Dual Nature of Matter and Radiation (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 1  5 of 36
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Question number: 1
» Dual Nature of Matter and Radiation » DeBroglie Relation
Question
One electron & one proton is accelerated by equal potential. Ratio of their deBroglie wavelengths is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 2
» Dual Nature of Matter and Radiation » DeBroglie Relation
Question
A photon and an electron have equal energy E. is proportional to
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Not depend upon E 

Question number: 3
» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation
Question
The separation between Bragg’s planes in a crystal is 10 Å. Then the wavelength of those Xrays which can be diffracted by this crystal is
(1) 5 Å (2) 10 Å
(3) 20 Å (4) 25 Å
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 2 are correct 

b.  2 and 4 are correct 

c.  1 and 3 are correct 

d.  1,2 and 3 are correct 

Question number: 4
» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation
Question
An electromagnetic radiation of frequency 3 × 10 ^{15} cycles per second falls on a photo electric surface whose work function is 4.0 eV Find out the maximum velocity of the photo electrons emitted by the surface
Choices
Choice (4)  Response  

a.  1.73 × 10 ^{6 } m/s 

b.  13.4 × 10 ^{19 } m/s 

c.  19.8 × 10 ^{19 } m/s 

d.  Question does not provide sufficient data or is vague 

Question number: 5
» Dual Nature of Matter and Radiation » DeBroglie Relation
Question
A radio station is transmitting waves of wavelength 300 m. If diffracting power of transmitter is 10 kW, then numbers of photons diffracted per second is
Choices
Choice (4)  Response  

a.  1.5 × 10 ^{35} 

b.  1.5 × 10 ^{33} 

c.  1.5 × 10 ^{31} 

d.  1.5 × 10 ^{29} 
