The temperature of a body falls from $$50^{\circ}\mathrm{C}$$$\mathrm{}$ to $$40^{\circ}\mathrm{C}$$$\mathrm{}$ in 10 minutes. If the temperature of the surroundings is $$20^{\circ}\mathrm{C}$$$\mathrm{, t}$hen the temperature of the body after another 10 minutes will be:
1. $$36.6^{\circ}\mathrm{C}$$
2. $$33.3^{\circ}\mathrm{C}$$$\mathrm{}$
3. $$35^{\circ}\mathrm{C}$$
4. $$30^{\circ}\mathrm{C}$$$\mathrm{}$

Subtopic: Â Newton's Law of Cooling |
Â 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A pan filled with hot food cools in 2 minutes from $$94^{\circ}\mathrm{C}$$ to $$86^{\circ}\mathrm{C}$$ when the room temperature is $$20^{\circ}\mathrm{C}$$. How long will it take to cool from $$71^{\circ}\mathrm{C}$$ to $$69^{\circ}\mathrm{C}$$?
1. 50 sec
2. 52 sec
3. 42 sec
4. 48 sec

Subtopic: Â Newton's Law of Cooling |
Â 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A block of metal is heated to a temperature much higher than the room temperature and allowed to cool in a room free from air currents. Which of the following curves correctly represents the rate of cooling?

 1 2 3 4
Subtopic: Â Newton's Law of Cooling |
Â 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A certain quantity of water cools from $$70^{\circ}\mathrm{C}$$ to $$60^{\circ}\mathrm{C}$$ in the first 5 minutes and to $$54^{\circ}\mathrm{C}$$ in the next 5 minutes.
The temperature of the surroundings will be:

 1 $$45^{\circ}\mathrm{C}$$ 2 $$20^{\circ}\mathrm{C}$$ 3 $$42^{\circ}\mathrm{C}$$ 4 $$10^{\circ}\mathrm{C}$$
Subtopic: Â Newton's Law of Cooling |
Â 76%
From NCERT
NEET - 2014
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Hot coffee in a mug cools from $$90^{\circ}\mathrm{C}$$ to $$70^{\circ}\mathrm{C}$$ in 4.8 minutes. The room temperature is $$20^{\circ}\mathrm{C}$$. Applying Newton's law of cooling, the time needed to cool it further by $$10^{\circ}\mathrm{C}$$ should be nearly:

 1 4.2 minute 2 3.8 minute 3 3.2 minute 4 2.4 minute
Subtopic: Â Newton's Law of Cooling |
Â 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints