Advertisements
Advertisements
प्रश्न
The following figure shows a copper washer. Explain, giving reasons, whether the following characteristics of the washer increase, decrease, or remain the same when it is heated.
(a) Internal diameter
(b) Volume
(c) Mass
(d) Density
(e) External diameter
Advertisements
उत्तर
On heating the copper washer
(a). Its internal diameter will increase as the copper washer expands outwards
(b). Volume will increase as the size of the metal expands on heating
(c). Mass will remain the same as the mass does not change with change in temperature
(d). Density will decrease as the volume of the washer increases on heating and density is inversely proportional to volume
(e). External diameter will increase because the copper washer expands outwards
APPEARS IN
संबंधित प्रश्न
A given mass of water is cooled from 10°C to 0°C. State the volume changes you will observe. Represent these changes on a temperature-volume graph.
Explain the following
In winter, water tanks (or ocean) start freezing from the surface and not from the bottom.
What do you mean by heat?
Write the SI unit of coefficient of cubical expansion.
Convert the following temperature into Celsius scale:
104oF
Give a scientific reason for the following:
On a hot sunny day, it is advisable to wear light coloured clothes.
When a substance is heated, its temperature ______.
Figure (a–d) shows the readings on four different thermometers. Indicate which of the reading shows the normal human body temperature?
