JAMB Physics Past Questions & CBT Practice

A gas is cooled at a constant pressure from 57ºC was observed to shrink one-fifth (1\5) of its original volume of 2.00cm$^3$. Find its new temperature

1. A.-150$^o$C
2. B.-207$^0$C✓ Correct
3. C.-195$^0$C
4. D.-200$^0$C

The tangential force acting on an object that opposes it from sliding freely on the adjacent surface is called

1. A.Weight
2. B.Upthrust
3. C.Frictional force✓ Correct
4. D.Normal force

The emf of a cell is the potential difference across its terminals when it is in

1. A.series connection
2. B.closed circuit
3. C.open circuit✓ Correct
4. D.parallel connection

I. The colour of light depends on its frequency II. When white light is dispersed by a triangular prism, yellow is deviated more than green III. Rainbows are formed when rains fall heavily. Which of the above statements is/are correct about dispersion and colours?

1. A.I and III only
2. B.I only✓ Correct
3. C.II and III only
4. D.I and II only

Which of the following is better for measuring a very small resistance?

1. A.Voltmeter
2. B.Wheatstone bridge
3. C.rheostat
4. D.Potentiometer✓ Correct

What pressure would a 5000N weight of water exert at the bottom of a reservoir containing it if its length and breadth are 10m and 5m, respectively

1. A.200Pa
2. B.182Pa
3. C.100Pa✓ Correct
4. D.120Pa