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A body in a room cools from 85^(@)C to 8...

A body in a room cools from `85^(@)C` to `80^(@)C` in 5 minutes. Then the time taken to cool from `80^(@)C` to `75^(@)C` is

A

5 minutes

B

more than 5 minutes

C

less than 5 minutes

D

10 minutes

Text Solution

Verified by Experts

The correct Answer is:
B
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NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Newtons Law of Cooling)
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  2. A metal sphere cools from 72^(@)C to 60^(@)C in 10 minutes. If the sur...

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  3. A body cools in 7 minutes from 60^(@)C to 40^(@)C. What will be its t...

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  4. Newton’s law of cooling, holds good only if the temperature difference...

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  5. A body takes, 4 minutes to cool from 100^(@)C to 70^(@)C, if the room ...

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  6. A body in a room cools from 85^(@)C to 80^(@)C in 5 minutes. Then the ...

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  7. A hot water kept in a beaker placed in a room cools from 60^(@)C to 50...

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  8. A vessel full of hot water is kept in a room and it cools from 80^(@)C...

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  9. A body cools from 50^(@)C to 49.9^(@)C in 5 s. the temperature of the ...

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  10. A body cools from 50^(@)C to 46^(@)C in 5 min and to 40^(@)C in the ne...

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  11. A body cools from 60^(@)C to 50^(@)C in 10 minutes . If the room tempe...

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  12. A body cools at the rate of 0.6^(@)C//s when it is 40^(@)C above the s...

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  13. A body cools from 60^(@)C to 52^(@)C in five minutes. What will be fur...

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  14. A body cools at the rate of 3^(@)C//min when its temperature is 50^(@)...

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  15. A body cools at the rate of 0.75^(@)C//s when it is 50^(@)C above the ...

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  16. A sphere and a cube of equal volumes both are made of iron and have si...

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  17. In the above question, the ratio of the initial rate of fall of temper...

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  18. A body cools from 60^(@)C to 52^(@)C in 5 minutes what will be the fur...

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  19. A body cools at the ratio of 1.2^(@)C//min when its temperature is mor...

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  20. If the temperature of the body theta and time of cooling 't' and room ...

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