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Lightning : Introduction

Oppositely ch...

Question

Oppositely charged clouds, coming closer to each other, cause:

A

induction

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B

conduction

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C

lightning

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D

none of the above

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Solution

The correct option is C lightning
Lightning is sudden electrostatic discharge between an electric charged region of a cloud or between two clouds.When oppositely charged clouds comes near to each other,charge gets accumulated in large numbers and air present no longer resists their flow.Negative and positive charges meets producing streaks of bright light called lightning.

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The clouds consists of charged particles of water dispersed in air. Some of them are positively charged, others are negatively charged. When positively charged clouds come closer, they cause lightening and thundering whereas when positive and negative charged colloids come closer, they cause heavy rain by aggregation of minute particles. It is possible to cause artificial rain by throwing electrified sand or silver iodide from an aeroplane and thus, coagulation the mist hanging in air.

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The clouds consists of charged particles of water dispersed in air. Some of them are positively charged, others are negatively charged. When positively charged clouds come closer, they cause lightening and thundering whereas when positive and negative charged colloids come closer, they cause heavy rain by aggregation of minute particles. It is possible to cause artificial rain by throwing electrified sand or silver iodide from an aeroplane and thus, coagulation the mist hanging in air.

AgI helps in artificial rain because :

The clouds consist of charged particles of water dispersed in the air. Some of them are positively charged, others are negatively charged. When positively charged clouds come closer, they cause lightning and thundering whereas when positive and negative charged colloids come closer, they cause heavy rain by aggregation of minute particles. It is possible to cause artificial rain by throwing electrified sand or silver iodide from an aeroplane and thus, coagulation the mist hanging in the air.

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Q. Lightning is caused due to discharge of oppositely charged clouds. Give reason.

Q. Accumulation of charges causes ________ in the clouds.

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