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When a glass rod is rubbed with a piece of silk cloth, the rod

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Important Questions on Some Natural Phenomenon

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Science>Physics>Some Natural Phenomenon>Charge
A body can be negatively charged by
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Science>Physics>Some Natural Phenomenon>Charge
Lightning conductor is used in tall buildings
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Science>Physics>Some Natural Phenomenon>Charge
A positively charged object repels another charged object kept close to it. What is the nature of charge on the other object?
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Science>Physics>Some Natural Phenomenon>Charge
A charged object attracts an uncharged object by producing opposite charges in the nearer end of the uncharged object by the process of
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Science>Physics>Some Natural Phenomenon>Charge
Explain why, sometimes when we take off the woollen sweater or a polyester shirt in a dark room, we can see tiny sparks of light and hear a crackling sound.
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Science>Physics>Some Natural Phenomenon>Charge
A glass rod is rubbed with a silk cloth and an inflated rubber balloon is rubbed with a woollen cloth. Now, out of glass rod, silk cloth, rubber balloon and woollen cloth which two objects acquire positive charge?
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Science>Physics>Some Natural Phenomenon>Charge
What is an electroscope? Draw a labelled diagram of an electroscope and explain its working.
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Science>Physics>Some Natural Phenomenon>Charge
A negatively charged object repels another charged object held near it. What is the nature of charge on the other object?
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Science>Physics>Some Natural Phenomenon>Charge
An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?
(a) Inflated rubber balloon (b) Woollen cloth (c) Ballpoint pen refill (d) Polythene bag
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Science>Physics>Some Natural Phenomenon>Charge
What will you observe when the metal top of an electroscope is touched with a plastic comb rubbed in dry hair? Give a reason for your answer.
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Science>Physics>Some Natural Phenomenon>Charge
When a plastic comb is rubbed with dry hair, the hair gets positively charged by friction. In this process:
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Science>Physics>Some Natural Phenomenon>Charge
What happens when we touch the metal top of a charged electroscope with our finger? What is this process known as?
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Science>Physics>Some Natural Phenomenon>Charge
Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by a charged balloon.
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Science>Physics>Some Natural Phenomenon>Charge
Which of the following cannot be charged by friction, if held by hand?
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Science>Physics>Some Natural Phenomenon>Charge

What will you observe when the metal top of an electroscope is touched with a positively charged object?

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Science>Physics>Some Natural Phenomenon>Charge
The device used for detecting charge (positive or negative) on an object is called:
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Science>Physics>Some Natural Phenomenon>Charge
Explain why a charged body loses its charge when we touch it with our hand.
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Science>Physics>Some Natural Phenomenon>Charge
How will you find out whether an object is charged or not?
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Science>Physics>Some Natural Phenomenon>Charge
Cotyledons are also called-
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Science>Physics>Some Natural Phenomenon>Charge
When an object gets negatively charged by the process of friction, then: