Applied Physics important Objective questions answers – MCQs
1. Origin is the point of intersecting of ______ coordinate axes:
A. One
B. Two
C. Three
D. Four
2. According to equation of continuity, when water falls its speed _______, while its cross sectional area decreases:
A. Increases
B. Decreases
C. Remain same
D. Different
3. During measurement of quantities how many errors occurs:
A. 5 types
B. 4 types
C. 3 types
D. 2 types
4. Mass energy of an electron in rest is:
A. 1.02 MeV
B. 0.511KeV
C. 0.511 MeV
D. 2.02 MeV
5. A unit vector having _______ only:
A. Magnitude
B. Distance
C. Displacement
D. None of the above
6. If layers of fluid have no frictional force between them, then it is known as:
A. Viscous
B. Non-viscous
C. Incompressible
D. Both a and b
7. Which quantities are used to describe laws of physics:
A. Atomic quantities
B. Nuclear quantities
C. Mechanical quantities
D. Physical quantities
8. In cathode ray oscilloscope, spots are formed on screen having:
A. Anode
B. Cathode
C. Grid
D. Matrix
9. If value of moment arm is zero, then torque produced will be:
A. 1
B. 0
C. Doubled
D. Decreased
10. Venturi relation is one of applications of:
A. Equation of continuity
B. Bernoulli’s equation
C. light equation
D. Speed equation
11. Units given by system international for measuring physical quantities are called:
A. SI units
B. IS units
C. S units
D. I units
12. Magnetic field outside a solenoid is:
A. Zero
B. Strong
C. Infinite
D. Negligible