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QAIPMT-2008-Ph-2246: NEET 2008 Physics - Class 12 AIPMT-2008-Ph-2246 Solution: On a new scale of temperature (which is linear) and called the…
On a new scale of temperature (which is linear) and called the W scale the freezing and boiling points of water are and respectively. What will be the temperature on the new scale corresponding to a temperature of on the Celsius scale?
Multiple Choice Options
- A 12.6 min
- B 4.2 min
- C 6.3 min
- D 8.4 min
Step-by-Step Verified Solution
Power = 220 V _ 4 A = 880 watts. = 880 J/s.
Heat needed to raise the temperature of 1 kg water through 80�C
= ms. _ T _ 4.2 J/cal
= 1000 g _ 1 cal/g _ 80 _ 4.2 J/cal.
_ Time taken = 1000 _ 1 _ 80 _ 4.2 880 = 336 _ 10 3 880
= 382 s = 6.3 min.