PHYSICS [2 Mark Question Answer]

Length of a square room = 13 m (side)
Area = ?
Area of a square = Side*Side
= 13*13
= 169 m²

Megawatt = 1000000 watts
Kilometre = 1000m
Metric tonne = 10 kilograms
Millisecond =10^-3 seconds.

Estimation is not reliable way of measurement it can save your time but cant give an exact result.
Example- A player while giving a pass to a fellow player in the game of hockey always estimates distance and hits the ball accordingly.
or, a fruit merchant will buy fruit orchard by estimating how much fruit he will get and so on.

Generally, the range of clinical thermometer is from 95∘F to 110∘F and the boling point of water is 212∘F . If a clinical thermometer is sterilised by boiling water, the capillary of thermometer will burst due to thermal expansion of mercury in the capillary tube of thermometer.

If the temperature of a patient is 40°C , it means that the patient has fever.
If the temperature of a patient is 35.5°C , it means that the body does not generate enough heat.

The clinical thermometer has marking from 35 degree C to 42 degree C because it is designed in such a way that it can only measure the temperature of human body and the temperature of human body is always between 35 degree C to 42 degree C.

A clinical thermometer is a thermometer used to measure human body temperature. Mostly these thermometers are mercury-in-glass thermometers. They are accurate and sensitive, having a narrow place where the mercury level rises very fast.

n kelvin = 373K
In celsius = ?
celsius + 273= Kelvin
= kelvin – 270
= 100°C

n celsius = 27°C
In Kelvin = ?
Kelvin = °C+273
= 27 + 273
=300 K.

If we take the total length of mercury in capillary tube upto the mark hundred degree centigrade.
Then the 2/5 height of Mercury will be
2/5×100° = 200/5° =40°Celsius will be the temperature.

In a Laboratory thermometer, Range of Celsius scale is from −10∘ C to 110∘ C.
In Celsius scale the range is from 10∘ to 100∘C
In Kelvin scale the range is from 273 K to 373 K.