Thermal Conductivity by Searle's Method

When will the temperature of the four thermometers be measured?

• Initial State

• Steady State

• Final State

• Dynamic Equilibrium State

Which material has higher thermal conductivity?

• Diamond

• Copper

• Iron

• Gold

What is the unit of K?

• W m/K

• W/mK

• C/mK

• Cm/K

The distance between two thermometers T1 and T2 i.e., d is;

• Constant throughout the experiment

• is changed while conducting the experiment

• Twice of its value during the experiment

• of no use while calculating K

Searle's experiment is carried in/at

• At room temperature

• Vacuum

• Low Temperature

• High Temperature

The dimensional formula for the coefficient of thermal conductivity is

• MLTK

• MLTK-1

• MLT-1K-11

• MLT-3K-1

Choose the correct statement

• Mass of water is halved during the calculation

• Mass of water is halved during the calculation

• Mass of water collected per second is used for calculation

• Mass of water is not used in the calculation of k

Why is the rate of flow of water kept constant?

• So that, there is no significant change in temperature for 5-10 minutes.

• For easier measurement of temperature

• To attain the dynamic equilibrium

• To make the temperature a constant term.

What is the use of pinch cork in the experiment?

• to maintain the Water flow throughout the experiment

• to allow water to enter drop by drop

• to maintain a smooth flow of water in the tank

• For the steam to enter the tank

The extent to which materials conduct heat can be quantified by a parameter known as

• Thermal gradient

• Thermal Conductivity

• Thermal Coefficient

• Thermal Convection