Jamb Physics 1993 Past Questions and Answers

Question 41:

• JAMB 1993

In the fig above,A lever of length 200m is used to lift a load of mass 180kg. The pivot at P is 20m from the load. what minimum force F must be applied at the end of the lever [g = 10ms^-2]

A. 9N
B. 18N
C. 20N
D. 200N

Question 42:

• JAMB 1993

Two mirrors M1 and M2 are inclined at right angles as shown above calculate the angle of reflection of the ray of light at M2

A. \( 30^{\circ} \)
B. \( 45^{\circ} \)
C. \( 60^{\circ} \)
D. \( 90^{\circ} \)

Question 43:

• JAMB 1993

The current I in the fig above is

A. 4.00A
B. 1.30A
C. 0.80A
D. 0.75A