Class 12 Physics Practical File

Class 12 ISC Physics Practical Experiments and Readings. ISC Physics Lab File: Here is my physics practical file for ISC Physics in this post. Whole lab manual. Jan 21, 2018 - Physics Practical File with Readings Class 12 CBSE 2017-2018 Saksham, Mittal EDU RESOURCES.

• To determine the resistance per unit length of a given wire by plotting a graph of Potential difference vs Current. • To determine resistance of a given wire using metre bridge& hence determine the specific resistance of the material. • To verify law of combination of resistance using metre bridge. • To compare EMF of two given Primary cells using a Potentiometer.

• To determine the internal resistance of given primary cell using a Potentiometer. • To find the value of v(Image Distance) for different values of u(Object Distance) of a concave mirror & to find the focal length by plotting graph between u &v or 1/u & 1/v. • To find the focal length of a convex lens by plotting graph between u &v or 1/u & 1/v. • To find the focal length of a Convex Mirror using Convex lens. • To find the focal length of a Concave lens using Convex lens. • To determine the angle of minimum deviation for a given glass prism by plotting a graph between the angle of incidence & the angle of deviation. • To draw the I-V Characteristic curve of a p-n junction diode in forward bias & reverse bias & to determine its static & dynamic resistance.

Dhairyam movie mp3 songs download. • To draw the I-V Characteristic curve of the given Zener diode in reverse bias. • To study the characteristic of a Common Emitter npn or pnp transistor & to find out values of current & voltage gains.

EXP-1> TO DETERMINE THE RESISTANCE PER CM OF A GIVEN WIRE BY PLOTTING A GRAPH OF POTENTIAL DIFFERENCE VERSUS CURRENT Materials Required: A Resistance wire, voltmeter, ammeter, battery, rheostat, meter scale, one way key, connecting wires etc. Theory: If I be the current flowing through a conductor & V be the potential difference across its ends, then according to Ohm’s law V∝I or V = RI Where, R is the constant of proportionality. It is known as resistance of the conductor. V/I=R R depends upon the nature of material, temperature & dimensions of the conductor. Procedure: 1. Clean the ends of the connecting wires with the help of sand paper in order to remove any insulating coating on them.

Connect various components - resistance, rheostat, battery, key, voltmeter and ammeter 3. Note whether pointers in milli-ammeter and voltmeter coincide with the zero mark on the measuring scale. If it is not so, adjust the pointer to coincide with the zero mark by adjusting the screw provided near the base of the needle using a screw driver.

Note the range and least count of the given voltmeter and milliammeter. Insert the key K and slide the rheostat contact to one of its extreme ends, so that current passing through the resistance wire is minimum. Note the milli-ammeter and voltmeter readings. Remove the key K and allow the wire to cool, if heated. Again insert the key. Shift the rheostat contact slightly to increase the applied voltage. Note the milli-ammeter and voltmeter reading.

Repeat step 7 for four different settings of the rheostat. Record your observations in a tabular form. OBSERVATIONS: 1. Range of ammeter = 0. Least count of ammeter =. Range of voltmeter = 0. Least count of voltmeter =.V 5.

Least count of meter scale =. Length of the given wire, l =.m RESULT: 1. Free download philippine map garmin gps.

The potential difference across the given wire varies linearly with the current. The resistance per unit length of the wire is (R ± ΔR) = (. ----------------------------------------------------------------------------------- EXP-2> TO DETERMINE RESISTANCE OF GALVANOMETER BY HALF DEFLECTION METHOD AND TO FIND ITS FIGURE OF MERIT. MATERIAL REQUIRED: A moving coil galvanometer, a battery or a battery eliminator (0 - 6 V), one resistance box (R-BOX 1) of range 0-10kΩ, one resistance box(R-BOX 2) of range 0-200 Ω, 2 one way keys, voltmeter, connecting wires and a piece of sand paper. Theory: Galvanometer is a sensitive device used to detect very low current.

Its working is based on the principle that a coil placed in a uniform magnetic field experiences a torque when an electric current is set up in it. The deflection of the coil is determined by a pointer attached to it, moving on the scale. When a coil carrying current I is placed in a radial magnetic field, the coil experiences a deflection θ which is related to I as I=k θ where k is a constant of proportionality and is termed as figure of merit of the galvanometer. Procedure: 1.