Physics Important Question Bank for Madhya Pradesh HSSC 12th (HSC) Board Exam 2019

1. Describe the use of NPN transistor as an oscillator
2. Describe the use of NPN transistor as an amplifier in common emitter mode and find the expressions of current gain, voltage gain & power gain.
3. What is Brewster’s law proves that reflected ray & refracted ray are mutually perpendicular at Brewster’s angle.
4. What is Polaroid/ write its construction, Working process a uses. Establish the relation between focal length and radius of curvature of a spherical mirror.
5. Describe the cerement to fine the focal length of a convex lens by displacement method under following headings.
6. What are amplitude modulation and frequency modulation? Write down any three differences between them
7. Write down any 5 differences among conductors, insulators and semiconductors
8. Write the laws of photo electric emission
9. What is resolving limit and resolving power of telescope? How the resolving power of microscope is increased?
10. What is compound microscope? Find its formula of magnifying power when final image appears at least distance of clear vision.
11. Write coulomb’s law and define unit charge by expression.
12. Find the expression of electric capacity of a spherical conductor and write the factors affecting its capacity.
13. What is Van-de-Graff generator? Write it’s working by making clean line diagram of it.
14. Explain charging & discharging procedure of lead accumulator by chemical equation and required line diagrams.
15. Write bio-savart’s law relating to magnetic effect of current
16. What is magnetic line of prove? Write its properties.
17. Write Faraday’s laws of electromagnetic induction and calculate induced e.m.f
18. What is transformer? What are its types? Find the expression of its transformation ratio.
19.  What are electromagnetic waves? Write its properties.
20. Find the relationship between height of TV antenna &its transmission range
21. What is interference of light? How many types of interferences are there? Find the require conditions to obtain it.
22. What is critical angle? Find the relationship between critical angel and refractive index of the medium
23. What is cyclotron? Write its working procedure & calculate its frequency.
24. What is parallel combination of cells? Calculate resultant capacity of this combination & find whether it will be profitable.
25. What is deviation? Without dispersion? Find its condition and calculate total deviation.
26. Write principle of Wheatstone’s bridge and establish required formula P/Q=R/S.
27. Derive the formula of refractive index µ=sin {(A+8)/2}/sin (A/2) of substance of a glass prism.
28. What is deviation? Without dispersion? Find its condition and calculate total deviation.

29. What is laser? Write down its merits and uses.
30. What are de-Broglie wave and its hypothesis?

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