Archimedes' principle and law of floatation and applications - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1983

A piece of wood is floating on water. The forces acting on the wood are

A. Upthrust and reaction
B. Weight and reaction
C. Weight and upthrust
D. Upthrust and viscousity
E. Weight and viscousity

Question 3:

• JAMB 1983

Which of the following may be used to determine the relative humidity in a physics laboratory
I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer

A. I Only
B. II and III Only
C. II Only
D. III Only
E. II,IIIand IV Only

Question 4:

• JAMB 1989

A piece of wood of mass 40g and uniform cross-sectional area of 2cm² floats upright in water. The length of the wood immersed is

A. 30cm
B. 40cm
C. 20cm
D. 2cm

Question 5:

• JAMB 1991

In which of the following is surface tension important?

A. The floating of a ship in water
B. The floating of a dry needle in water
C. The floating of a baloon in air
D. The diffusion of sugar solution across a membrane