An immersion heater is rated 120W. How long does it take the heater to raise the temperature of 1.2kg of water by 15°C. (Assuming heat lost to the surrounding is negligible. Specific heat capacity of water = 4200 Jkg‾¹K‾¹C)

by | May 23 | Physics WAEC | 0 comments

A. 65.0 minutes
B. 60.0 minutes
C. 52.5 minutes
D. 10.5 minutes

Correct Answer: Option D

C. 52.5 minutes

Users Also Read These:

Copyright warnings! Do not copy.