Magnetising Iron Bar

#Magnetizing_Ironbar 

Magnetizing a Soft Iron Bar with the Strong Permanent Bar magnet

1. When Strong Permanent Bar magnet is away, all tiny magnetic dipoles in Fe are
   oriented in different directions, with out any alignment

2. When Strong Permanent Bar magnet approaches closely, all tiny magnets align 
   in the same direction of the Permanent magnet so that all S-pole directed towards
   the N-Pole

Gausse's theorem - Animation

# ELECTROSTATICS  #Gausses_theorem

Gauss's Law

Gauss's theorem in electrostatics states that the total electric flux through any closed surface is equal  1/ ε₀ times the net charge enclosed 

Electric field lines from a point charge. The charge is placed at the center of an imaginary sphere ( Gaussian Sphere). Electric field lines start from  positive charge at center and penetrates out through the surface of the sphere.  Here All lines ( 8 lines ) are passing perpendicular to the surface, so we can Count them for FLUX THROUGH THE SURFACE.  Here flux through the surface is 8

DHSE Physics Practicals

 

Cycle 3 - Physics Practical

1. Concave Mirror

Aim

1. Find focal length of concave Mirror using u - v method

2. Find focal length of concave Mirror using u v graph

3. Find focal length of concave Mirror using 1/u - 1/v graph

4. Find focal length of concave Mirror using distant object method

5. Find focal length of concave Mirror by Normal Incidence method

2. PRISM

Aim

1. Drawing i - d curve, find angle of minimum deviation 

2. Find refractive index of material of Prism

3. Convex Mirror

Aim

1. Find focal length of concex mirror using convex lens

4. Resonance Column

Aim

1. Find velocity of sound at room temperature  , Vt 

2. Find velocity of sound at zero degree celsius   , Vo

3. Find Unknown frequency of turning fork

5. Ohms Law II

Aim

1. Very ohms law, in combination of resistance 

a) In series

b) In parallel

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Cycle 2 - Physics Practical

 

1. MOMENT BAR

Aim

1. To find unknown mass using moment bar

2. HELICAL SPRING II

Aim

1. To find spring constant of the spring using Oscillation method

3. CONVEX LENS

Aim

1. Find focal length of convex lens using u - v method

2. Find focal length of convex lens using u v graph

3. Find focal length of convex lens using 1/u - 1/v graph

4. Find focal length of convex lens using distant object method

5. Find power of convex lens

4. LIQUID LENS

Aim

1. To find Focal length of Liquid lens

5. OHM'S LAW

Aim

1. To find Resistance of wire using Ohm's law

2. To find Resistance of wire using V - I  graph

3. To find Resistivity and Conductivity  of wire

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Expt1: Vernier Calipers

Write on Right Side of Page

Write on Left Side of Page

VERNIER CALIPER TEACHING VIDEO

Physics Practical Cycles - HSEII

 

 Physics Practical

• WRITE ON A 200 PAGE NOTE BOOK

• NAME THE BOOK AS "PHYSICS PRACTICAL ROUGH RECORD"

• COPY THE BELOW GIVEN, 5 EXPERIMENTS AND THEIR AIMS

1. VERNIER CALIPERS

Aim

1. To find volume of rectangular block and Cylinder
2. To find Internal volume of Calorimeter

2. SCREW GAUGE

Aim

1. To find diameter and Volume of given wire
2. To find area and volume of a glass plate

3 . HELICAL SPRING

Aim

1. Find Spring constant of spring using Load -extension method
2. Draw load - extension graph and find Spring constant from graph

4. SIMPLE PENDULUM

Aim

1. To find the relation between length and Period of a simple
Pendulum.
2. Find acceleration due to gravity using calculation
3. Find acceleration due to gravity from l / T2 graph
4. Find length of Second’s pendulum
5. Find length of pendulum having time period, 1.5 second
6. Find Period of pendulum having length 95 cm

5. PARALLELOGRAM LAW OF FORCES

Aim

1. Find mass of a given body , by parallelogram law
Apparatus