UNIZIK Physics 2018/2019 - Model 1 Past Questions

An electric motor converts

The region around a magnet in which magnetic force can be experienced is known as

The quality of a note depends on its

Refraction of light differs from reflection in that, in refraction:
I. at least two media are involved.
II. there is change in the direction of the ray.
III. the speed of the ray changes.
Which of the statement(s) is/are correct?

A copper wire was subjected to a tensile stress of 7.7 x 10⁷Nm². Calculate the tensile strain of the wire. [Young modulus = 1.1 x 10¹¹Nm^-1

A motorist travelling at 72kmh^-1 had his eyes shut for 0.4s during a hard sneeze. Calculate the distance covered by him during this time interval.

In an a.c circuit, when the supply voltage frequency is equal to the resonant frequency, the current

A wire of cross-sectional area 0.60mm² has a resistivity 7.2 × 10^-7Ωm. Calculate the length of wire that will have a resistance of 3Ω.

Which of the following could be effectively used to reduce friction?

A fish inside a pond appears to be at a depth of 1.5m when viewed vertically from above. The refractive index of the water in the poind is 1.3. Calculate the apparent displacement of the fish.