Mention four properties of thermal radiation.

Mention three properties of infrared radiations similar to visible light.

How are gamma radiations produced ? Mention two common properties of the gamma radiations and visible light.

State any two properties of alpha radiation.

Mention the properties of sound.

Name three properties of ultraviolet radiations which are similar to visible light

Give two properties of ultraviolet radiations which differ from visible light.

Mention two applications of infrared radiation.

Mention any four properties which show that boron shows diagonal relationship with silicon.

Give two properties of infrared radiations which differ from visible light.

Mention any two properties of DNA that make it an ideal genetic material.