q. is the unit of mass, according to the British system.

1. Kilogram
2. Gram
3. Pound
4. Quintal

Q. Which of the physical unit change as we move from MKS to CGS system of measurements?

1. Length only.
2. Mass only.
3. Both length and mass.
4. Length, mass and time.

Q. Rahul measures his height and expresses it in terms of a fundamental unit of the FPS system of measurement. What do you think is the symbol of the unit he used?

1. $\text{m}$
2. $\text{ft}$
3. $\text{lb}$
4. $\text{s}$

Q. Which of these units of distance is largest?

1. Mile
2. Foot
3. kilometre
4. Yard

Q. In MKS system:

1. Mass is measured in grams.
2. Length is measured in metres.
3. Time is measured in seconds.
4. Length is measured in kilometers.

Q. Match the following units to their corresponding symbols?

Name of unit	Symbol of unit
(i) Metre	(a) kg
(ii) Kilogram	(b) m
(iii) Second	(c) s

1. $\left(i\right)-\left(a\right),\left(ii\right)-\left(b\right),\left(iii\right)-\left(c\right)$
2. $\left(i\right)-\left(c\right),\left(ii\right)-\left(b\right),\left(iii\right)-\left(a\right)$
3. $\left(i\right)-\left(b\right),\left(ii\right)-\left(a\right),\left(iii\right)-\left(c\right)$
4. $\left(i\right)-\left(a\right),\left(ii\right)-\left(c\right),\left(iii\right)-\left(b\right)$

Q. Which of the following standard marks has been created by the government of India for electrical appliances?

1. ISI mark
2. BIS hallmark
3. Agmark
4. FPO mark

Q. If two quantities have the same unit then they must have the same dimension.

1. True
2. False

Q.

Metric system is basically a system used for measuring:

1. length
2. mass
3. time
4. temperature

Q. Match the following in CGS system:

Physical quantity	Symbol of units
(i) Length	(a) g
(ii) Time	(b) cm
(iii) Mass	(c) s

1. $\left(i\right)-\left(a\right),\left(ii\right)-\left(b\right),\left(iii\right)-\left(c\right)$
2. $\left(i\right)-\left(c\right),\left(ii\right)-\left(b\right),\left(iii\right)-\left(a\right)$
3. $\left(i\right)-\left(b\right),\left(ii\right)-\left(c\right),\left(iii\right)-\left(a\right)$
4. $\left(i\right)-\left(c\right),\left(ii\right)-\left(a\right),\left(iii\right)-\left(b\right)$

Q. Which scientific unit is used to measure mass?

1. Kilogram
2. Metre
3. Second
4. Mole

Q.

Write appropriate unit for the following:

• The distance between cities

Q. Which among the following is the SI unit of temperature?

1. Degree celsius
2. Degree Fahrenheit
3. Celsius
4. Kelvin

Q. Match the below physical quantities with their respective units in MKS system.

1. metre
2. kilogram
3. second

Q. This section contains 1 Assertion-Reason type question, which has 4 choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
A : Among the set of parallel axes, the moment of inertia of a body is minimum about the axis passing through its centre of mass.
R : According to parallel axis theorem, I₁ = I_CM + md², where I₁ is moment of inertia of a body about some axis parallel to the axis passing through centre of mass with moment of inertia I_CM, mass of body m and at a distance of d from it.
इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (A), (B), (C) तथा (D) दिये गये हैं, जिनमें से केवल एक सही है।
A : समान्तर अक्षों के समूह में, एक पिण्ड का जड़त्व आघूर्ण इसके द्रव्यमान केन्द्र से गुजरने वाले अक्ष के सापेक्ष न्यूनतम होता है।
R : समान्तर अक्ष प्रमेय I₁ = I_CM + md² के अनुसार, जहाँ I₁ एक पिण्ड का अपने द्रव्यमान केन्द्र से गुजरने वाले अक्ष के समान्तर किसी अक्ष के सापेक्ष जड़त्व आघूर्ण है, यह इससे दूरी d के वर्ग व पिण्ड के द्रव्यमान m के गुणन तथा पिण्ड के जड़त्व आघूर्ण I_CM का योग है।

1. (A) is true but (R) is false
   (A) सही है लेकिन (R) गलत है
2. (A) is false but (R) is true
   (A) गलत है लेकिन (R) सही है
3. Both (A) and (R) are true but (R) is not the correct explanation of (A)
   (A) तथा (R) दोनों सही हैं लेकिन (R), (A) का सही स्पष्टीकरण नहीं है
4. Both (A) and (R) are true and (R) is the correct explanation of (A)
   (A) तथा (R) दोनों सही हैं तथा (R), (A) का सही स्पष्टीकरण है

Q. According to conversion of units of measurement:
$1m=1000cm$

1. True
2. False

Q.

Name the fundamental units

Q. Which of the following measurement is not measured in SI base unit?

1. $5m$of cloth
2. $20s$of time
3. Surface area of $25c{m}^2$
4. $2kg$of Silver