Units

Q.

What is the meaning of magnitude in physics?

Q.

How do you convert grams to kilograms?

Q.

What is the difference between fundamental and derived quantities ?

Q.

What are the parameters required to express scalar and vector quantities?

Q.

Which speed is greater:$30m/s$or $30m/sor30km/h?$$30km/h$?

Q.

How do you convert kg to g? Give an example.

Q.

The quantities which do not depend on other physical quantities are called ___ physical quantity.

Q.

If 2 Quantities have the same unit, then they must have the same dimension.

1. False

2. True

Q. A car moves with a speed of $10\text{m/s}$ for $0.5$ hours and then with a speed of $60\text{km/h}$ for the next $15$ minutes. The total distance covered by the car is:​

1. $50\text{km}$​
2. $100\text{km}$​
3. $66\text{km}$​
4. $33\text{km}$​

Q.

Must a physical quantity compulsorily have a dimension?

1. True

2. False

Q.

The questions 'How far?', 'How long?' and 'How much?' can respectively be answered by which of the following quantities?

1. Mass, Length, Time.

2. Length, Mass, Time.

3. Time, Mass, Length.

4. Length, Time, Mass.

Q.

Look at a meter scale carefully and answer the following question: How many $mm$ are there in a $m$?

Q.

If we have a metre scale, then how many divisions do we need to make such that each division is equal to a centimetre?

1. 20

2. 100

3. 10

4. 1000

Q.

Does a physical quantity have to have a dimension?

1. Yes

2. No

Q. If 2 Quantities have the same unit then they must have the same dimension.

1. True
2. False

Q.

If 2 quantities have the same unit then should they have the same dimension?

1. NO

2. YES

Q.

If 2 quantities have the same unit then should they have the same dimension?

1. YES

2. NO

Q.

Which of the following is not a measure to express time interval?

1. light year

2. day

3. hour

4. minute

Q. According to conversion of units of measurement:
$1kg$ = ____ $grams$

1. $0.1$
2. $10$
3. $100$
4. $1000$

Q. Which physical quantity is used to describe how far a body has traveled?

1. Temperature
2. Distance
3. Mass
4. Time

Q.

Which of the following is a unit of measuring length?

1. Temperature

2. Yard

3. Metre/second

4. Joule