Punjab 12th Class Physics Chapter 9 Atomic Spectra Mcqs Test Online

Total Question
10 Questions
Total Marks
20 Marks
Total Time
10 Minuts
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Test Name



Ch. 9 # Atomic Spectra

Subject



Physics (12th Class)

Test Type



MCQs


Punjab 12th Class Physics Chapter 9 Atomic Spectra Mcqs Test Online

Punjab 12th Class Physics Chapter 9 Atomic Spectra Mcqs Test Online

 

Question 1 of 10

Physics

1. If 13.6eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n = 2 is:
1.
2.
3.
4.

Question 1 of 10

Question 2 of 10

2. When an electron in an atom goes from a lower to higher orbit its:

1.
2.
3.
4.

Question 2 of 10

Question 3 of 10

3. For an atom of hydrogen atom the radius of the first orbit is given by:
1.
2.
3.
4.

Question 3 of 10

Question 4 of 10

4. The Balmer series is obtained when all the transition of electron terminate on:
1.
2.
3.
4.

Question 4 of 10

Question 5 of 10

5. Target material used in X-rays tube must have following properties:
1.
2.
3.
4.

Question 5 of 10

Question 6 of 10

6. According to Bohr’s theory the radius of quantized orbit is given by:
1.
2.
3.
4.

Question 6 of 10

Question 7 of 10

7. Laser is device which can produce:
1.
2.
3.
4.

Question 7 of 10

Question 8 of 10

8. In the Bohr’s model of the hydrogen atom, the lowest orbit corresponds to:
1.
2.
3.
4.

Question 8 of 10

Question 9 of 10

9. In accordance with Bohr’s theory the K.E, of the electron is equal to:

1.
2.
3.
4.

Question 9 of 10

Question 10 of 10

10. Frequency of X-rays depends upon:
1.
2.
3.
4.

Question 10 of 10


 

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