Answers

Solutions to HC Verma’s Concepts of Physics – Weblinks

We found the following website links which offer solutions to HC Verma’s Concepts of Physics.

Though there are some errors and omissions, these links will help at least get ideas which lead towards the solution. Students are advised to try to solve the problems themselves and consult the solution only if they are not getting the correct answer. Please satisfy your own knowledge and understanding before believing on any online solutions.

Please bring to our notice if you find any error in these online solutions.

Weblinks for Solutions to H C Verma’s Concepts of Physics

1. http://www.scribd.com/doc/52121841/Solutions-to-Concepts-of-Physics-by-HC-Verma-Chapter-5
2. http://www.scribd.com/doc/61351669/Solutions-to-Concepts-of-Physics-by-HC-Verma-Chapter-6
3. http://www.scribd.com/doc/61351011/Solutions-to-Concepts-of-Physics-by-HC-Verma-Chapter-8
4. http://www.scribd.com/doc/43123490/Solutions-to-Concepts-of-Physics-by-HC-Verma-Chapter-10
5. http://www.scribd.com/doc/49080270/Solutions-to-Concepts-of-Physics-by-HC-Verma-Chapter-12
6. https://sites.google.com/site/physicsclassroomonline/h-c-verma-concepts-of-physics-chapter-wise-solutions
7. http://www.youtube.com/playlist?list=PLDF8104B8EFE417FC

DOWNLOAD COMPLETE SOLUTIONS IN PDF FORMAT HERE

Random collection of Physics Viva Questions

1. State the Principle of a potentiometer. (The students say that potential drop is proportional to length but the constant quantities are not mentioned)
2. How can we increase the sensitivity of a potentiometer?
3. Define figure of merit of a galvanometer.
4. Which has more resistance – a galvanometer or a milliammeter?
5. How does an LED emit light?
6. What is the difference between an ordinary diode and an LED?
7. Define principal axis of a convex lens?
8. What happens to the focal length of a concave mirror if it is immersed in water?
9. What are the factors affecting the internal resistance of a cell?
10. What are the difference between primary and secondary cell?
11. Why can’t we use a dry cell for starting a car?
12. What happens to the resistivity of a wire when it is doublefolded?
13. How does the resistance of a wire depend on its dimensions?
14. Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,2000,5000 etc?
15. Why constantan or manganin wires are used for making the resistance coils in resistance box?
16. What is a standard resistance?
17. What are the characteristics of a standard resistance?
18. What are the precautions to be observed while doing electricity experiments in general?
19. What is a galvanometer?
20. What is the resistance of an ideal ammeter?
21. Why is ammeter always connected in series and voltmeter always connected in parallel?
22. How can we convert a galvanometer into an ammeter or a voltmeter?
23. What is shunt?
24. What is AVO meter?
25. What is the effect of temperature on the resistance of a conductor?
26. Why does the resistance of a conductor increases with temperature, whereas that of a semiconductor decreases with temperature.
27. What is conductance?
28. What are non ohmic devices? give an example.
29. What are superconductors?
30. Define emf
31. Why emf is said to be a misnomer?
32. What happens if the battery used in the primary circuit of a potentiometer has less emf compared to the emf of the cell used in the secondary circuit?
33. If you find that the galvanometer reading is shaky, what error can you expect?
34. What do you mean by figure of merit of a galvanometer?
35. Why a moving coil galvanometer is called so?
36. What is the principle of a galvanometer?

What is impact parameter?

Impact parameter is the perpendicular distance between the velocity vectors of two objects (considered to take part in a collision) when they are at infinite distance (at such a distance that there is no interaction between the two particles)

In Rutherford’s alpha scattering experiment, the gold nucleus is at rest and therefore, in this case

Impact parameter is the perpendicular distance between the gold nucleus and the the direction of the velocity vector of alpha particle when the alpha particle is at infinite distance (i.e; the force of interaction between the gold nucleus and the alpha particle is negligibly small)