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A 90-W immersion heater is used to supply energy for five minutes. The...

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Question 603
A
0.5Jg-1
B
2.5Jg-1
C
15.0Jg-1
D
450.0Jg-1
E
150Jg-1
Explanation
Pt = mL

L = \(\frac{pt}{m} = \frac{90 \times 5}{180}\)

= 2.5

Correct option: B

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