EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Heat Transfer>COMEDK UGET 2014>Q 1

HARD

COMEDK UGET

IMPORTANT

Earn 100

A pan filled with hot food cools from $94 ° C$ to $86 ° C$ in $2 \min,$ when the room temperature is $20 ° C .$ The time taken for the food to cool from $86 ° C$ to $74 ° C$ will be

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Important Questions on Heat Transfer

EASY

COMEDK UGET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Heat Transfer>COMEDK UGET 2015>Q 1

If the surface is a perfect reflector, the change in momentum of the wave after falling on the surface is

HARD

COMEDK UGET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Heat Transfer>COMEDK UGET 2014>Q 1

A pan filled with hot food cools from

94 ° C

to

86 ° C

in

2 \min,

when the room temperature is

20 ° C .

The time taken for the food to cool from

86 ° C

to

74 ° C

will be