A solid copper sphere of density 
, specific heat capacity 
and radius 
is initially at 
. It is suspended inside a chamber whose walls are at 
. The time required (in 
) for the temperature of the sphere to drop to 
is ( 
is Stefan's constant and all the quantities are in SI units.)
Text Solution
Verified by ExpertsThe correct answer is:
B
Heat lost form the sphere 
Heat lost from radiation
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
A diatomic gas has an initial internal energy of 80 cal. A work of is done on the gas and the gas …
When a monatomic gas expands at constant pressure, the percentages of heat supplied that is used to…
The heat energy supplied to a diatomic gas at constant pressure is , then the work done by the gas…
The relation between volume and absolute temperature (T) of a gas in an adiabatic process is
In a thermodynamic process if ' and ' ' are the work done and change in the internal energy of a …
A gas is expanded from an initial state to a final state along a path that consists of