Chapter 5: Physical Quantities & Measurement Physics Mcqs for High School - Grade 9 - Set 3

1)   The least count of screw gauge is

a. 0.1 mm
b. 0.01 mm
c. 0.2 mm
d. 0.02 mm
Answer  Explanation 

ANSWER: 0.01 mm

Explanation:
No explanation is available for this question!


2)   Non-zero digits are always

a. significant
b. non-significant
c. worthless
d. none of above
Answer  Explanation 

ANSWER: significant

Explanation:
No explanation is available for this question!


3)   The quantities based on which other quantities are expressed are called

a. prefixes
b. base quantities
c. derived quantities
d. quartile quantities
Answer  Explanation 

ANSWER: base quantities

Explanation:
No explanation is available for this question!


4)   The study of the production, properties of the iconic state of matter is called

a. atomic physics
b. plasma physics
c. mechanics
d. nuclear physics
Answer  Explanation 

ANSWER: plasma physics

Explanation:
No explanation is available for this question!


5)   To measure the time interval of an event, we use

a. screw gauge
b. physical balance
c. Vernier calipers
d. stop watch
Answer  Explanation 

ANSWER: stop watch

Explanation:
No explanation is available for this question!


6)   A modified type of beam balance used to measure small masses by comparison with greater accuracy is known as

a. Vernier calipers
b. stop watch
c. physical balance
d. screw gauge
Answer  Explanation 

ANSWER: physical balance

Explanation:
No explanation is available for this question!


7)   Amount of a substance in terms of numbers is measured in

a. gram
b. kilograms
c. mole
d. newton
Answer  Explanation 

ANSWER: mole

Explanation:
No explanation is available for this question!


8)   While measuring length the eye must be kept

a. above the scale
b. at an acute angle
c. horizontal with scale
d. none of above
Answer  Explanation 

ANSWER: above the scale

Explanation:
No explanation is available for this question!


9)   To measure small lengths such as the diameter of a wire, the thickness of a metal sheet, etc. We use

a. physical balance
b. screw gauge
c. Vernier calipers
d. stop watch
Answer  Explanation 

ANSWER: screw gauge

Explanation:
No explanation is available for this question!


10)   The study of the nature of heat, modes of transfer and effects of heat is studied under the branch named as

a. mechanics
b. Light
c. heat
d. atomic physics
Answer  Explanation 

ANSWER: heat

Explanation:
No explanation is available for this question!


11)   The prefixes are useful to express

a. very small quantity only
b. very large quantity only
c. derived units
d. very small and large quantities
Answer  Explanation 

ANSWER: very small and large quantities

Explanation:
No explanation is available for this question!


12)   By using prefixes, we can write 32 × 10-10 kg as

a. 0.32 µg
b. 32 µg
c. 3.2 µg
d. 320 µg
Answer  Explanation 

ANSWER: 3.2 µg

Explanation:
No explanation is available for this question!


13)   The significant digits in 0.058 are

a. 3
b. 4
c. 2
d. 0
Answer  Explanation 

ANSWER: 2

Explanation:
No explanation is available for this question!


14)   The study of internal structure of earth is

a. geophysics
b. electricity and magnetism
c. mechanics
d. thermodynamics
Answer  Explanation 

ANSWER: geophysics

Explanation:
No explanation is available for this question!


15)   The units used to measure derived quantities are known as

a. square units
b. derived units
c. base units
d. scalar units
Answer  Explanation 

ANSWER: derived units

Explanation:
No explanation is available for this question!


16)   The study of the structure and properties of matter is called

a. atomic physics
b. mechanics
c. plasma physics
d. geophysics
Answer  Explanation 

ANSWER: atomic physics

Explanation:
No explanation is available for this question!


17)   The international system of units is commonly referred as

a. SI
b. ISU
c. SU
d. IU
Answer  Explanation 

ANSWER: SI

Explanation:
No explanation is available for this question!


18)   We study the physical aspects of sound waves, their production, properties and applications under the branch named as

a. sound
b. atomic physics
c. plasma physics
d. heat
Answer  Explanation 

ANSWER: sound

Explanation:
No explanation is available for this question!


19)   The significant digits in 275.00 are

a. 2
b. 3
c. 5
d. 4
Answer  Explanation 

ANSWER: 5

Explanation:
No explanation is available for this question!


20)    The least count of the screw gauge is

a. 1 mm
b. 0.5 mm
c. 0.01 mm
d. 0.001 mm
Answer  Explanation 

ANSWER: 0.01 mm

Explanation:
No explanation is available for this question!