**i) A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross section of piston carrying the load is 2.25 ****Ã— ****10**^{-2} m^{2}. What is the maximum pressure the smaller piston would have to bear?

^{-2}m

^{2}. What is the maximum pressure the smaller piston would have to bear?

**(A) 0.8711 × 10 ^{6} N/m^{2}**

**(B) 0.5862 ×10 ^{7} N/m^{2}**

**(C) 0.4869 ×10 ^{5} N/m^{2}**

**(D) 0.3271 ×10 ^{4} N/m^{2}**

**ii) Two capillary tubes of radii 0.3 cm and 0.6 cm are dipped in the same liquid. The ratio of heights through which the liquid will rise in the tubes is**

**(A) 1:2 (B) 2:1 (C) 1:4 (D) 4:1**

**iii) The energy stored in a soap bubble of diameter 6 cm and T = 0.04 N/m is nearly**

**(A) 0.9 × 10 ^{-3} J **

**(B) 0.4 × 10 ^{-3} J**

**(C) 0.7 × 10 ^{-3} J **

**(D) 0.5×10 ^{-3} J**

**iv) Two hail stones with radii in the ratio of 1:4 fall from a great height through the atmosphere. Then the ratio of their terminal velocities is**

**(A) 1:2 (B) 1:12 (C) 1:16 (D) 1:8**

**v) In Bernoulli's theorem, which of the following is conserved?**

**(A) linear momentum**

**(B) angular momentum**

**(C) mass**

**(D) energy**