Physics 2005 Waec Past Questions and Answers

Question 16 :

• WAEC 2005

Which of the following quantities has the same unit as energy?

A. Power
B. Work
C. Force
D. Momentum

Question 17 :

• WAEC 2005

Which of the following source of energy is renewable?

A. Sun
B. Petroleum
C. Coal
D. Uranium

Question 18 :

• WAEC 2005

The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate the temperature in degrees Celsius when the thermometer reads 45mm

A. 10.0^oC
B. 15.0^oC
C. 20.0^oC
D. 30.0^oC

Question 19 :

• WAEC 2005

A body of mass m, has a specific heat capacity s, and a heat capacity c. If the temperature of the body changes by \(\theta^oC\), Which of the following equation is correct?

A. Ms\(\theta\) = mv^-1
B. Ms = C
C. Ms = s\(\theta\)
D. Ms = c\(\theta\)

Question 20 :

• WAEC 2005

An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5^oC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]

A. 1100Jkg^-1K^-1
B. 320Jkg^-1K^-1
C. 200Jkg^-1K^-1
D. 176Jkg^-1K^-1