A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of heat required to melt it completely. [specific heat capacity of the solid =2.0KJ kg-1K-1][Specific latent heat of fusion of solid =1.0 KJ kg-1]

by | Mar 13 | Physics WAEC | 0 comments

A. 1500J
B. 10000J
C. 10500J
D. 15000J

Correct Answer: Option C

C. 10500J

Explanation

Q = ML + Cθ

= 0.5 x 1000 + 0.5 x 2000 x 10

= 10500

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