SPSC Lecturer Physics Past Paper MCQs with Answers for lecturer test preparation online.
SPSC Lecturer Physics Past Paper MCQs
If vector field A = (x+3y)i + (y-2z)j + (x+mz)k is solenoidal, then the value of m is:
A) 2
B) 3
C) -2
D) 0
The parameters that Kepler’s Law of period relates to?
A) The semi-minor axis and the time period
B) Eccentricity and the time period
C) The planet’s area of sweep and the time period
D) the semi-major axis and the time period
What happens when the stress applied to the body is increased beyond the maximum value and is removed after sometime?
A) The body will come back to its original position
B) The body will oppose the stress
C) The body becomes hot
D) The body cannot return to its original position
Which of the following is a four-level laser?
A) ND: YAG
B) Ruby laser
C) He-Ne laser
D) Semiconductor laser
A physical system undergoing forced vibration is called:
A) Free harmonic oscillation
B) Frequency harmonic oscillation
C) Driven harmonic oscillator
D) None of these
What is the effect of increasing the number of slits on the intensity of the Central maxima of diffraction pattern of a diffraction grating?
A) Intensity of central maxima will decrease
B) Intensity of central maxima will increase
C) There will not be any effect
D) Diffraction pattern will disappear
x—>Ni68/25+y Identify the missing nuclide in gamma decay.
A) O17/8
B) Po215/84
C) Fe55/22
D) Ni65/28
Einstein’s photoelectric equation is:
A) 1 / 2 m v2max = hν
B) hv = 2hv
C) hv=hve+(1 / 2 m v2) max
D) hv = hve/2
A vector field with a vanishing curl is called as:
A) Solenoidal
B) Irrotational
C) Rotational
D) Cycloldal
FCC lattice is the reciprocal lattice of the
A) BCC lattice
B) SC Lattice
C) HCP lattice
D) Both B and C
Find the maximum value of resolving power of a grating 3 cm wide having 5000 lines per cm, if the wavelength of light Used is 5890 A
A) 40000A
B) 45000A
C) 4500A
D) 5000A
Which of the following is not a postulate of Kinetic molecular theory of gases?
A) In gases there is a predominance of intermolecular energy
B) Collisions of gas molecules are elastic
C) All molecules have the same speed at diff temperatures
D) Do not exert the same pressure in all directions
How many fission take place per second in a 300 MW reactor, assuming each fission releases 200 MeV of energy?
A) 2.38 X 1018
B) 9.38 X 1018
C) 4.38 x 1018
D) 8.38 X 1018
During projectile motion, the horizontal component of velocity:
A) Changes with time
B) Becomes Zero
C) Remains constant
D) Increases with time
Soap film exhibits brilliant colours in sun light due to:
A) Dispersion of light
B) Interference of light
C) Diffraction of light
D) Scattering of light
The increase in the entropy means the increase in:
A) Disorder
B) Unavailability of energy
C) Randomness
D) All of these
The light of suitable frequency falling on metal surface ejects electrons, this phenomenon is called:
A) X-ray emission
B) Compton effect
C) Nuclear fission
D) Photoelectric effect
Which of the following series of H-spectrum lies in ultraviolet region
A) Lyman series
B) Balmer series
C) Paschen series
D) Bracket series
Choose the correct statement for a nuclear reactor:
A) Moderator slow down the neutron
B) Moderator bring the neutrons to rest
C) Moderator absorb the neutron
D) Moderator reflect the neutron
Average distance covered by a-particle in air before its ionizing power ceases is called its
A) Trajectory
B) Range
C) Firing level
D) Limit
The net electric field is zero:
A) Inside any conductor
B) Inside any conductor with a static charge
C) Inside any material, conductor or insulator, with a static charge
D) The electric field cannot be zero
An electric field exerts a torque on a dipole only if:
A) The field is parallel to the dipole moment
B) The field is negative
C) The field is perpendicular to the dipole moment
D) The field is positive
When N-type semiconductor is heated?
A) Number of electrons increases while that of holes decreases
B) Number of holes increases while that of electrons decreases
C) Number of electrons and holes remain same
D) Number of electron and holes increases equally
Which of these is the best description of a Zener diode
A) It operates in reverse region
B) It is a constant voltage device
C) It is a constant current device
D) All of these
Two charges are placed a certain distance apart in air. When a dielectric sheet is placed between them, the electrostatic force between them will
A) Decrease
B) Increase
C) Remain unchanged
D) Become zero
What is required in a fusion reactor, in order to over come the electrostatic repulsive force between nuclides?
A) Very high pressure
B) Very high temperature
C) Very small volume
D) All of these
The period of the Physical Pendulum is
A) T=2π√I/mgd
B) T=2π√1/d
C) T=2π√Lg
D) All of these
Over-damping results in
A) Slower return to equilibrium
B) Faster turn to equilibrium
C) Equilibrium ever achieved
D) Unrhythmic return to equilibrium
Two spheres of same material have radii R1 and R2 They are heated to same temperature and kept in same enclosure at low temperature. Their rates of loss of heat are in the ratio:
A) R21/R22
B) R1/R2
C) R22/R21
D) R2/R1
Which of the following statement is wrong?
A) Rough surfaces are better radiators than smooth surfaces
B) Highly polished mirror surfaces are very good radiators
C) Black surfaces are better absorbers than white one
D) Black surfaces are better radiators then white ones
The Antonym of “Heartfelt” is
A) Loving
B) Unhealthy
C) Insincere
D) Humorous
The train went—–the tunnel.
A) From
B) Under
C) Through
D) To
The Synonym of “Embezzle” is:
A) Remunerate
B) Clear
C) Balance
D) Misappropriate
The Antonym of “Stale” is:
A) Old
B) Tale
C) Fresh
D) Break
The professor told her student about the project months in advance so that they would have —– time to complete work.
A) chronological
B) constant
C) Insufficient
D) ample
I am worried ——– the exam.
A) in
B) about
C) on
D) of
There is no point —— arguing.
A) to
B) over
C) in
D) on
He —– daily for a year now.
A) exercises
B) was exercising
C) has been exercising
D) exercising
If you had followed the rules, you —– disqualified.
A) will not be
B) would not be
C) will not have been
D) would not have been
The quality of public healthcare — on the amount of money allocated to it:
A) depends
B) dependent
C) depending
D) depend
Read More: All SPSC Past Papers for Sindh Public Service Commission test preparation online.