Physics 9th Chap 1 Topic 6(Prefixes)

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Physics Chapter 1 (Topic6 : Prefixes)

Analyze and express numerical data, using prefixes.

1 / 38

Which prefix represents with (10⁻³)?

A) centi (c)

B) milli (m)

C) nano (n)

D) micro (μ)

2 / 38

1 micrometer (μ m) is equal to:

A) 10⁻³ m

B) 10⁻¹² m

C) 10⁻⁹ m

D) 10⁻⁶ m

3 / 38

Which prefix represents the largest value?

A) giga (G)

B) tera (T)

C) mega (M)

D) kilo (k)

4 / 38

1 nanosecond (ns) is equal to:

A) 10⁻⁶ s

B) 10⁻⁹ s

C) 10⁻¹² s

D) 10⁻³ s

5 / 38

Which prefix is correctly matched with (10⁶)?

A) mega

B) tera

C) kilo

D) giga

6 / 38

1 kilometer (km) equals:

A) 1000 m

B) 10,000 m

C) 1,000,000 m

D) 100 m

7 / 38

Which of the following is the smallest quantity?

A) 1 nm

B) 1 μ m

C) 1 cm

D) 1 mm

8 / 38

1 gigabyte (GB) represents:

A) 10⁶ bytes

B) 10³ bytes

C) 10⁹ bytes

D) 10¹² bytes

9 / 38

Which prefix is correctly written for (10⁻¹²)?

A) pico

B) milli

C) micro

D) nano

10 / 38

0.01 meter is equivalent to:

A) 1 mm

B) 100 mm

C) 10 cm

D) 1 cm

11 / 38

Which prefix represents (10⁻⁶)?

A) nano

B) pico

C) milli

D) micro

12 / 38

Which is the correct order from smallest to largest?

A) nano < pico < milli < micro

B) micro < milli < nano < pico

C) milli < micro < nano < pico

D) pico < nano < micro < milli

13 / 38

5000 m is equal to:

A) 50 km

B) 500 km

C) 5 km

D) 0.5 km

14 / 38

Which prefix is used for (10⁻²)?

A) centi

B) milli

C) deci

D) micro

15 / 38

1 millisecond (ms) equals:

A) 10⁻⁹ s

B) 10⁻¹² s

C) 10⁻³ s

D) 10⁻⁶ s

16 / 38

Which is correct about SI prefixes?

A) They remove units

B) They replace base quantities

C) They modify magnitude only

D) They change the physical quantity

17 / 38

1 cm equals:

A) 10⁻² m

B) 10⁻¹ m

C) 10⁻³ m

D) 10⁻⁴ m

18 / 38

Which is largest?

A) 1 nm

B) 1 μ m

C) 1 mm

D) 1 cm

19 / 38

2 km is equal to:

A) 20,000 m

B) 0.2 m

C) 2000 m

D) 200 m

20 / 38

Which prefix is NOT a multiple of base units?

A) mega

B) milli

C) kilo

D) giga

21 / 38

1 terabyte (TB) equals:

A) 10⁶ bytes

B) 10¹⁵ bytes

C) 10⁹ bytes

D) 10¹² bytes

22 / 38

0.000001 m is written as:

A) 1 μ m

B) 1 nm

C) 1 pm

D) 1 mm

23 / 38

Which is correct conversion?

A) 1 m = 1000 cm

B) 1 m = 10 cm

C) 1 m = 100 cm

D) 1 m = 1000 mm

24 / 38

Which prefix is used for (10³)?

A) centi

B) milli

C) mega

D) kilo

25 / 38

Which is correct descending order of magnitude?

A) milli > kilo > mega > giga

B) giga > mega > kilo > milli

C) kilo > giga > mega > milli

D) mega > kilo > giga > milli

26 / 38

1 mm equals:

A) 10⁻² m

B) 10⁻⁴ m

C) 10⁻¹ m

D) 10⁻³ m

27 / 38

Which prefix is closest to atomic scale?

A) milli

B) kilo

C) micro

D) nano

28 / 38

3 × 10³ m is equal to:

A) 300 km

B) 3 km

C) 30 km

D) 0.3 km

29 / 38

Which statement is correct?

A) Prefixes replace SI units

B) Prefixes change units completely

C) Prefixes only modify magnitude

D) Prefixes remove measurement errors

30 / 38

Which is smallest unit?

A) 1 cm

B) 1 μ m

C) 1 mm

D) 1 nm

31 / 38

1000 m equals:

A) 0.1 km

B) 1 km

C) 100 km

D) 10 km

32 / 38

Which prefix is used for very large astronomical distances?

A) kilo

B) milli

C) mega

D) tera

33 / 38

1 μ m is equal to:

A) 0.0000001 m

B) 0.000001 m

C) 0.001 m

D) 0.0001 m

34 / 38

Which is correct about centi and milli?

A) milli is larger than centi

B) centi is smaller than milli

C) centi = 10⁻², milli = 10⁻³

D) both are equal

35 / 38

Which prefix is used in computer memory?

A) kilo, mega, giga, tera

B) centi, deci, milli

C) milli, micro, nano

D) pico, nano, micro

36 / 38

Which is correct scientific interpretation?

A) Prefixes simplify numerical representation

B) Prefixes remove units

C) Prefixes replace measurements

D) Prefixes change physics laws

37 / 38

Which is correct conversion?

A) 1 cm = 10⁻³ m

B) 1 cm = 10⁻² m

C) 1 cm = 10⁻⁴ m

D) 1 cm = 10⁻¹ m

38 / 38

Which is correct statement about SI prefixes?

A) They replace base quantities

B) They remove units

C) They are independent units

D) They are multipliers of base units

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