SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Assertion (A): A current-carrying conductor experiences a force in a magnetic field.
Reason (R): The net charge on a current-carrying conductor is zero.

What is the concept of temperature?

Give reasons why –

a steam burn is more damaging than a burn caused by boiling water at the same temperature.

Give reasons why –

an igloo is built as a winter shelter

Give reasons why –

gaps are left between railway tracks

Give reasons why –

chimneys are located high up in kitchens and factories

Give reasons why –

we wear woolen clothes in winter

While a substance is undergoing a change of state, the temperature of the body remains ______.

______ is the degree of hotness or coldness of a body.

Which factor determines the direction of flow of heat from one body to another?

What is the minimum possible temperature? Is there also a maximum possible temperature?

What do you mean by thermal equilibrium?

Why are burns caused by steam more painful than those caused by boiling water at the same temperature?

Define absolute zero.

Explain the following effects of heat.

Change in temperature

What will be the final temperature if 1,68,000 J of heat is absorbed by 2 kg of water at 30°C?

What is the composition of the sun? How was it formed?

The process that takes place in the Sun is ______.

The energy of the sun is radiated in the form of ______ Rays.

Sun is the star present in the galaxy called ______.