Speed of Efflux
- The maximum value of x is H.
- x is maximum for y=H2.
- If y is increased from zero to H, x will first increase and then decrease.
- The maximum value of x will depend on the density of the liquid.
Water and mercury are filled in two cylindrical vessels up to same height. Both vessels have a hole in the wall near the bottom. The velocity of water and mercury coming out of the holes are v1 and v2 respectively.
v1 = v2.
v1 = 13.6 v2.
v1 = v2/13.6.
There is a small hole near the bottom of an open tank filled with a liquid. The speed of the water ejected does not depends on
area of the hole
density of the liquid
Height of the liquid from the hole
acceleration due to gravity
When a rod is heated but prevented from expanding, the stress developed is independent of
Material of the rod
Rise in temperature
Length of rod
None of above
A uniform steel wire of cross-sectional area 0.20 mm2 is held fixed by clamping its two ends. Find the extra force exerted by each clamp on the wire if the wire is cooled from 100∘C to 0∘C. Young's modulus of steel = 2.0 × 1011 N/m2. Coefficient of linear expansion of steel = 1.2 × 10−5/∘C.
Which of the following arrangements of a wire clamped on two walls will cause an additional stress within the wire?
A piece of wire clamped between two clamps is heated up
A piece of wire clamped between two clamps is cooled down
Both (a) and (b)
Neither (a) nor (b)
There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm (1 atm = 105N/m2) then the velocity of water flowing from hole is
None of these