NEET Physics Dual Nature of Radiation and Matter Questions Solved


The maximum kinetic energy of photoelectron emitted from the surface of work function f due to incidence of light of frequency n is E. If the frequency of incident light is doubled, then maximum kinetic of emitted photon will be

1.  2E

2.  2E - f

3.  2E + f

4.  2E + 2f

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


The de-Broglie associated with an electron accelerated through a voltage of 900 V is 

1.  0.31 Ao  

2.  0.41 Ao 

3.  0.5 Ao  

4.  0.16 A0

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


A 200W sodium street lamp emits yellow light of wavelength 0.60μm. Assuming it to be 50% efficient, in converting electrical energy into light, the number of photons of yellow light emitted per second is nearly equal to 

1.  3 x 1019  

2.  3 x 1020  

3.  1.5 x 1020  

4.  6 x 1020

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


Monochromatic radiation emitted when electron on hydrogen atom jumps from the first excited state to ground state irradiates a photosensitive material. The stopping potential is found to be 4V. The threshold wavelength of the material is 

1.  2 x 10-7m  

2.  2 x 10-6m  

3.  4 x 10-7m  

4.  4 x 10-6m

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


In a photoelectric experiment using a metal of work function 1.8 eV, if the maximum kinetic energy of emitted electrons is 1.5eV, then the corresponding value to stopping potential is

1.  1.8V

2.  3.3V

3.  0.3V

4.  1.5V

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


The concept of matter-wave was given by

1.  de-Broglie

2.  Einstein

3.  Maxwell

4.  Bohr

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level:


If the momentum of a photon is p, then its energy is 

1.  pc

2.  12pc  

3.  p22c  

4.  14pc

 

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level: