Science M.C.Q. [I MARKS]

Two vessels, A and B, contain water up to the same level as shown in the Figure. PA and PB are the pressures at the bottom of the vessels. FA and FB are the forces exerted by the water at the bottom of the vessels A and B.

A water tank is placed on the roof of a building at a height ‘H’. To get water with more pressure on the ground floor, one has to

A rubber sucker (M) is pressed on a flat smooth surface, and an identical sucker (N) is pressed on a rough surface.

Look at the Figure carefully. Vessel R is filled with water. When pouring of water is stopped, the level of water will be __________

A cyclone is caused by the spinning system of

Cyclones are large storms that form over

Thunderstorm is known as Bordoisila in

A sudden flow of charges takes place, producing a bright flash of light called

During the daytime in coastal areas, sea breeze results because

Assertion (A): The base of the dam is kept narrower than the top to keep the dam strong to hold a huge amount of water.
Reason (R): The water stored in the dam exerts pressure horizontally on the side walls of the dam and vertically on the floor due to the height of the water level. The pressure that acts horizontally is very large near its bottom.

Assertion (A): We feel more comfortable carrying a bag with broad straps as compared to a bag of the same weight with narrow straps.
Reason (R): Broad straps reduce the pressure exerted by the bag on our shoulders as compared to narrow straps.

When the cyclone reaches land, the source of moist air is cut off, and it gradually

In a cyclone, the region of the lowest pressure is at the centre, known as:

During lightning, we should protect ourselves by

In Kerala, Karnataka, and Tamil Nadu, thunderstorms are known as:

Lightning can occur as opposite charges collide

High-speed winds can

SI unit of pressure is: