Classification of Spectrum

Q. What is absorption spectrum

Q.

Explain what are spectrum lines?

Q.

(a) Arrange the following radiations in the order of their increasing wavelength :

X rays, infrared rays, radio waves, gamma rays, and micro waves.

(b) Name the radiation which is used for satellite communication.

Q.

Name the region just beyond (i) the red end, and (ii) the violet end, of the spectrum.

Q.

Which of the following correctly shows the order of the wavelength of the Electromagnetic waves?

1. Gamma rays < Ultra Violet rays < X rays < Infrared rays

2. Gamma rays < X rays < Ultra Violet rays < Infra Red rays

3. Gamma rays < Infra Red rays < X rays < Ultra Violet rays

4. Gamma rays < Infra Red rays < Ultra Violet rays < X rays

Q.

define electromagnetic spectrum .

Q. ________ is used to see the spectrum of visible light.

1. Glass
2. Mirror
3. Cube
4. Prism

Q. Explain the following :
Infrared radiations are used as signals during war.

Q.

(a) Arrange the following radiations in the order of their increasing wavelength :

X rays, infrared rays, radio waves, gamma rays, and micro waves.

(b) Name the radiation which is used for satellite communication.

Q.

(a) Give a list of at least five radiations, in the order of their increasing wavelength, which make up the complete electromagnetic spectrum.

(b) Name the radiation mentioned by you in part (a) which has the highest penetrating power.

Q. An electromagnetic spectrum is a combination of visible and invisible spectrum.

1. True
2. False

Q. An electromagnetic spectrum is a combination of visible and invisible spectrum.

1. False
2. True