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Modern Physics Test 2 Online MCQs

Test Name Modern Physics Test 2
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Get the knowledge of Modern Physics in the form of multiple choice questions Test for the recruitment test, all admission test, mock quiz, MCAT and engineering test preparation.

Modern Physics Test 2 Online MCQs


1. Photoelectrons are being obtained by irradiating zinc by a radiation of 3100 Å. In order to increase the kinetic energy of ejected photoelectrons


Question 1 of 15

2. In photoelectric effect, the photoelectric current

Question 2 of 15

3. If the distance of 100 watt lamp is increased from a photo cell, the saturation current ‘i’ in the photo cell varies with distance‘d’ as


Question 3 of 15

4. Photoelectric effect can be explained by assuming that light

Question 4 of 15

5. Which of the following characteristics of photoelectric effect supports the particle nature of radiations.


Question 5 of 15

6. For the first member of Balmer series of hydrogen spectrum, the wavelength is λ. What is the wavelength of the second member?


Question 6 of 15

7. In photoelectric effect, the current

Question 7 of 15

8. Which one of the following is incorrect statement about a photon?

Question 8 of 15

9. The dynamic mass of the photon is given by


Question 9 of 15

10. A metallic surface has a threshold wavelength 5200 Å. This surface is irradiated by monochromatic light of wavelength 4500 Å. Which of the following statements is true?

Question 10 of 15

11. The study of photoelectric effect is useful in understanding

Question 11 of 15

12. If the ionisation energy for hydrogen atom is 13.6 eV. The energy required to excite it from the ground state to the next higher state is nearly


Question 12 of 15

13. A photo cell is illuminated by small bright source placed 1 m away. When the same source of light is placed 2 m away. Which of the following in true about the electrons emitted by the photo cathode?

Question 13 of 15

14. Which of the following is not property of the photons?


Question 14 of 15

15. The ionization potential of hydrogen atom is 13.6 V. How much energy need to be supplied to ionize the hydrogen atom in the first excited state?


Question 15 of 15


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