A body at 50^(@)C cools in a surrounding...

A body at `50^(@)C` cools in a surroundings maintained at `30^(@)C`. The temperature at which the rate of cooling is half that of the beginning is

`16.3^(@)C`

`26.3^(@)C`

`40^(@)C`

`46.3^(@)C`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

THERMAL PROPERTIES OF MATTER
AAKASH SERIES|Exercise EXERCISE-3|87 Videos
THERMAL PROPERTIES OF MATTER
AAKASH SERIES|Exercise THERMOMETRY (LECTURE SHEET) Straight Objective Type Questions|15 Videos
THERMAL PROPERTIES OF MATTER
AAKASH SERIES|Exercise EXERCISE-IB|68 Videos
SYSTEM OF PARTICLES AND ROTATIONAL MOTION
AAKASH SERIES|Exercise PRACTICE EXERCISE|99 Videos
THERMODYNAMICS
AAKASH SERIES|Exercise EXERCISE - 3|33 Videos

Similar Questions

Explore conceptually related problems

A body at 50^(@) C cools in a surroundings maintained at 30^(@) C. The temperature at which the rate of cooling is half that of the begining is

A hot body is placed in cooler surroundings. When the body temperature is 75^(@)C , the rate of cooling is 4^(@)C//min . When it is 55^(@)C , the rate of cooling is 2^(@)C//min . The temperature of the surroundings is

A frog with body temperature of 20^@C is transferred to an area with 30^@C temperature. What will be the body temperature of frog in the new environment?

A body cools from 70^(@)C to 50^(@)C in 5 minutes. Temperature of surroundings is 20^(@)C . Its temperature after next 10 minutes is

A body takes 8 minutes to cool from 90^(@) C to 80^(@) C in a surrounding of temperature 25^(@) C. The time taken by it to cool from 80^(@)C " to" 70^(@) C in the same surroundings is

A body cools form 50^(0)C to 40^(0)C in 6 minutes. When its surroundings temperature is 30^(0)C , what will be its temperature 12 min after the start of the experiment? Surrounding temperature remains the same ?

A liquid initially at 75^(0)C cools to 55^(0)C in 12.5 minutes and to 45^(0)C in 10 minutes. Which of the following temperatures is not that of the surroundings

AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-2

A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS un...
Text Solution
|
The ratio of intensities of radiation at distances of R and 3R from a ...
Text Solution
|
If reflecting and transmitting powers of a body are 0.2 and 0.3 units,...
Text Solution
|
If the temperature of a Black body increases by 50% then amount of rad...
Text Solution
|
An incandescent light bulb has a tungsten filament that is heated to a...
Text Solution
|
The rate of emission of radiation of a black body at temperature 27^(@...
Text Solution
|
The radiation emitted by a star A is 10,000 times that of the sun. If ...
Text Solution
|
The rectangular surface of area 8cmxx4cm of a black body at a temperat...
Text Solution
|
Two objects A and B have same shape and area. The Emissivity of A is 0...
Text Solution
|
A Black metal foil receives radiation of power P from a hot sphere at ...
Text Solution
|
If wavelengths of maximum intensity of radiations emitted by the sun a...
Text Solution
|
The wavelength of maximum energy released during an atomic explosion w...
Text Solution
|
If the maximum intensity of radiation for a black is found at 2.65 mu ...
Text Solution
|
The wavelength of maximum emitted energy of a body at 700K is 4.08 um ...
Text Solution
|
A hot body is placed in cooler surroundings. When the body temperature...
Text Solution
|
Certain quantity of water cools from 70^(@)C to 60^(@)C in the first 5...
Text Solution
|
A body cools from 70^(@)C to 50^(@)C in 5 minutes. Temperature of surr...
Text Solution
|
A body at 50^(@)C cools in a surroundings maintained at 30^(@)C. The t...
Text Solution
|
A brass rod and a copper rod have same difference in length at all tem...
Text Solution
|
A spherical black body with a radius of 12 cm radiates 450 watt power ...
Text Solution
|