Advertisements
Advertisements
प्रश्न
Name the radiation of the electromagnetic spectrum which is used for the following:
Radar and Give the frequency range.
Advertisements
उत्तर
Microwave (109 − 1012)Hz
APPEARS IN
संबंधित प्रश्न
State an additional use of the X-rays waves
A wave has wavelength 50 Å.
- Name the wave.
- State its speed in vacuum.
- State its one use.
Why are infra-red waves often called heat waves? Explain.
State the approximate range of wavelength associated with infrared rays.
Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.
- Name the two waves.
- Compare the speeds of these waves when they travel in vacuum.
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm.name the medium through which it is travelling
Can X-rays be polarised?
The figure shows the intensity-wavelength relations of X-rays coming from two different Coolidge tubes. The solid curve represents the relation for the tube A in which the potential difference between the target and the filament is VA and the atomic number of the target material is ZA. These quantities are VB and ZB for the other tube. Then,

The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation,
(a) the intensity increases
(b) the minimum wavelength increases
(c) the intensity remains unchanged
(d) the minimum wavelength decreases.
Name the radiations used for the detection of fracture in bones.
