important questions for class 12 physics with answers pdf
15. COMMUNICATION SYSTEMS ( SHORT QUESTION ANSWER 2022 )
15. COMMUNICATION SYSTEMS Q.1. Explain the following terms : (i) Ground waves (ii) Sky waves (iii) Space waves Ans ⇒…
Read More »14. SEMI CONDUCTOR ELECTRONICS : MATERIALS, DEVICES & SIMPLE CIRCUITS TILE ( SHORT QUESTION ANSWER 2022 )
14. SEMI CONDUCTOR ELECTRONICS : MATERIALS, DEVICES & SIMPLE CIRCUITS TILE Q.1. Distinguish between an intrinsic semiconductor and p-type semiconductor.…
Read More »13. NUCLEI ( SHORT QUESTION ANSWER 2022 )
13. NUCLEI Q.1. Define binding energy of a nucleus. Ans ⇒ It is defined as the amount of work done…
Read More »12. ATOMS ( SHORT QUESTION ANSWER 2022 )
12. ATOMS Q.1. State Bohr’s frequency condition. Ans ⇒ It states that the frequency v of a radiation emitted on…
Read More »11. DUAL NATURE OF MATTER AND RADIATION ( SHORT QUESTION ANSWER 2022 )
11. DUAL NATURE OF MATTER AND RADIATION Q.1. Draw the graphs showing the variations of photo-electric current with anode potential…
Read More »10. WAVE OPTICS ( SHORT QUESTION ANSWER 2022 )
10. WAVE OPTICS Q.1. Two electric lines of force cannot intersect each other. Why ? Sketch the lines of force…
Read More »9. RAY OPTICS AND OPTICAL INSTRUMENTS ( SHORT QUESTION ANSWER 2022 )
9. RAY OPTICS AND OPTICAL INSTRUMENTS Q.1. (a) When a low flying aircraft passes overhead, we sometimes notice a slight…
Read More »8. ELECTROMAGNETIC WAVES ( SHORT QUESTION ANSWER 2022 )
8. ELECTROMAGNETIC WAVES Q. 1. State the principle of production of em waves. Ans ⇒The accelerated charge produces electric and…
Read More »7. ALTERNATING CURRENT ( SHORT QUESTION ANSWER 2022 )
7. ALTERNATING CURRENT Q.1. What are advantages and disadvantages of a.c. over d.c. ? Ans ⇒ Advantages of a.c. over…
Read More »6. ELECTROMAGNETIC INDUCTION( SHORT QUESTION ANSWER 2022 )
6. ELECTROMAGNETIC INDUCTION Q.1. What are the advantages or application of eddy currents ? Ans ⇒ Following are the advantages…
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