Question

Cut-off wavelength for continous x – rays coming from x – rays tulie operating at 40 kv:

Solution

Correct option is

                

                     

SIMILAR QUESTIONS

Q1

50% of  X – rays oltained from a Coolidge tukie pass through 0.3mm thick  alminium  fail. If the P.D. letueen thew target and the cathode is increased.then the fractuion of X – rays passing from fail will be.

Q2

The threshold wavelength of sodiam  metal is 6800the work function is:

Q3

The work function of a sulsstance is 4.0ev the longest wavelength of light that can cause photoelectron emission from this sulsstance is opprinately.

Q4

Potential energy of li2t electron is

Q5

The slope of frequency of incident light and stopping  potential for a given  surface will be.

Q6

If  is the radsies of the first orbit of hydrogen atom, then the radii of second, third and forth orbit in terms of  us.

Q7

Which of the following. Species will produe the shorte wavelength for thetransition  n = 2 to n = ?

Q8

The de- Broglie wavelength associated  with proton changes by 0.25%. if its momentum  is changed by the initial momentum was

Q9

The ratio of velocities of proton and  - particle is 4:1, then he ratio of their de-brohlie wavelength is

Q10

Light of wavelength 400 nm is incident on the cathode of a photocell, the stopping potential recorded is 6.0 V. If the wavelength of the incident light is increased to 600 nm, what will be the new stopping potential?