Advertisements
Advertisements
प्रश्न
State two properties of infrared radiations which differ from visible light.
Advertisements
उत्तर
(i) The wavelength of infrared radiations is longer than that of visible light.
(ii) The infrared radiations have more heating effect than that of visible light.
APPEARS IN
संबंधित प्रश्न
Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals
Name the radiations of wavelength just shorter than 4 × 10-7 m.
The wavelength of X-rays is 0.01 Å. Calculate its frequency. State the assumption made, if any.
50% of the X-rays coming from a Coolidge tube are able to pass through a 0.1 mm thick aluminium foil. If the potential difference between the target and the filament is increased, the fraction of the X-rays passing through the same foil will be
Name the radiation of the electromagnetic spectrum which is used for the following:
For taking photographs of the sky during the night and foggy conditions . Give the frequency range
For television broadcasting, the frequency employed is normally
Microwaves are electromagnetic waves with frequency in the range of.
What happens to the intensity of light from a bulb if the distance from the bulb is doubled? As a laser beam travels across the length of a room, its intensity essentially remains constant. What geometrical characteristic of LASER beam is responsible for the constant intensity which is missing in the case of light from the bulb?
Write two uses of the following radiation.
X-rays
Name one radiation having the wavelength longer than the wavelength of these radiations.
