UNIZIK Physics 2017/2018 Day 1 Past Questions

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

Three 40 resistors connected in parallel have a potential difference of 16V applied across them. What is the total current in the circuit?

A.12A
B.8A
C.10A
D.14A

In a hydraulic press, the pump piston exerts a pressure of 100Pa on the liquid. What force is extended in the second piston of cross-sectional area 3m²?

A.200N
B.100N
C.150N
D.300N

The pressure of one mole of an ideal gas of volume 10^-2m² at a temperature of 27°C is

A.2.24 x 10⁴ Nm^-2
B.2.24 x 10⁵ Nm^-2
C.2.49 x 10⁵ Nm^-2
D.2.49 x 10⁴ Nm^-2

Which of the following has no effect on radiation?

A.density
B.temperature
C.nature of the surface
D.surface area

The wavelength of a wave traveling with a velocity of 420m/s is 42m. What is its period?

A.1.0s
B.0.1s
C.0.5s
D.1.2s

The small droplet of water that forms on the grass in the early hours of the morining is

A.dew
B.mist
C.fog
D.hail

Shadows and eclipse result from the

A.refraction of light
B.rectilinear propagation of light
C.dcfraction of light
D.reflection or light

An object of mass 2kg moves with a velocity of 10m/s round a circle of radius. Calculate the centripetal force on the object

A.50N
B.40N
C.25N
D.100N

A boy sits in a train moving with a uniform speed on a straight track. If from his outstretched palm he gently tosses a coin vertically upwards, the coin will fall

A.in front of his palm
B.behind his palm
C.beside his palm
D.into his palm