Physics chapter #1-a Measurements mcqs 2019-20 | paf , army, navy etc

CHAPTER # 1: MEASUREMENTS

1. The branch of physics which deals with the ultimate particles of which the matter is composed is:
a) Plasma physics
b) Atomic physics
c) Nuclear physics
d) Particle physics

2. The branch of physics which deals with atomic nuclei 
is called 
a) Acoustics
b) Thermodynamics
c) Magnetism
d) Nuclear physics

3. Silicon is abundantly obtained from:
a) Water
b) Metal
c) Sand
d) Stones

4. The number of base units are:
a) Three
b) Five
c) Seven
d) Nine

5. Which of the following is a derived quantity:
a) Force
b) Mass
c) Length
d) Time

6. Which of the following is SI base unit?
a) gram
b) slug
c) Newton
d) kilogram

7. Which one of the following is not a unit of length:
a) Angstrom
b) Micron
c) Radian
d) Light year

8. Which is not a base unit in SI units?
a) Kilogram
b) Joule
c) Ampere
d) Kelvin

9. An example of derived unit is
a) Candela
b) Ampere
c) Coulomb
d) Mole

10. Candela is the SI unit of 
a) Charge
b) Luminous intensity
c) Power
d) Refractive index

11. An alternate unit to kgms-¹ is
a) Js
b) Ns
c) Nm
d) N

12. The SI units of pressure in terms of base units are
a) kgm-¹s-²
b) kgm-¹s²
c) kgm-²s-¹  
d) none


13. The SI unit of plane angle is 
a) Steradian
b) Radian
c) Degree
d) Candela

14. Steradian is the angel which lies in:
a) One dimension
b) Two dimensions
c) Three dimensions
d) None

15. The SI unit of the solid angle is 
a) Degree
b) Steradian
c) Revolution
d) Radian

16. The solid angle subtended at the center of sphere by an area of its surface equal to the square of radius of the sphere is called:
a) Degree
b) Radian
c) Minute
d) Steradian

17. SI unit of pressure is 
a) Nm-¹
b) Nm-²
c) Nm²
d) none

18. Which is a derived unit:
a) Candela
b) Ampere
c) Kelvin
d) Newton

19. The unit of force is________ and its symbol is 
_______ which is the correct pair?
a) Newton, n
b) Newton, N
c) newton, n
d) newton , N

20. Which one is the correct representation of the unit of 
pressure?
a) Newton/Meter²
b) newton/meter²
c) Newton/meter²
d) Newton/Meter2²