State any one use of infrared radiations.

State any one use of the magnet.

What are infrared radiations ? How are they detected ? State one use of these radiations

What are ultraviolet radiations ? How are they detected ? State one use of these radiations

State any one source of ultraviolet radiations.

Mention two applications of infrared radiation.

Name two sources, each of infrared radiations and ultraviolet radiations.

Mention three properties of infrared radiations similar to visible light.

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

Consider the following statements : I. Glass is transparent to solar radiations II. Glass is opaque to infrared radiations III. Warm soil and plants emit solar radiation IV. Warm soil & plants emit infrared radiations Which of the above statements are true ?

Infrared radiation is detected by