The X-ray beam can be deflected by:
1. | Magnetic field | 2. | Electric field |
3. | Both 1 and 2 | 4. | None of these |
The energy of the EM wave is of the order of 15 KeV. To which part of the spectrum does it belong?
1. X-rays
2. Infrared rays
3. Ultraviolet rays
4. -rays
Which colour of the light has the longest wavelength?
1. violet
2. red
3. blue
4. green
Which of the following statements about electromagnetic waves is/are correct:
A. | X-rays in vacuum travel faster than light waves in vacuum. |
B. | The energy of an X-ray photon is greater than that of a light photon. |
C. | Light can be polarised but X-ray cannot. |
1. A and B
2. B and C
3. A, B and C
4. B only
Which of the following electromagnetic waves has minimum frequency?
1. Radio waves
2. Infrared waves
3. Microwaves
4. X-rays
The shortest wavelength is for
(1) -rays
(2) X-rays
(3) ultraviolet rays
(4) microwaves
The electromagnetic radiations are in descending order of wavelength in the following sequences :
(1) infra-red waves, radio waves, X-rays, visible light rays
(2) Radio-waves, infra-red waves, visible light rays, X-rays
(3) Radio waves, visible light rays, infra-red waves, X-rays
(4) X-rays, visible light rays, infra-red wave, radio-waves
Which of the following are not electromagnetic waves?
(1) cosmic rays
(2) gamma rays
(3) microwaves
(4) X-rays
The wave impedance of free space is
(1) 0
(2) 376.6
(3) 1883
(4) 3776
The frequency 1057 MHz of radiation arising from two close energy levels in hydrogen belongs to
(1) radio waves
(2) infrared waves
(3) micro waves
(4) -rays