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cds- Question :

A liquid is kept in a regular cylindrical vessel up to a certain height. If vessel up to a certain height. If this vessel is replaced by another cylindrical vessel having half the area if cross-section of the bottom, the pressure on the bottom will

A :

remain unaffected

B :

be reduced to half the earlier pressure

C :

be increased to twice the earlier pressure

D :

be reduced to one-fourth the earlier pressure

cds- Question :

It is difficult to cut things with a blunt knife because

A :

the pressure exerted by knife for a given force increases with increase in bluntness

B :

a sharp edge decreases the pressure exerted by knife for a given force

C :

a blunt knife decreases the pressure for a given force

D :

a blunt knife decreases the area of intersection

cds- Question :

The pressure exerted on the ground by a man is greatest

A :

when he lies down on the ground

B :

when he stands on the toes of one foot

C :

when he stands with both feet flat on the ground

D :

all of the above yield the same pressure

cds- Question :

Which type/types of pen uses/use capillary action in addition to gravity for flow of ink

A :

Fountain pen

B :

Ballpoint pen only

C :

Gel pen only

D :

Both ballpoint pen and gel pen

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