Determination of heat capacity of substances - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1978

A potential difference of 6v is used to produce a current of 5A for 200s through a heating coil. The heat produced is

A. 4800 cal
B. 6000 cal
C. 2400J
D. 240k cal
E. 6000J

Question 3:

• JAMB 1990

1kg of copper is transferred quickly from boiling water to a block of ice. Calculate the mass of ice melted, neglecting heat loss. [specific heat capacity of copper 400Jkg^-1K^-1 and latent heat of fusion of ice 333 x 10³Jkg^-1]

A. 60g
B. 67g
C. 120g
D. 133g

Question 4:

• JAMB 2003

A 2000W electric heater is used to heat a metal object of mass 5kg initially at 10oC. If a temperature rise of 30oC is obtained after 10min, the heat capacity of the material is

A. 6.0 x 10⁴J^oC^-1
B. 4.0 x 10⁴J^oC^-1
C. 1.2 x 10⁴J^oC^-1
D. 8.0 x 10⁴J^oC^-1

Question 5:

• JAMB 2008

A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is?

A. 850 JK^-1
B. 750 JK^-1
C. 650 JK^-1
D. 500 JK^-1