Physics 9 Chapter 1 - Physical Quantities and Measurements - 13

Physics 9 Chapter 1 - Physical Quantities and Measurements - 13

1. What is the form called in which a number is expressed as some power of ten multiplied by a number between 1 and 10?

a) General form
b) Both b and c
c) Scientific notation
d) Standard form

2. What is the standard form of 0.00045?

a) 4.5*10^-4
b) 45*10^-4
c) 0.45*10^-4
d) None of these

3. How many kilometres sun is away from the earth?

a) 155 billion
b) 150 billion
c) 155 million
d) 150 million

4. Which of the following provides information about stars?

a) None of these
b) Hubble space telescope
c) Five star telescope
d) Dual telescope

5. What are the instruments called that are used to measure various physical quantities?

a) Measuring instruments
b) All are correct
c) Physical instruments
d) Chemical instruments

6. Sundial is a .....................measuring instrument?

a) Time
b) Current
c) Temperature
d) Pressure

7. Which of the following was measured by water clock in the past?

a) Wind
b) Temperature
c) Pressure
d) Time

8. Sundial, water clock and other time measuring devices were used around ..................AD?

a) 1300
b) 1323
c) 1230
d) 1200

9. Which of the following is/are the measuring instrument(s)?

a) Metre rule
b) Vernier callipers
c) All are measuring instruments
d) Screw gauge

10. Which of the following is measured by metre rule?

a) Temperature
b) Current
c) Pressure
d) Length

11. What is the length of metre rule?

a) 10m
b) 100m
c) 1m
d) 10cm

12. Into how many small divisions, 1cm is divided to become 1mm?

a) 0.1
b) 10
c) 0.10
d) 100

13. What is the smallest reading that can be taken using a metre rule?

a) 1mm
b) 1cm
c) 0.1mm
d) None of these

14. What is the least count of a metre rule?

a) 1cm
b) 0.001cm
c) 1mm
d) 0.1mm

15. While measuring length, or distance, eye must be kept ..........................above the reading point?

a) Vertically
b) Parallel
c) Left
d) Horizontally

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