## Description

# PHYSICS LAB ACTIVITY BOOK 10+2

# AS PER LATEST SYLLABUS ISSUED BY CBSE-2019-20

## EXPERIMENTS:

**SECTION – A**

**1.**To determine resistance per cm of a given wire by plotting a graph of potential difference versus current.

**2.**To determine the specific resistance of material of wire using a metre bridge.

**3.**To verify the laws of combination (series/parallel) of resistance using metre bridge.

**4.**To compare the e.m.f. of two given primary cells by using potentiometer.

**5.**To determine the internal resistance of a primary cell using potentiometer.

**6.**To determine the resistance of galvanometer by half-deflection method and to find its figure of merit.

**7.**Given the resistance and figure of merit of a galvanometer, convert it into an ammeter voltmeter of a desired range and to verify the same.

**8.**To find the frequency of AC mains using a sonometer.

**ACTIVITIES (For the purpose of demonstration only)**

**1.**To measure the resistance and impedance of an inductor with or without iron core.

**2.**To measure resistance, voltage (AC/DC), current (AC) and check continuity of a given circuit using multimeter.

**3.**To assemble a household circuit comprising of three bulbs, three (on-off) switches, a fuse and a power source.

**4.**To assemble the component of a given electrical circuit.

**5.**To study the variation in potential drop with length of wire for a steady current.

**6.**To draw a given open circuit comprising of at least a battery, a rheostat/resistor key, ammeter and voltmeter. Mark the components that are connected in proper order and correct the circuit and circuit diagram.

**SECTION – B **

**1.**To find the value of v for different values of u in case of a concave mirror and find its focal length.

**OR**

To find the focal length of a concave mirror by u-v method using two needles.

**2.**To find the focal length of a convex lens by plotting of graphs between u & v and between 1/u & 1/v.

**3.**To find the focal length of convex mirror using a convex lens.

**4.**To find the focal length of a concave lens using a convex lens.

**5.**To plot the graph showing the variation of the angle of deviation with the angle of incidence using glass prism. Also determine the refractive index of the glass prism.

**6.**To determine refractive index of a glass slab using a travelling microscope.

**7.**(i) To find refractive index of liquid using a concave mirror.

(ii) To find refractive index of a liquid by using convex lens and plane mirror.

**8.**To draw l-V characteristic curve of a p-n junction in forward bias and reverse bias.

**9.**To draw the characteristics of Zener diode and to determine its reverse breakdown voltage.

**10.**To study the characteristic of a common emitter n-p-n or p-n-p transistor and to find out the value of current and voltage gains.

**ACTIVITIES (For the purpose of demonstration only)**

**1.**To study the effect of light on an L.D.R. (i.e. light dependent resistor).

**2.**To identify a diode, a transistor, LED, an IC (integrated circuit), a resistor and a capacitor from a mixed collection of such items.

**3.**Use of multimeter to

(a) Identify base of transistor.

(b) Distinguish between n-p-n and p-n-p type transistor

(c) See the unidirectional flow of current in case of diode and as LED.

**4.**To study refraction and lateral deviation of a ray of light passing through glass slab.

**5.**To observe the polarisation of light using two polaroids.

**6.**To observe diffraction of light due to a thin slit.

**7.**(i) To study the nature and size of the image formed by a convex lens. Using a candle and screen (for different distance of the candle from the lens).

(ii) To study the nature and size of the image formed by a concave mirror on a screen.

**8.**To obtain a lens combination with the specified focal length by using two lenses from the given set of lenses.

**Authors**

Savinder Singh **(M.Sc. M.Ed.)**

Narinder Singh **(M.Sc.,M.Ed.)**