PHY101 Final Term MCQs by VUBuddy

PHY101 FINAL TERM MCQS FILE

1. The prefix mega means

• 102
• 109
• 10-3
• 10 6

2. Two bodies are falling with the negligible air resistance, side by side, by horizontal plane. If one of the bodies is given an additional horizontal acceleration during its decent it

• Strikes the plane at the same time as the other body
• Strikes the plane earlier than the other body
• Has the vertical component of its velocity altered
• Has the vertical component of its acceleration altered

3. An object moves in a circle at constant speed. The work done by the centripetal force is zero

• The displacement for each revolution is zero
• The average force each revolution is zero
• There is no friction
• The centripetal force is perpendicular to the velocity

4. Two bodies, A and B, have equal kinetic energies. The mass of A is nine times that of B. the ratio of A to that of B is:

• 1:9
• 1:3
• 1:1
• 3:1

5. In simple harmonic motion, the restoring force must be proportional to the;

• Amplitude
• Frequency
• Velocity
• Displacement

6. The second after an electric fan is turned of, the fan rotates at 300 rev/min. its angular acceleration is

• 3.14 red/s2
• 30 red/s2
• 30 rev/s2
• 50 rev/mins2

7. The center of gravity coincides with the center of mass

• Always
• Never
• If the center of mass is at the geometrical center of the body
• If the acceleration due to gravity is uniform over the body

8. The ultimate strength of a sample is the stress at which the sample

• Returns to its original shape when the stress is removed
• Remains underwater
• Breaks
• Bends 180

9. The unit of electric field are

• J/m
• J/(C.m)
• J/c
• J.c

10. If 500 of work is required to carry a charged particle between two points with a potential difference of 20V,the magnitude of the charge on the particle is

• 0.040C
• 12.5C
• 20C
• Cannot be computed unless the path is given\

11. Let Q denote charge, V denote potential difference, and U stored the energy. Of these quantities, capacitors in parallel must have the same

• Q only
• V only
• U only
• Q and U only

12. A magnetic field exerts a force on a charge particle

• Always
• Never
• If the particle is moving across the field lines
• If the particle is moving along the field lines

Q13. A capacitor is an LC oscillator has a maximum difference of 15V and a maximum energy of 360 µJ. at a certain instant the energy Is a capacitor is 40µJ. at that instant what is the end of introduced of inductor?

• Zero
• 5V
• 10V
• 15V

14. The unit of magnetic dipole moment are

• Ampere
• Ampere. meter
• Ampere. meter 2
• Ampere/meter

15. The relation n 1sinq1= n2sinq2 is known as____

• Gauss’s law
• Snell’s law
• Faraday’s law
• Fermat’s law

16. Following are the ways by which can light can interact with matter, except.