Question 120: Dual Nature of Matter and Radiation

Question

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R
Assertion A : The beam of electrons show wave nature and exhibit interference and diffraction.
Reason R : Davisson Germer Experimentally verified the wave nature of electrons.
In the light of the above statements, choose the most appropriate answer from the options given below :

Accepted Answer

The assertion A and the reason R are both correct statements, and the reason R is the correct explanation of the assertion A.
Explanation :
The assertion A states that the beam of electrons exhibit wave nature and show interference and diffraction. This statement is correct because electrons exhibit both particle-like and wave-like behavior. When electrons are accelerated to high speeds, they have a wavelength associated with them, and this wavelength can interfere and diffract just like any other wave.
The reason R states that the wave nature of electrons was experimentally verified by Davisson Germer. This statement is also correct because Davisson and Germer performed an experiment in 1927 where they observed diffraction patterns in a beam of electrons that were scattered off a nickel crystal. This observation provided strong evidence for the wave nature of electrons.
Therefore, both assertion A and reason R are correct statements, and reason R is the correct explanation of assertion A.

Answer

A is not correct but R is correct.

Answer

Both A and R are correct and R is the correct explanation of A

Answer

Both A and R are correct but R is Not the correct explanation of A

Answer

A is correct but R is not correct

Dual Nature of Matter and Radiation

Choose the correct answer: