Physics Atomic Spectra Test Online Preparation Mcqs

Physics Atomic Spectra Test Online Preparation Mcqs With Answers Start Below

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Question 1 of 15

1. A Balmer line is emitted when the electron in a hydrogen atom jumps from
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. In excited state the total energy is E, what is K.E. with proper sign
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. What is the velocity of a particle of mass m & de-Broglie wavelength λ?
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the acceleration potential is 2.0K V, will be
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. Band spectrum is produced by:
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. Radiation produced from TV picture tube is
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. Radiation with wavelength longer than red lights
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Bracket series is obtained when all transitions of electron terminate on _______.
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Total number of series in hydrogen spectrum is
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. Reverse process of photoelectric effect is
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. The penetrating power of x-rays is comparable with that of
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. Excited atoms return to their ground state in ________.
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. Wave-like characteristic of electron is demonstrated by
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. X-rays are diffracted by a crystal but not by a diffraction grating because ______.
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. In He-Ne laser, the lasing action is produced by
A.
B.
C.
D.

Question 15 of 15


 

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