A body initially at 80^(@)" C" cools to ...

A body initially at `80^(@)" C"` cools to `64^(@)" C"` in 5 minutes and to `52^(@)"C"` in 10 minutes. The temperature of the body after 15 minutes will be

A

`42.7^(@)C`

B

`35^(@)C`

C

`47^(@)C`

D

`40^(@)C`

Text Solution

Verified by Experts

The correct Answer is:

A

Topper's Solved these Questions

TRANSMISSION OF HEAT
ERRORLESS |Exercise Graphical Questions|17 Videos
TRANSMISSION OF HEAT
ERRORLESS |Exercise Assertion & Reason|24 Videos
TRANSMISSION OF HEAT
ERRORLESS |Exercise Radiation (Newton s Law of Cooling)|37 Videos
THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY
ERRORLESS |Exercise Self Evaluation Test|15 Videos
UNITS, DIMENSION & MEASUREMENTS
ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

A body initially at 80^(@)C cools to 64^(@)C in 5 minutes and to 52^(@)C in 10 minutes. What is the temperature of the surroundings?

A liquid initally at 70^(@)C cools to 55^(@)C in 5 minutes and 45^(@)C in 10 minutes. What is the temperature of the surrounding ?

A body initially at 80^(@)C cools to 64^(@)C in 5 minutes and to 52^(@)C in 10 minutes. What will be its temperature in 15 minutes and what is the temperature of its surroundings?

A body initially at 80^@C cooIs to 64^@C in 5 minutes and to 52^@C in 5 minutes. What will be the temperature after 15 minutes and what is the temperature of surroundings.

A body cools from 50^(@)C to 46^(@)C in 5 minutes and to 40^(@)C in the next 10 minutes. The surrounding temperature is :

A body cools from 70^(@)C" to "60^(@)C in 5 minutes and to 45^(@)C in the next 10 minutes. Calculate the temperature of the surroundings.

A body initially at 64^(@)C cools to 52^(@)C in 5 minutes. The temperature of surroundings is 16^(@)C . Find the temperature after furthre 5 minutes.

ERRORLESS -TRANSMISSION OF HEAT-Critical Thinking

Three rods of same dimensions are arranged as shown in Fig. They have ...
Text Solution
|
Two metallic spheres S1 and S2 are made of the same material and have ...
Text Solution
|
Three discs, A, B and C having radii 2m, 4m and6m respectively are coa...
Text Solution
|
The total energy radiated from a block body source at constant tempera...
Text Solution
|
A solid sphere and a hollow sphere of the same material and of equal r...
Text Solution
|
A solid copper cube of edges 1 cm is suspended in an evacuated enclosu...
Text Solution
|
A body initially at 80^(@)" C" cools to 64^(@)" C" in 5 minutes and to...
Text Solution
|
A 5 cm thick ice block is there on the surface of water in a lake. The...
Text Solution
|
A square is made of four rods of same material one of the diagonal of ...
Text Solution
|
A cylindrical rod with one end in a steam chamber and the other end in...
Text Solution
|
One end of a copper rod of length 1.0 m and area of cross-section 10^...
Text Solution
|
An ice box used for keeping eatables cool has a total wall area of 1m^...
Text Solution
|
Five rods of same dimensions are arranged as shown in the figure. They...
Text Solution
|
A hot metallic sphere of radius r radiates heat. It's rate of cooling ...
Text Solution
|
A solid copper sphere (density rho and specific heat c) of radius r at...
Text Solution
|
One end of a copper rod of uniform cross-section and of length 3.1 m i...
Text Solution
|
A sphere and a cube of same material and same volume are heated up to ...
Text Solution
|
The temperature of the two outer surfaces of a composite slab, consist...
Text Solution
|
The figure shows a system of two concentric spheres of radii r1 and r2...
Text Solution
|
Four rods of identical cross-sectional area and made from the same met...
Text Solution
|