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) micro (μ)

C) nano (n)

D) milli (m)

2 / 38

1 micrometer (μ m) is equal to:

A) 10⁻⁹ m

B) 10⁻⁶ m

C) 10⁻¹² m

D) 10⁻³ m

3 / 38

Which prefix represents the largest value?

A) giga (G)

B) kilo (k)

C) tera (T)

D) mega (M)

4 / 38

1 nanosecond (ns) is equal to:

A) 10⁻⁶ s

B) 10⁻¹² s

C) 10⁻³ s

D) 10⁻⁹ s

5 / 38

Which prefix is correctly matched with (10⁶)?

A) mega

B) tera

C) giga

D) kilo

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1 kilometer (km) equals:

A) 10,000 m

B) 100 m

C) 1,000,000 m

D) 1000 m

7 / 38

Which of the following is the smallest quantity?

A) 1 μ m

B) 1 nm

C) 1 cm

D) 1 mm

8 / 38

1 gigabyte (GB) represents:

A) 10⁹ bytes

B) 10³ bytes

C) 10¹² bytes

D) 10⁶ bytes

9 / 38

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

A) milli

B) pico

C) micro

D) nano

10 / 38

0.01 meter is equivalent to:

A) 1 cm

B) 10 cm

C) 100 mm

D) 1 mm

11 / 38

Which prefix represents (10⁻⁶)?

A) nano

B) micro

C) milli

D) pico

12 / 38

Which is the correct order from smallest to largest?

A) milli < micro < nano < pico

B) micro < milli < nano < pico

C) pico < nano < micro < milli

D) nano < pico < milli < micro

13 / 38

5000 m is equal to:

A) 500 km

B) 5 km

C) 50 km

D) 0.5 km

14 / 38

Which prefix is used for (10⁻²)?

A) milli

B) micro

C) centi

D) deci

15 / 38

1 millisecond (ms) equals:

A) 10⁻¹² s

B) 10⁻³ s

C) 10⁻⁹ s

D) 10⁻⁶ s

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Which is correct about SI prefixes?

A) They modify magnitude only

B) They remove units

C) They change the physical quantity

D) They replace base quantities

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1 cm equals:

A) 10⁻¹ m

B) 10⁻² m

C) 10⁻³ m

D) 10⁻⁴ m

18 / 38

Which is largest?

A) 1 mm

B) 1 μ m

C) 1 cm

D) 1 nm

19 / 38

2 km is equal to:

A) 200 m

B) 2000 m

C) 20,000 m

D) 0.2 m

20 / 38

Which prefix is NOT a multiple of base units?

A) kilo

B) milli

C) mega

D) giga

21 / 38

1 terabyte (TB) equals:

A) 10¹² bytes

B) 10⁹ bytes

C) 10¹⁵ bytes

D) 10⁶ bytes

22 / 38

0.000001 m is written as:

A) 1 pm

B) 1 mm

C) 1 μ m

D) 1 nm

23 / 38

Which is correct conversion?

A) 1 m = 100 cm

B) 1 m = 1000 mm

C) 1 m = 10 cm

D) 1 m = 1000 cm

24 / 38

Which prefix is used for (10³)?

A) centi

B) kilo

C) mega

D) milli

25 / 38

Which is correct descending order of magnitude?

A) milli > kilo > mega > giga

B) giga > mega > kilo > milli

C) mega > kilo > giga > milli

D) kilo > giga > mega > milli

26 / 38

1 mm equals:

A) 10⁻³ m

B) 10⁻² m

C) 10⁻⁴ m

D) 10⁻¹ m

27 / 38

Which prefix is closest to atomic scale?

A) kilo

B) nano

C) micro

D) milli

28 / 38

3 × 10³ m is equal to:

A) 0.3 km

B) 300 km

C) 3 km

D) 30 km

29 / 38

Which statement is correct?

A) Prefixes remove measurement errors

B) Prefixes only modify magnitude

C) Prefixes change units completely

D) Prefixes replace SI units

30 / 38

Which is smallest unit?

A) 1 nm

B) 1 μ m

C) 1 mm

D) 1 cm

31 / 38

1000 m equals:

A) 10 km

B) 1 km

C) 0.1 km

D) 100 km

32 / 38

Which prefix is used for very large astronomical distances?

A) kilo

B) tera

C) milli

D) mega

33 / 38

1 μ m is equal to:

A) 0.001 m

B) 0.0000001 m

C) 0.000001 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) both are equal

D) centi = 10⁻², milli = 10⁻³

35 / 38

Which prefix is used in computer memory?

A) kilo, mega, giga, tera

B) pico, nano, micro

C) centi, deci, milli

D) milli, micro, nano

36 / 38

Which is correct scientific interpretation?

A) Prefixes change physics laws

B) Prefixes replace measurements

C) Prefixes remove units

D) Prefixes simplify numerical representation

37 / 38

Which is correct conversion?

A) 1 cm = 10⁻² m

B) 1 cm = 10⁻¹ m

C) 1 cm = 10⁻⁴ m

D) 1 cm = 10⁻³ m

38 / 38

Which is correct statement about SI prefixes?

A) They are independent units

B) They replace base quantities

C) They remove units

D) They are multipliers of base units

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