BUK Physics 2020/2021 Past Questions

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

A 500Kg car was initially at rest traveled with an acceleration of 5ms^-2, what is its kinetic energy after 4s

A.2.5 x 10³J
B.10⁵J
C.5 x 10³J
D.5 x 10⁵J

Three 4 Ω resistors were connected in series by 'Tola while Ade connected the same set of resistors in parallel. The ratio of the value obtained by Ade to that obtained by 'Tola is:

A.1:2
B.1:9
C.1:10
D.1:5

Which of the following phenomena cannot be explained by the molecular theory of matter?

A.evaporation
B.expansion
C.conduction
D.radiation

A hydraulic press works on the principle of transmission of

A.force
B.energy
C.volume
D.pressure

Five 100-watt bulbs are put on for 45 days during which the home - owner is on vacation. If 1KW-hour of electricity costs N7.50, how much does it cost the home - owner?

A.N168.75
B.N90.00
C.N4050.00
D.N810.00

A gas has a volume of 100cm³ at 270°C. If it is heated to temperature T unit a final volume of 120 cm³ is attained. Calculate T.

A.33°C
B.60°C
C.87°C
D.114°C

I. They should be identical.
II. They should originate from the same source.
III. They should be coherent
IV. They should be monochromatic
From the statements above, the conditions for two waves to interfere are

A.II and III only
B.I III and IV only
C.I III and IV only
D.I, II, III and IV.

Which of the following statements is/are true of the law of universal gravitation?

A.Any two bodies attract each other with a force which is proportional to the difference of the masses
B.Any two bodies attract each other with a force which is inversely proportional to the square of the distance between them
C.Any two bodies attract each other with a force is proportional to the product of their masses and inversely proportional to the square of the distance between them
D.Any two bodies attract each other with a force which is directly proportional to the square of the masses

The unit of moment is ____.

A.N
B.M
C.NM
D.NS^-1

A bimetallic strip bends when heated because the metals __.

A.have different temperature
B.expand in opposite directions
C.expand by different amounts
D.becomes softer when heated and the weight causes the strip to bend