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1.
In the graph given below. If the slope is 
-
then value of 
should be
- then value of should be
2.
The de-Broglie wavelength of an electron, 
- particle and proton all having the same kinetic energy is respectively given as 
Then which of the following is not true?
- particle and proton all having the same kinetic energy is respectively given as Then which of the following is not true?
3.
In Milikan's experiment, an oil drop having charge 
gets stationary on applying a potential difference 
in between two plates separated by a distance 
The weight of the drop is
gets stationary on applying a potential difference in between two plates separated by a distance The weight of the drop is
4.
The kinetic energy of an electron gets tripled, then the de-Broglie wavelength associated with it changes by a factor
5.
An 
-ray pulse of wavelength 
is sent through a section of Wilson cloud chamber containing a super saturated gas, and tracks of photoelectron ejected from the gaseous atoms are observed. Two groups of tracks of lengths 
and 
are noted. If the range-energy relation for cloud chamber is given by 
with 
obtain the binding energies of the two levels from which electrons are emitted. Given 
-ray pulse of wavelength is sent through a section of Wilson cloud chamber containing a super saturated gas, and tracks of photoelectron ejected from the gaseous atoms are observed. Two groups of tracks of lengths and are noted. If the range-energy relation for cloud chamber is given by with obtain the binding energies of the two levels from which electrons are emitted. Given
6.
If the energy of a photon corresponding to a wavelength of 
is 
the photon energy for a wavelength of 
will be
is the photon energy for a wavelength of will be
7.
The minimum wavelength of X-ray emitted from X-ray machine operating at an accelerating potential of V volts is
8.
-rays when incident on a metal
-rays when incident on a metal
9.
A beam of 35.0 keV electrons strikes a molybdenum target, generating the X-rays. What is the cut-off wavelength?
10.
The wavelength of a 1 keV photon is 1.24 nm. The frequency of 1 MeV photon is