SSLC (English Medium) Class 8 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Define - Thallus.

Write any three economic importance of algae.

Write the differences between algae and fungi.

Movement of organisms from place to place is called _______.

______ is attached to soft parts of the body like blood vessels, iris, bronchi, and the skin.

Differentiate between the following.

Movement and Locomotion.

______ is a transparent, tasteless, odourless, chemical substance.

The magnitude of a physical quantity consists of ______.

What is physics?

Mention the factors on that the effect of a force depends.

______ mirrors form the perfect image of an object.

The ______ of a mirror determines the type of image it forms.

The ______ is an optical device with a polished surface that reflects the light falling on it.

Curved mirrors form the perfect image of an object.

Curved mirrors produce images that are either enlarged or diminished.

A thin layer of molten aluminium or silver is used for coating glass plates that will then become mirrors.

Assertion: The mirrors used in searchlights are parabolic and not concave spherical.
Reason: In a concave spherical mirror the image formed is always virtual.

If two mirrors are placed at an inclination of 30° then how many images can be seen?

Car rearview mirrors carry a warning message that “objects in the rearview mirror are closer than they appear”. Why do you think this is so?

In ice cubes, the force of attraction between the water molecules is ______.