PPSC Lecturer Physics Solved mcqs

The SI unit of power is:

Natural units are physical units of measurement based only on universal physical constants. Which of the following is a natural unit?

The dimensions of Coulomb constant (k) are:
(a) Q−1 M−2 L−2 T−2
(b) Q−2 M L3 T−1
(c) Q−1 ML2 T−2
(d) Q−2 ML−3 T−2

The physics underlying the operation of a refrigerator most closely resemble the physics underlying:

Which instrument measures the magnification of a telescope?

The SI derived unit of dose equivalent is:

The time required for a charged particle to make a complete revolution in a magnetic field does not depends upon:

Which of the following are defects in lenses?

The dimension of gravitational constant G are:
(a) M−1 L−1 T−1
(b) M−1 L−2 T−2

c) M−1 L−3 T−2
(d) M−1 L−2 T−3

The energy of the molecular motion appears in the form of:

A certain wire has resistance “R” the resistance of another wire, identical with the first except for having twice its diameter is:

Which mirror be used for obtaining a  parallel beam of light from a small lamp?

What is defined as the ratio of image height to the object height?

When diamagnetic substance is inserted in a current carrying coil, the magnetic field:

Which term is used for human eye defect “near sightedness”?

One electronvolt (ev) is a unit of energy equal to approximately:

(a) 1.602 × 10−9 J
(b) 1.602 × 10−19 J
(c) 1.602 × 10−29 J
(d) 1.609 × 10−39 J

The law that governs the force between electric charges bears the name of:

Which principle states that the path taken by a ray of light between any two points in a system is always the path that takes the least time (or the shortest optical path)?

Which of the following are optical telescopes?

A current is following north along a power line. The direction of the magnetic field above it, neglecting the earth’s field is:

The electron volt is a unit of:

The time required to charge a capacitor depends upon:

Which law gives the angles for coherent and incoherent scattering form a crystal lattice?

The smallest sub-division of a compound that exhibit its characteristics properties is called:

The separation between the plates of parallel plate capacitor whose original capacitance is now: