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Sahitya Bhawan CBSE class 12 physics Lab Manual with theory and Viva-voce questions as per syllabus

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Edition 2021
Class 12
Subject Physics
Board CBSE
Author Divya Agrawal
Binding Hard bound
Pages 304
Language English
Country India
Series Title Sahitya Bhawan
Isbn 99789387666641

Product Features                                              

Sahitya Bhawan lab manual class 12 Physics practical book has been prepared in accordance with the CBSE guidelines. These lab manuals provide better understanding of various concepts in a lucid manner. The entire matter is prepared in a way that it provides complete understanding of each topic. Viva-voce helps the students in having a better understanding of concepts.

Content                                                                                       

General introduction : science and physics
Section : A
Experiment No. 1
To determine resistance per cm of a given wire
by plotting a graph of potential difference versus
current.
Experiment No. 2
To find the resistance of a given wire using Meter bridge and hence determine the specific
resistance of its material.
Experiment No. 3
To verify the law of combination (series) of resistances using a Meter bridge.
Experiment No. 4
To verify the law of combination (parallel) resistances using a Metre bridge.
Experiment No. 5
To compare the emfs of two given primary cells using potentiometer.
Experiment No. 6
To determine the internal resistance of a given primary cell using potentiometer.
Experiment No. 7
To determine the resistance of a galvanometer by half deflection method and to find its figure of merit.
Experiment No. 8
To convert a given galvanometer (of known resistance and figure of merit) into a voltmeter of desired range and to verify the same.
Experiment No. 9
To convert the given galvanometer (of known resistance and figure of merit) into an ammeter of desired range and to verify the same.
Experiment No. 10
To find the frequency of the a.c. mains with a Sonometer
Activity no. 1
To measure the resistance and impedance of an inductor with or without iron Core.
Activity No. 2
To measure resistance, voltage (ac / dc) current (ac) and check continuity of a given circuit using multi-multimeter.
Activity No. 3
To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power source.
Activity No. 4
To assemble the components of a given electrical circuit.
Activity No. 5
To study the variation in potential drop with length of a wire for a steady current.
Activity No. 6
To draw the diagram of a given open circuit comprising at least a battery, resistor/rheostat, key, ammeter and voltmeter. Mark the components that are not connected in proper order and correct the circuit and also the circuit diagram.
Aection : B
Experiment No. 1
To find the value of v for different value of u in case of a concave mirror and to find the
focal length.
Experiment No. 2
To find the focal length of a convex mirror, using a convex lens.
Experiment No. 3
To find the focal length of a convex lens by plotting graphs between u and v or between
1/u and 1/v.
Experiment No. 4
To find the focal length of a concave lens, using convex lens.
Experiment No. 5
To determine the angle of minimum deviation for a given prism by plotting a graph between
the angle of incidence and angle of deviation.
Experiment No. 6
To determine the refractive index of a glass slab using a travelling microscope.
Experiment No. 7
To find the refractive index of a liquid by using convex lens and plane mirror..
Experiment No. 8
To study the – characterstic curve of a p-n junction diode in forward bias and reverse bias.
Experiment No. 9
To draw the characterstic curves of a zener diode and to determine its reverse breaks down voltage.
Experiment No. 10
To determine the wavelength of a laser beam
by diffraction.
Activity no. 1
To identify a diode, an LED, a transistor, an IC,
a resistor and a capacitor from a mixed colle-
ction of such items.
Activity No. 2
Use of multimeter to :
(a) Identify base of transistor
(b) distinguish between n-p-n and p-n-p type transistors.
(c) see the unidirectional flow of current in case of a diode and an LED.
(d) check whether a given electronic compo-nent (eg. diode, transistor or IC) is in working order)
Activity No. 3
To study the effect of intensity of light (by varying distance of the source) on an LDR. 7
Activity No. 4
To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab.
Activity No. 5
To observe polarisation of light using two polaroids.
Activity No. 6
To observe diffraction of light due to a thin slit.
Activity No. 7(A)
To study the nature and size of the image formed
by a convex lens on a screen by using a candle
and a screen (for different distances of the
candle from the lens.).
Activity No. 7(B)
To study the nature and size of the image for-
med by a concave mirror on a screen by using
a candle and a screen (for different distances
of the candle from the lens.).
Activity No. 8
To obtain a lens combination with the specified focal length by using two lenses from the given
set of lenses.
investigatory Projects
project 1
To study the various factors on which the
internal resistance/EMF of a cell depends.
project 2
To study the variations in current flowing in
a circuit containing an LDR because of a vari-
ation in (a) the power of the incandescent
lamp, used to ‘illuminate’ the LDR (keeping
all the lamps at a fixed distance), (b) the
distance of a incandescent lamp (of fixed
power) used to ‘illuminate’ the LDR .
project 3
To find the refractive indices of (a) water
(b) oil (transparent) using a plane mirror,
an equiconvex lens (made from a glass of
known refractive index) and an adjustable
object needle. .
project 4
To design an appropriate logic gate combina-
tion for a given truth table . 88
project 5
To investigate the relation between the ratio
of (i) output and input voltage and (ii) number
of turns in the secondary coil and primary coil
of a self-designed transformer.. 90
project 6
To investigate the dependence of the angle of deviation on the angle of incidence using a
hollow prism filled one by one, with different transparent fluids . 91
project 7
To estimate the charge induced on each one of
the two identical styrofoam (or pith) balls suspendend in a vertical plane by making use
of Coulomb’s law. 93
project 8
To study the factor on which the self-inductance
of a coil depends by observing the effect of this coil, when put in series with a resistor (bulb) in
a circuit fed up by an A.C. source of adjustable frequency . 94
project 9
To study the earth’s magnetic field using a
tangent galvanometer. 95

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