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There are 200 questions in a 3 h examination. Among 200 questions, 50 are from Mathematics, 100 are from GK and 50 are from Science. Ram spent twice as much time on each Mathematics question as for each other question. How many minutes did he spend on Mathematics questions ?

A 2.5 cm cube of gelatin placed on a table, is subjected to a shearing fornce a o 0.5gk . The upper surface of the of the cube is displaced by 0.5cm. Calculate the shear modulus of gelatin.

A fort is at the top of a hill of height h above the sea-level.Prove that the greatest horizontal distance from which a gun in the ship can hit the fort is 2sqrt(k(k-h)) where sqrt(2gk) is the muzzle velocity.

Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series. G _ R_ M_ KRC_ GK_ CM

Shows a hydraulic press with the larger piston of diameter 35cm at a height of 1.5 m relative to the smaller piston of diameter 10cm. The mass on the smaller piston is 20gk. What is the force exerted on the load by the lerger piston ? The density of oil in the press is 750 "kgm"^(-3).

A block (A) of mass 45kg is placed on another block (B) of mass 123 gk. Now block (B) is displaced by extenal agent by 50 cm horizontally towards right. During the same time block (A) just reaches to the left end of block (B), Initial and final positions are shown in figures . the work done on block (A) in ground frame is ,

2gk block is kept on 1kg block as shown . The friction between 1kg block and fixed surface is absent and the coefficient of friction between 2kg block is mu=0.1 . A constant horizontal force F=4N is applied on 1kg block. If the work done by the friction on 1 kg block in 2s is -X J , then find X . Take g=10m//s^(2) .