Advertisements
Advertisements
Question
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
Options
solar cell
solar cooker
thermometer
thermos flask
Advertisements
Solution
A device in which the loss of heat due to conduction, convection and radiation is minimized is thermos flask.
APPEARS IN
RELATED QUESTIONS
Name the three modes of transfer of heat.
What will absorb heat?
Steel spoon
Complete the following sentence:
CGS units of heat is _________
Write scientific reason.
In the cold regions, snow falls in winter.
When an object is heated, the molecules that make up the object
The amount of heat gained by a substance is equal to the product of its mass and latent heat.
How can heat energy be generated?
Observe the picture given in figure. Water is being boiled in a pan of wide base.
- Which position P or T will feel warmer?
- Fill up the boxes P and T to indicate the mode of flow of heat to the hand.
Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
