Newton's Law of Cooling

JEE Main Physics · Heat Transfer · 6 questions, latest first

• A cup of coffee cools from 90^° C to 80^° C in t minutes when the room temperature is 20^° C. The time taken by the similar cup…202529 January, Shift 2 · Q30
• The temperature of a body in air falls from 40^° C to 24^° C in 4 minutes. The temperature of the air is 16°C. The temperature of…202524 January, Shift 2 · Q31
• A body cools from 80^° C to 60^° C in 5 minutes. The temperature of the surrounding is 20^° C. The time it takes to cool from…202312 April, Shift 1 · Q37
• A body cools in 7 minutes from 60^° C to 40^° C. The temperature of the surrounding is 10^° C. The temperature of the body after…20236 April, Shift 2 · Q38
• A body cools from 60^° C to 40^° C in 6 minutes. If, temperature of surroundings is 10^° C. Then, after the next 6 minutes, its…202329 January, Shift 1 · Q23
• A bowl filled with very hot soup cools from 98^° C to 86^° C in 2 minutes when the room temperature is 22°C. How long it will…202325 January, Shift 1 · Q6