Two friends $A$ and $B$ are waiting for another friend for tea. $A$ took the tea in a cup and mixed the cold milk and then waits. $B$ took the tea in the cup and then mixed the cold milk when the friend comes. Then the tea will be hotter in the cup of
Two friends $A$ and $B$ are waiting for another friend for tea. $A$ took the tea in a cup and mixed the cold milk and then waits. $B$ took the tea in the cup and then mixed the cold milk when the friend comes. Then the tea will be hotter in the cup of
- A
$A$
- B
$B$
- C
Tea will be equally hot in both cups
- D
Friend's cup
Similar Questions
A sphere, a cube and a disc all of the same material, quality and volume are heated to $600\,^oC$ and left in air. Which of these will have the lowest rate of cooling ?
A sphere, a cube and a disc all of the same material, quality and volume are heated to $600\,^oC$ and left in air. Which of these will have the lowest rate of cooling ?
Newton’s law of cooling, holds good only if the temperature difference between the body and the surroundings is
Newton’s law of cooling, holds good only if the temperature difference between the body and the surroundings is
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature ${120^o}C$, then
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature ${120^o}C$, then
Draw the graph that represents the cooling of hot water with time. Is the slope of the above graph positive or negative ?
Draw the graph that represents the cooling of hot water with time. Is the slope of the above graph positive or negative ?
$Assertion :$ Perspiration from human body helps in cooling the body.
$Reason :$ A thin layer of water on the skin enhances its emissivity.
$Assertion :$ Perspiration from human body helps in cooling the body.
$Reason :$ A thin layer of water on the skin enhances its emissivity.
- [AIIMS 2006]