MCQ Quiz on Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter with Answers

We have compiled the MCQ Questions for Class 12 Chemistry Chapter 11 Dual Nature of Radiation and Matter with Answers Pdf free download covering the entire syllabus for JEE/NEET and Boards. Practice MCQ Questions for Class 12 Physics with Answers on a daily basis and score well in exams. Refer to the Dual Nature of Radiation and Matter Class 12 MCQs Quiz Questions with Answers here along with a detailed explanation

Dual Nature of Radiation and Matter Class 12 MCQs Questions with Answers

MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter with Answers

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1.  In Einstein’s picture of Photoelectric emission, the photoelectric emission does not take place by

 
 
 
 

2. Which of the following when falls on a metal will emit photoelectrons ?

 
 
 
 

3. Einstein’s photoelectric equation states that
hν = W0 + Ek.
In this equatin, Ek refers to the

 
 
 
 

4.  
The maximum energy of electrons released in a photocell is independent of

 
 
 
 

5. In photoelectric effect, the number of photoelectrons emitted is proportional to

 
 
 
 

6. Cathode rays were discovered by

 
 
 
 

7.  
When light is incident on a metal surface the maximum kinetic energy of emitted electrons

 
 
 
 

8. The photo-electrons emitted from a metal surface are such that their velocity

 
 
 
 

9. A Proton and an a-particle have the same de Broglie wavelength. What is same for both of them?

 
 
 
 

10. Which phenomenon best supports the theory that matter has a wave nature?

 
 
 
 

11. Two particles A1 and A2 of masses m1, m2(m1 > m2) have the same de Broglie wavelength. Then,

 
 
 
 

12. Which of the following metals is not sensitive to visible light?

 
 
 
 

13. The kinetic energy of an electron is 5 eV. Calculate the de broglie wavelength associated with it. (h = 6.6 × 10-34 Js, me = 9.1 × 10-31 kg)

 
 
 
 

14. Photoelectric effect is the phenomenon in which

 
 
 
 

15. Light of frequency 1.9 times the threshold frequency is incident on a photosensitive material. If the frequency is halved and intensity is doubled, the photocurrent becomes

 
 
 
 

16.  
Which of the following are quick electron emissions?

 
 
 
 

17. In a photon-particle collision, the quantity that does not remain conserved is

 
 
 
 

18. A discharge takes place between the two electrodes on applying the electric field to the gas in the discharge tube. The cause of this fluorescence was attributed to

 
 
 
 

19.  In photoelectric effect, the photocurrent

 
 
 
 

20. The photoelectric effect is based on the law of conservation of

 
 
 
 

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