My Report

Physics – Class 12 Practice Test 8


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. The stopping potential in an experiment on the photoelectric effect is 1.5 V. What is the maximum kinetic energy of the photoelectrons emitted?

2. What is the de – Broglie wavelength associated with an electron, accelerated through a potential difference of 200 volts?

3. If the intensity of incident radiation in a photo-cell is increased, how does the stopping potential vary?

4. A hydrogen atom in its ground state absorbs 10.2 eV of energy. What is the orbital angular momentum is increased by?

5. What will be the angle of refraction in the glass, if the polarization angle for the air-glass interface is 63.8o?

6. If the wavelength of electromagnetic radiation is doubled, what will happen to the energy of photons?

7. According to Bohr’s principle, what is the relation between the principal quantum number and the radius of the orbit?

8. What is the ratio of minimum to maximum wavelength in the Balmer series?

9. The stopping potential in photoelectric emission does not depend upon the frequency of the incident radiation.

10. What would be the resultant intensity at a point of constructive interference, if there are two identical coherent waves of intensity I' producing an interference pattern?


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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