Physics 2000 Jamb Past Questions and Answers

Question 1 :

• JAMB 2000

When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will

A. Increase
B. Decrease
C. Remain the same
D. Increase then decrease

Question 2 :

• JAMB 2000

When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will

A. Increase
B. Decrease
C. Remain the same
D. Increase then decrease

Question 3 :

• JAMB 2000

I. Its velocity is constant
II. No work is done on the body
III. It has constant acceleration directed away from the centre
IV. The centripetal force is directed towards the centre
Which combination of the above is true of a body moving with constant speed in a circular track?

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

Question 4 :

• JAMB 2000

The velocity ratio of a machine is 5 and its efficiency is 75%. What effort would be needed to lift a load of 150N with the machine?

A. 20N
B. 30N
C. 40N
D. 50N

Question 5 :

• JAMB 2000

At a fixed point below a liquid surface, the pressure downwards is P1 and pressure upwards is P2. It can be deduced that

A. P₁ > P₂
B. P₁ ≥ P₂
C. P₁ < P₂
D. P₁ = P₂