Two tubes A and B of lengths 100 cm and 50cm have radii 0.1 mm and 0.2mm respectively. If a liquid passintg though the two tubes is of mercury, determine the pressure at the junction of A and B.

Two tubes A and B of length 80 cm and 40 cm have radii 0.1 mm and 0.2 mm respectively are connected in series end to end. If a liquid passing through tow tubes is entering A at a pressure of 82 cm of mercury and leaving B at a pressure of 76 cm of mercury. Find the pressure at the junction of A and B.

Two objects A and B are of lengths 5 cm and 7 cm determined with errors 0.1 cm and 0.2 cm respectively. What is the error in determining the total length?

Two capillary tubes of length 15 cm and 5 cm and radii 0.06 cmand 0.02 cm respectively are connected in series. If the pressure difference across the end faces is equal to pressure of 15 cm high water column, then find the pressure difference across the (i) first tube and (ii) second tube.

Two objects A and B are of lengths 5cm and 7cm determined with errors 0.1cm and 0.2cm respecitively. The error in determining (a) the total length and (b) the difference in their lengths are

Two capillary tubes of equal length and inner radii 2r and 4r respectively are added in series and a liquid flows through it. If the pressure difference between the ends of the whole system is 8.5 cm of mercury, find the pressure difference between the ends of the first capillary tube.

Two wires of the same material have length 6 cm and 10 cm and radii 0.5 mm and 1.5 mm respectively. They are connected in series across a battery of 16 V. the p.d. across the shorter wire is

Two capillary tubes of lengths in the ratio 2 : 1 and radii in the ratio 1 : 2 are connected in series. Assume the flow of the liquid through the tube is steady. Then, the ratio of pressure difference across the tubes is

The diameter of a horizontal tube at points A and B are 6 cm and 3 cm, respectively. Two manometer limbs are attached at A and B. When water is allowed to flow through the tube, pressure difference of 10 cm is noted between the limbs. Calculate the rate of flow of water in the tube.