Published by:
CGP EDU Academic Team
Published on: August 21, 2026
An object kept in a large room having air temperature of 25°C takes 12 minutes to cool from 80°C to 70°C. The time taken to cool for the same object from 70°C to 60°C would be nearly,
Text Solution
Verified by ExpertsThe correct answer is:
(i) ; (ii) Divide eq
Given that,
Initial air temperature, T 0 = 25° C
Initial temperature of object, T 1 = 80° C
Final temperature of object, T 2 = 70° C
Initial temperature of object, T' 1 = 70° C
Final temperature of object, T 2 = 60° C
Now,
By using Newton's law of cooling for the given case we get
....(i)
....(ii)
Divide eq. (t) by (ii)
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
PHYSICS
The radius of the first permitted Bohr orbit, for the electron, in a hydrogen atom equals 0…
The reading of an ideal voltmeter in the circuit shown is,
The metre bridge shown is in balance position with . If we now interchange the positions of galvan…
The relations amongst the three elements of earth's magnetic field, namely horizontal component H, …
In a u-tube as shown in the fig. water and oil are in the left side and right side of the tube resp…
A deep rectangular pond of surface area A, containing water (density= ), specific heat capacity=s)…