Question 266:

• JAMB 1983

The electrochemical equivalent of a metal is 0.126 x 10^-6 kgC^-1. The mass of the metal that a current of 5A will deposit from a suitable bath in 1 hour is

A. 0.0378 x 10 ^-3kg
B. 0.227 x 10 ^-3kg
C. 0.378 x 10 ^-3kg
D. 0.595 x 10 ^-3kg
E. 2.268 x 10 ^-3kg

Question 267:

• JAMB 1983

Ripples on water are similar to light waves in that they both

A. Have the same wavelength
B. Are longitudinal
C. Cannot be reflected
D. Travel at the same speed
E. Can be refracted and diffracted

Question 268:

• 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 269:

• JAMB 1983

Of the following derived units, the one that is not a unit of power is

A. Joule/second
B. Ampere volt
C. Ampere²volt
D. Volts²/ohm

Question 270:

• JAMB 1983

a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds?

A. 4ms^-1
B. 10ms^-1
C. 20ms^-1
D. 50ms^-1
E. 80ms^-1