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Identify the part of the electromagnetic spectrum which is:
produced by bombarding a metal target by high speed electrons.
Name the rays or waves of highest frequency .
Moseley's Law for characteristic X-ray is √v = a(Z − b). Here,
Find the cutoff wavelength for the continuous X-rays coming from an X-ray tube operating at 30 kV.
(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Write the range of the wavelength of the following electromagnetic radiations:
(a) Infrared rays
(b) Ultraviolet rays
(c) γ -rays
Write one use of each of the above.
Name the scientist who discovered Infra-red waves
Name the part of the electromagnetic spectrum which is:
Suitable for radar systems used in aircraft navigation.
Radio waves of constant amplitude can be generated with.
Below is an incomplete table showing the arrangement of electromagnetic spectrum in the increasing order of their wavelength. Complete the table:
| Gamma ray | X - ray | UV rays | Visible rays | Infrared | A | Radio waves |
- Identify the radiation A.
- Name the radiation used to detect fracture in bones.
- Name one property common to both A and Radio waves.
