SI Units and Prefixes: Master the Basics of Measurement in Physics

Question 1

Determine the numerical value represented by the prefix 'nano' in scientific notation.

Accepted Answer

10^-9

Answer

10^-6

Answer

10^6

Answer

10^9

Question 2

Identify the SI prefix that represents one million.

Accepted Answer

M

Answer

m

Answer

k

Answer

c

Question 3

What is the SI unit for speed?

Accepted Answer

Meters per second (m/s)

Answer

Kilometers per hour (km/h)

Answer

Miles per hour (mph)

Answer

Feet per second (ft/s)

Question 4

Which of the following is NOT an SI base unit?

Accepted Answer

Newton

Answer

Meter

Answer

Kilogram

Answer

Second

Question 5

What is the SI unit for volume?

Accepted Answer

Cubic meter (m³)

Answer

Liter (L)

Answer

Gallon (gal)

Answer

Pint (pt)

Question 6

A ball has a mass of 250 grams. Convert its mass to kilograms.

Accepted Answer

0.025

Answer

0.25

Answer

2.5

Answer

25

Question 7

Which of the following is NOT a base unit in the International System of Units (SI)?

Accepted Answer

Newton

Answer

Meter

Answer

Kilogram

Answer

Second

Question 8

In the International System of Units (SI), which unit is the fundamental unit of length?

Accepted Answer

Meter

Answer

Kilogram

Answer

Second

Answer

Kelvin

Question 9

Which SI prefix signifies 'one-millionth'?

Accepted Answer

µ (micro)

Answer

n (nano)

Answer

p (pico)

Answer

M (mega)

Question 10

Convert the value 2.5 kilometers to meters.

Accepted Answer

2500

Answer

250

Answer

0.25

Answer

25000

Question 11

Which of the following is NOT an SI unit?

Accepted Answer

Pound

Answer

Newton

Answer

Joule

Answer

Ampere

Question 12

What is the SI unit for measuring electric current?

Accepted Answer

Ampere

Answer

Volt

Answer

Ohm

Answer

Watt

Question 13

Which SI prefix represents a factor of 10^12?

Accepted Answer

P (peta)

Answer

M (mega)

Answer

G (giga)

Answer

T (tera)

Question 14

Which of the following is a derived SI unit?

Accepted Answer

Newton

Answer

Meter

Answer

Second

Answer

Kelvin

Question 15

Which of the following is the SI unit of length?

Accepted Answer

Meter (m)

Answer

Second (s)

Answer

Ampere (A)

Answer

Kilogram (kg)

Question 16

The prefix 'kilo' represents a multiplication factor of:

Accepted Answer

1000

Answer

0.001

Answer

10

Answer

100

Question 17

Convert 5 kilometers to meters:

Accepted Answer

5000 m

Answer

50000 m

Answer

500 m

Answer

0.5 m

Question 18

Which of the following quantities is expressed using a derived SI unit?

Accepted Answer

Force (N)

Answer

Temperature (K)

Answer

Time (s)

Answer

Mass (kg)

Question 19

The SI prefix for 'micro' is:

Accepted Answer

µ

Answer

k

Answer

m

Answer

n

Question 20

The SI unit of electric current is:

Accepted Answer

Ampere (A)

Answer

Volt (V)

Answer

Ohm (Ω)

Answer

Coulomb (C)

Question 21

Convert 2500 milliliters to liters:

Accepted Answer

2.5 L

Answer

0.025 L

Answer

25 L

Answer

0.25 L