PHY101 Final Term MCQs by VU Topper RM

Q1. Vu-Topper RM (1 marks)

The image produced by a convex mirror of an erect object in front of the mirror is always: A. Real, erect, and larger than the object B. Real, erect, and smaller than the object C. Virtual, erect, and larger than the object

D. Virtual, erect, and smaller than the object

Q2. Vu-Topper RM (1 marks)

In some movies, you sometimes see an actor looking in a mirror and you can see his face in the mirror. During the filming of this scene, what does the actor see in the mirror?

1. His face
2. Your face
3. The director's face
4. The movie camera

Correct answer: The movie camera

Q3. Vu-Topper RM (1 marks)

A femtometer is: A. 10-9 m B. 10-12 m

C. 10-15 m

D. 10-18 m

Q4. Vu-Topper RM (1 marks)

The "strength" of a lens is measured in _________. A. Meters B. Diopters C. Provatans

D. Lense meter

Q5. Vu-Topper RM (1 marks)

When an object (iron/tungsten) is heated, it emits light. It emits infrared (IR) light when it is heated at a temperature __________.

A. Below 800 degree C

B. Above 2500 degree C C. Between 800 degree C to 1600 degree C D. Between 1600 degree C to 2500 degree C

Q6. Vu-Topper RM (1 marks)

The reason there are two slits, rather than one, in a Young’s experiment is: A. To increase the intensity B. To create a path length difference C. One slit is for frequency, the other for wavelength

D. One slit is for Electric fields , the other is for Magnetic fields

Q7. Vu-Topper RM (1 marks)

An electron is moving at 0.6c. If we calculate its kinetic energy using (1/2) mv2, we get a result that is: A. Just right B. Just half enough

C. About 28% too low

D. Twice the correct value

Q8. Vu-Topper RM (1 marks)

The theoretical upper limit for the frequency of electromagnetic waves is:

A. There is no upper limit

B. Both C. None of these D. Just slightly greater than that of red light

Q9. Vu-Topper RM (1 marks)

One revolution is the same as: A. 1 rad B. 57 rad C. π/2 rad

D. 2π rad

Q10. Vu-Topper RM (1 marks)

For a body to be in equilibrium under the combined action of several forces: A. All the forces must be applied at the same point B. All the forces must be applied at the same point C. All of the forces form pairs of equal and opposite forces

D. Any two of these forces must be balanced by a third force

Q11. Vu-Topper RM (1 marks)

Capacitors C1 and C2 are connected in series. The equivalent capacitance is given by A. C1/C2 B. 1/(C1 + C2)

C. C1C2/(C1 + C2)

D. (C1 + C2)/C1C2

Q12. Vu-Topper RM (1 marks)

If the potential difference across a resistor is doubled: A. Only the current is halved B. Only the resistance is halved

C. Only the current is doubled

D. Only the resistance is doubled