WorksheetsCLASS XII EM WAVES
Total questions: 10
Worksheet time: 4mins
Which among the following has the maximum penetrating power?
Radio waves
Microwaves
Ultraviolet radiation
Gamma rays
Which of the following is called heat radiation?
X-rays
Gamma rays
Microwave
Infrared radiation
The magnetic field in a travelling electromagnetic wave has a peak value of 20nT. The peak value of electric field strength
3 V/m
6 V/m
9 V/m
12 V/m
Electromagnetic waves are produced by
accelerated charged particle
charge at rest
charge in uniform motion
acceleration particle
In general, the wavelength of microwaves is
more than that of radiowaves
less than that of ultraviolent waves
more than that of infrared waves
less than that of infrared waves
A radiowave has a maximum magnetic field induction of 10-4 T on arrival at a receiving antenna . The maximum electric field intensity of such a wave is
zero
3× 104 V/m
5.8× 10-9 V/m
3.3× 10-13 V/m
The equation of an EM wave is given by Ex =36 Sin[ 5.1 Χ106 z - 314 t] i V/m. The wavelength of the wave is
1.23 Χ 10-5
1.23 Χ 10-6
1.25 Χ 10-9
1.29 Χ 10-5
Identify the type of waves which are produced by bombarding a metal target by high energy electrons.
X rays
γ rays
microwaves
radio waves
3. The magnetic field in a plane electromagnetic wave is given by: By = 12 × 10^–8 sin ( The magnetic field in a plane electromagnetic wave is given by: By = 12 × 10-8sin (1.20 × 107 z + 3.60 × 1015 t) T. The angular wave number is
1.50 × 102
1.20 × 107
1.30 × 10-7
1.5 × 104
Identify the type of waves which are produced by radioactive decay of the nucleus
X Rays
U V Rays
IR Waves
Υ Rays
