B.Sc. SEM-4 Physics

Physics-4

v     Imp questions

v     All page no. –bharat text book

under line questions is most imp

          2-mark

1.Discuss:-Frounhofer’s diffraction-->1.3

2.Uses of solar cell-->8.12

3.Application of ‘LASER’-->2.30

4.Explains ‘feedback’

5.What is modulation ?-->5.4

6.Type of FEJ-->6.2

7.Pinch of voltage (Vp)-->6.9

8.Type of modulation ?-->5.4&5.6

9.Pumping in laser?-->2.14

10.    LC oscillator

11.    Barkhausen criterion-->4.7

         

          3-mark

1.            Discuss smoke detector -->8.18

2.            Phase shift oscillator-->4.15

3.            Hartly oscillator-->4.11

4.            Colpit’s oscillator-->4.10

5.            Wien bridge oscillator-->4.16

6.            Explain:-OR,NOT,AND gate -->7.7 to7.10

7.            Write:-de morgan’s theorem-->7.23

8.            Theory of zone plate-->1.7

9.            Advantages of fiber optics-->3.16

10.   Construction and working solar cell-->8.9

11.   Photo transistor -->8.2

12.   Boolean expression?-->7.17

13.   Advantages of JFET-->6.10

14.    NA for step index fiber -->2.13

          5-mark

  1.The light dependent resistor (LDR)-->8.16

  2.Write note on field effect transistor-->6.2

  3.Explain:-NAND gate-->7.13

  4.Ruby & HE-NE laser-->2.19&2.23

  5.Acceptance angle of optical fiber -->3.5

  6.Construction and working of UJT-->6.15

  7.Discuss encoder and decoder-->7.15

  8.What is demodulation? Explain AM diode in  detail -->5.10&5.12 

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