Home
Class 12
PHYSICS
A sudden drop in the mercury level by 10...

A sudden drop in the mercury level by 10 mm or more is a sign of

A

Storm

B

Flood

C

Snow fall

D

Rain

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

What do the following indicate in a barometer regarding weather : (a) gradual fall in the mercury level, (b) sudden fall in the mercury level, (c ) gradual rise in the mercury level ?

The interanal radius of one limb of a capillary U- tube is r_(1) = 1 mm and the internal radius of the second limb is r_(2) = 2 mm , the tube is filled with same mercury, and one of the limbs is connected to a vecuum pump. The surface tension & density of mercury are 480 "dyn"//"cm" & 13.6 gm//cm^(3) respectively (assume contact angle to be theta = 180^(@) ) (g = 9.8 m//s^(2) ) What will be the difference in air pressure when the mercury levels in both limbs are at the same height ?

A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm ? Given : density of mercury = 13.6 xx 10^3 "kg m"^(-3) and density of water = 10^3 "kg m"^(-3) .

What will the effect on the temperature, if the number of small drops of mercury coalesce adiabatically to form a single drop?

A cup contains some mercury in it. Now a narrow glass tube is lowered in the mercury. After some time the mercury level in the tube becomes lower than the mercury level outside the tube as shown in diagram. During this process (Choose correct statements)

A barometer tube reads 76 cm of mercury. If the tube is gradually inclined keeping the open end immersed in the mercury reservoir, will the length of mercury column be 76 cm, more than 76 cm or less than 76 cm?

Explain why does the mercury level in a barometer go down when atmospheric pressure decreases?

The difference in the heights of mercury levels in an open end manometer connected to a gas chamber is found to be 175 mm. If the height of mercury level in the smaller limb is more as compared to that in the longer limb and the atmospheric pressure is 755 mm, what is the pressure of the gas ?

A quantity of gas is collected in a gradutated tube over the mercury. The volume of the gas at 20^(@)C is 50.0 mL and the level of the mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 mm . Volume at STP is

A sudden drop in blood pressure may occur in an anaphylactic reaction.