Now take plastic rod. Rub one of its ends against a woollen cloth. Bring that end near the suspended glass rod. Now what do you see?

Rub one end of a glass rod against a silk cloth. Due to the rubbing a small charge will get transferred from one object to the other. As a result both the objects will become somewhat charged. Suspend this rod freely in air with the help of a thread. Now charge another glass rod in the same manner and bring it near the suspended tod. What do you see?

Let’s try this : Fix a powerful bar magnet to a stand as shown in the figure. Fix an iron bar at a short distance below the magnet. Take iron filings near the iron bar. What do you see ?

Take the inside tray of a used up match box and place a small magnetic needle inside the tray . Now take a long connecting wire and wind it around the tray . Complete the electric circuit ny connecting in it , this wire , electric cell , plug key and a bulb as shown in the below figure .: Mark the position of the magnetic needle . take a bar magnet near to the magnetic needle .: What do you observe ? :

Apparatus: Bars of stainless steel, aluminium and copper, a candle, a burner, pins, etc. : Procedure: Take stainless steel (or iron), copper and aluminium bars, each about 30 cm long and having the same shape. Apply wax spots with the help of candle at a distance of 2 cm from each other on all the three bars. Stick a pin in each of these spots so that it is upright. Now insert the ends of all three bars into a flame at the same time. for a while. What do you see? From which bar do the pins start falling first? Why?

Answer the following questions: place a clock near the end of the tubes and try to hear the ticking of the clock at the end of the other tube by placing your ear there. what do you observe?

Take a small stone. Hold it in your hand. What are the forces acting on the stone ? Now release the stone. What do you observe ? What are the forces acting on the stone after you release it ?

Take a small stone . Hold it in your hand. What are the forces acting on the stone? Now release the stone . What do you observe? What are the forces acting on the stone after you release it ?