Graph Numerical of Electron and Photon || Very Important Question 🔥🔥|| Class 12 || In Nepali ||

QUESTION TEXT:-
👉In an experiment on photoelectric effect, the graph between maximum kinetic energy (Kmax) and frequency of emitted photoelectron from metal surface is found to be a straight line as shown in fig. Calculate
↪️threshold frequency.
↪️work function of metal in electron volt.
↪️Planck's constant and maximum kinetic energy of the emitted electron by light of frequency v=8×10^14 s^(-1).
II Numerical problem Explained in Nepali II
Questions related to semiconductors
➡️ How is forward biasing different from reverse biasing in a p-n junction diode?
➡️ How are X-rays produced?
➡️ Draw the circuit diagram of a full wave rectifier. Explain its working principle. Show the input wave forms given to the diodes D1 and D2 and the corresponding output wave forms obtained at the load connected to the circuit.
➡️ Draw the circuit diagram of a half wave rectifier and explain its working
➡️Write the important properties of photons which are used to establish Einstein’s photoelectric equation.
↪️Use this equation to explain the concept of
↪️Threshold frequency and
↪️Stopping potential.
frequently asked Derivations from this chapter
↪️state and explain Braggs Law.
↪️using Bohr's postulates find the radius of Nth or 3rd orbit of hydrogen atom
↪️ using Bohr's postulates find the Energy level of hydrogen atom
↪️full wave and Half wave rectifiers.
↪️advantages and disadvantages of half wave and full wave rectifiers.
↪️why Zener diode is Known as voltage regulator.
↪️Describe briefly three experimentally observed features in the phenomenon of photoelectric effect. Discuss briefly how wave theory of light cannot explain these features.
↪️what is Bohr's frequency. write down any three postulates of Bohr's atomic model.
↪️State and explain de-Broglie hypothesis.
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