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. Ground state energy of the 4th orbit in a H-atom is ______.
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

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

Question 2 of 15

Question 3 of 15

3. The minimum wavelength of X-rays can further be reduced by
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

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

Question 4 of 15

Question 5 of 15

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

Question 5 of 15

Question 6 of 15

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

Question 6 of 15

Question 7 of 15

7. Photon of highest frequency will be absorbed when transition takes place from _____.
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

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

Question 8 of 15

Question 9 of 15

9. Electron cannot exist in the nucleus; it is confirmed by observing that _____.
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. UV radiation can be produced by
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

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

Question 11 of 15

Question 12 of 15

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

Question 12 of 15

Question 13 of 15

13. In an X-ray tube, electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is _______.
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. The metastable state for an atom in laser light is
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. The electric P.E of an electron in an orbit at a distance rn from the positive charge
A.
B.
C.
D.

Question 15 of 15


 

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