Question 226:

• JAMB 1982

A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are

A. 0^o and 0^o
B. 60^o and 60^o
C. 90^o and 90^o
D. 90^o and 0^o
E. 0^o and 90^o

Question 227:

• JAMB 1982

The equation P^xV^yT^z = constant

A. X = 0, y = 0, z = 1
B. X = 1, y = 0, z = 0
C. X = 1, y = 1, z = 0
D. X = 1, y = 1, z = 1
E. X = 1, y = 1, z = -1

Question 228:

• JAMB 1982

The area under a force-distance graph represents

A. Acceleration
B. Velocity
C. Power
D. Work
E. Momentum

Question 229:

• JAMB 1982

A hot metal ball is suspended in the open air. As it cools it loses heat by

A. Conduction only
B. Convection only
C. Radiation only
D. Conduction and convection
E. Convection and evaporation

Question 230:

• JAMB 1982

The range of accommodation of a normal human eye is

A. 0m to 0.1m
B. 0m to 0.25m
C. 0.10m to 0.25m
D. 0.10m to infinity
E. 0.25m to infinity