SSLC (English Medium) इयत्ता ८ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

The distance from the pole to the focus is called ______.

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

The spherical mirror used in a beauty parlour as make-up mirror is _______.

Geometric centre of the spherical mirror is ______.

Define focal length.

Numerical problem.

The radius of curvature of a spherical mirror is 25 cm. Find its focal length.

Ruthvik and Ruha hear a gunshot 2 second after it is fired. How far away from the gun they are standing? (Speed of sound in air is equal to 330ms^-1)

The magnetic strength is _______ at the poles.

A magnet has _______ magnetic poles.

Our sun belongs to ________ Galaxy.

Define galaxy.

The pigment responsible for browning of apples is ______.

Brine is a concentrated solution of ______.

Dissolved gases like sulphur dioxide and nitrogen oxides in rain water causes ________.

_______ is/are responsible for global warming.

_______ is the enzyme responsible for browning of vegetables and fruits.

Define a chemical reaction.

Is rusting good for iron materials? Explain.

The gas collected at the cathode on electrolysis of water is

Define the following.

Latent heat of fusion