Infrared Photography

Q.

Infrared radiations are preferred over ordinary visible light for taking photographs in fog because

1. Infrared radiations have smaller wavelength

2. Infrared radiations have larger wavelength

3. Infrared radiations are scattered to a greater extent

4. Infrared radiations reacts with fog and destroys it

Q.

_____ is used to take photographs of distant objects.

1. Infrared radiation

2. UV ray

3. X-ray

4. Visible light

Q.

In fog photographs of the object taken with infrared radiation

1. IR radiation has a lesser wavelength than visible radiation

2. Scattering of IR light is more than visible light

3. The intensity of IR light from the object is less

4. Scattering of IR light is less than visible light

Q.

why are infra-red radiations used for photography in fog?