The tremendous electric charges in the atmosphere which produce sheet lightning in the clouds are produced by the process of :

(a) friction (b) induction (c) conduction (d) convection

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Solution

(a) friction

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A charged object attracts an uncharged object by producing opposite charge in the nearer end of the uncharged object by the process of:

(a) electric potential (b) electric induction

Question 2
Acid rain happens because

(a) sun leads to heating of the upper layer of atmosphere
(b) burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
(c) electrical charges are produced due to friction amongst clouds
(d) earth atmosphere contains acids

Q. Question 2
Acid rain happens because

(a) sun leads to heating of the upper layer of atmosphere
(b) burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
(c) electrical charges are produced due to friction amongst clouds
(d) earth atmosphere contains acids

Q. During storms clouds get changed. The dielectric breakdown of air is

3 \times 10^{6}

V/m and there is a cloud of area

0.5 k m^{2}

which is 500 m above ground. This cloud induces an opposite charge on ground due to which this cloud-ground system behaves as a parallel plate capacitor.

Lightning can ever burn up a tree. Lightning contains a tremendous amount of :

(a) heat energy (b) electric energy (c) chemical energy (d) nuclear energy

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The tremendous electric charges in the atmosphere which produce sheet lightning in the clouds are produced by the process of : (a) friction (b) induction (c) conduction (d) convection

(a) friction

The tremendous electric charges in the atmosphere which produce sheet lightning in the clouds are produced by the process of :

(a) friction (b) induction (c) conduction (d) convection