Continuous Spectrum
Trending Questions
Q.
One of the following wavelengths is absent and the rest are present in the X-rays coming from a Coolidge tube. Which one is the absent wavelength?
25 pm
50 pm
75 pm
100 pm
Q.
Consider a photon of continuous X-ray coming from a Coolidge tube. Its energy comes from
The kinetic energy of the striking electron
The kinetic energy of the free electrons of the target
The kinetic energy of the ions of the target
An atomic transition in the target
Q. In the continuous part of the spectrum of X-rays, the limiting frequency is
- inversely proportional to the potential through which electrons have been accelerated
- directly proportional to the accelerating potential
- not dependent upon the acclerating potential
- is dependent upon the nature of the target material
Q. What is the formula we use for finding energy while finding dimensional formula for planks constant?
Q. In a Coolidge tube experiment, the cutoff wavelength for the observed x ray was found to be 25 pm. This means x rays with wavelengths greater than this won't be present; only x rays whose wavelength is less than 25 pm will be received.
- True
- False
Q.
An X-rays tube operates at 20 kV. A particular electron loses 5% of its kinetic energy to emit an X-rays photon at the first collision. The wavelength corresponding to this photon will be :- |
(1) | 1.24 nm |
(2) | 2.24 nm |
(3) | 3.5 nm |
(4) | zero |