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1.
If the wavelength of incident light changes from 400 nm to 300 nm, the stopping potential for photoelectrons emitted from a surface becomes approximately
2.
In a photoelectric experiment for 
incident radiation, the potential difference to stop the ejection is 
If the incident light is changed to 
then the potential required to stop the ejection of electrons will be
incident radiation, the potential difference to stop the ejection is If the incident light is changed to then the potential required to stop the ejection of electrons will be
3.
If the potential difference between the anode and cathode of the 
-ray tube is increase
-ray tube is increase
4.
If the momentum of an electron is changed by 
then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of the electron will be
then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of the electron will be
5.
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency 
of the characteristic X-rays emitted from different targets varies with atomic number 
as
of the characteristic X-rays emitted from different targets varies with atomic number as
6.
If 
be the accelerating voltage, then the maximum frequency of continuous -rays is given by
be the accelerating voltage, then the maximum frequency of continuous -rays is given by
7.
Penetrating power of X-rays depends on
8.
Momentum of a photon is 
The corresponding wavelength is
The corresponding wavelength is
9.
For harder -rays
-rays
10.
The speed of an electron having a wavelength of 
is
is