11. The term ‘dimension’ in physics refers to:

• a) The size of an object
• b) The measure of physical quantity
• c) The units of measurement
• d) The nature of a physical quantity
• Answer: d) The nature of a physical quantity

12. The SI unit of work is:

• a) Newton
• b) Joule
• c) Watt
• d) Erg
• Answer: b) Joule

13. The least count of a vernier caliper is typically:

• a) 0.01 mm
• b) 0.1 mm
• c) 0.2 mm
• d) 0.5 mm
• Answer: a) 0.01 mm

14. Which of the following is a derived quantity?

• a) Time
• b) Length
• c) Velocity
• d) Mass
• Answer: c) Velocity

15. The measurement of mass in the SI system is given by the unit:

• a) Kilogram
• b) Gram
• c) Pound
• d) Ounce
• Answer: a) Kilogram

16. The SI unit of frequency is:

• a) Hertz
• b) Joule
• c) Newton
• d) Ohm
• Answer: a) Hertz

17. The dimensional formula of force is:

• a) [M L T^-2]
• b) [M L^2 T^-1]
• c) [M L T^-1]
• d) [M T^-2]
• Answer: a) [M L T^-2]

18. Which of the following is a non-SI unit of time?

• a) Second
• b) Minute
• c) Hour
• d) Day
• Answer: d) Day

19. What is the SI unit of temperature?

• a) Celsius
• b) Fahrenheit
• c) Kelvin
• d) Rankine
• Answer: c) Kelvin

20. The smallest division on a standard ruler is:

• a) 0.1 cm
• b) 0.01 cm
• c) 0.05 cm
• d) 1 mm
• Answer: d) 1 mm