Physics 1996 Waec Past Questions and Answers

Question 11 :

• WAEC 1996

A body of mass 2kg is suspended from the ceiling of a lift with a light inextensible string. lf the lift moves upwards with acceleration of 2ms^-2, calculate the magnitude of the tension in the string (g = 1Oms^-2)

A. 24N
B. 20N
C. 16N
D. 4N
E. 0N

Question 12 :

• WAEC 1996

A stationary object of mass 4kg is set in motion by a net force of 5ON. If the object attains is speed of 5ms^-1 in time. Calculate the value of t.

A. 0.20s
B. 0.40s
C. 0.63s
D. 0.80s
E. 1.30s

Question 13 :

• WAEC 1996

Two simple pendula x and y make 400 and 500 oscillations respectively in equal time. If the period of oscillation of x is 1.5 seconds, what is the period of oscillation of y?

A. 0.53s
B. 0.83s
C. 1.20s
D. 1.50s
E. 1.88s.

Question 14 :

• WAEC 1996

A platinum-resistance thermometer has a resistance of 5Ω at 0°C and 9Ω at l00°C. Assuming that resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 45°C.

A. 13.9 Ω
B. 8.9 Ω
C. 6.8 Ω
D. 3.2 Ω
E. 1.8 Ω

Question 15 :

• WAEC 1996

The linear expansivity of a metal P is twice that of another metal Q. When these materials are heated through the same temperature change, their increase in length is the same. Calculate the ratio of the original length of P to that of Q.

A. 1:4
B. 1:2
C. 2:1
D. 4:1
E. 6:1