## 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:**

B. Strong

C. Infinite

D. Negligible