# Sample Paper Class 12th Physics

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Sample Paper Class 12th Physics

ANNUAL EXAMINATION

PHYSICS- 12TH                                                   TIME -3 HOURS

SET-A                                                            MAX. MARKS- 75

MIN. MARKS- 27

NOTE:READ THE INSTRUCTION CAREFULLY BEFORE ATTEMPTING THE QUESTION.

ATTEMPT ALL OBJECTIVE TYPE QUESTION  EACH OF 1 MARKS.

Q.1  ACCORDING TO OHMS LAW WHICH IS NOT CORRECT:

a) V=IR

b) R=V2/P

c) P=V/I

d) I=V/R

Q.2 WHICH CAPACITOR IS POLARITY DEPENDENT:

a) CERAMIC

b) ELECTROLYTIC

C) FILM CAPACITOR

d) BOTH b and c.

Q.3 ACCORDINGTO  KCL WHICH IS CORRECT:

a) CURRENT AT ANY POINT IS EQUAL TO INCOMING CURRENT AND HALF OF OUTGOING CURRENT.

b)THE SUM OF ALL CURRENT AT ANT POINT IS EQUAL TO 1

c) THE SUM OF ALL CURRENT  AT ANY POINT IS EQUAL TO ZERO.

d)THE CURRENT AT ANY POINT IS  EQUAL TO ITS LOOP CURRENT.

Q.4 THE RANGE OF TUNED AMPLIFIER DETECTOR IS :

a) 0  TO  100 KHZ

b) MORE THAN 100 KHZ

c) 20 T0 200 KHZ

d) MORE THAN 200KHZ

Q.5 WHICH GATE  GIVES THE OUTPUT  HIGH  WHEN ONE OF ITS INPUT IS LOW AND OTHER IS HIGH.

a) AND GATE

b) OR GATE

c) EX-OR GATE

d) EX –NOR GATE

*ATTEMPT  8 QUESTIONS OUT OF 10 EACH OF 5 MARKS.

Q.1 EXPLAIN BIOT SAVART LAW AND ITS APPLICATION.

Q.2 EXPLAIN IN BRIEF THE APPLICATION OF GAUSS LAW?

Q.3 WHAT DO YOU MEAN BY LENZ LAW?

Q.4 EXPLAIN THE DE BROGLIE RELATION?

Q.5 EXPLAIN 2 OUT 0F 3:
a) ZENER DIODE

b)LED

c)P-N DIODE

Q.6 DRAW THE I-V CHARACTERISTICS OF PN DIODE IN BOTH MODE?

Q.7 EXPLAIN THE DIPLOE MOMENT?

Q.8 DIFFERENCE BETWEEN CONCAVE AND CONVEX LENS?

Q.9 DRAW THE TRUTH TABLE OF ALL GATE?

Q.10 EXPALIN POLARISATION?

*ATTEMPT 3 QUESTION OUT OF 4 EACH OF 10 MARKS;

Q.1 EXPLAIN VAN DE GRAAFF GENERATOR WITH NEAT AND CLEAN DIAGRAM?

Q.2 EXPLAIN PARA ,DIA AND FERRO MAGNETIC SUBSTANCE WITH EXAMPLE?

Q.3 EXPLAIN WHEAT STONE BRIDGE AND DRIVE ITS BALANCING EQUATION?

Q.4 EXPALIN RUTHER AND BHOR MODEL?