What is the mass of a material, whose specific heat capacity is 400 J /( kg ,^ C ) for a rise in temperature from 15 ,^ C to 25 ,^ C , when heat received is 20 kJ ?

NDA 2022 Physics question

What is the mass of a material, whose specific heat capacity is for a rise in temperature from to , when heat received is ?

Answer: (D)

Heat received . Here , and . So $m

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Question ID VK-032042