UNIPORT Physics 2018/2019 Past Questions

Practice each question, then open it to see the full details.

Longitudinal waves do not exhibit:

A.Refraction
B.Reflection
C.Diffraction
D.Polarization

A pure musical torte causes a thin wooden panel to vibrate. This is an example of:

A.An overtone
B.Harmonics
C.Resonance
D.Interference

Which of the following instruments has a pure tone?

A.Guitar
B.Vibrating string
C.Tuning fork
D.Siren

When an object is placed between the principal focus and the optical centre of a convex lens. it could be used as ___.

A.simple microscope
B.reflecting lens
C.compound microscope
D.projector

If the temperature of a small quality of water in a closed container is gradually increased from 0°C to 40°C then the density of the water within this range.

A.Increases for a while and then decreases
B.Decreases for a while and then increases
C.Increases gradually
D.Decreases gradually
E.remains the same

The pressure P, volume V and absolute temperature T of a given mass of an ideal gas change simultaneously. Which of the following equations is correct about the gas?

A.PV = constant/T
B.P/T = constant
C.P/V = constant/T
D.1/T = constant/PV

If C is the thermal capacity of a material of mass m and S is its specific heat capacity, then

A.C = s/m
B.S = Cm
C.C = Sm
D.DS = m/s

A black car can be more uncomfortably hot on a warm day than a white car because

A.it is hot on a warm day
B.a black object is a better absorber of heat
C.black cars have heaters installed in them
D.white cars have air conditioning systems installed in them

A ball is thrown up into the air. At the highest point of its trajectory the ball:

A.is accelerating downwards
B.has zero acceleration
C.is accelerating upwards
D.is still moving upwards

A man walks 1 km due east and then 1 km due north. His displacement is

A.1 km N15°E
B.1 km N30°E
C.-√2 km N45°F
D.2 km N75°E