gk quiz #shorts #gk

The specific heat of a substance varies with temperature according to the function c = 0.20 + 0.14 T + 0.023T^(@) , with T in ""^(@)C and c in Cal//g.K , Find the energy required to raise the temperature of 1.0g of this substance from 5.0 ""^(@)C to 15""^(@)C .

The specific heat of a substance varies with temperature according to c =0.2 +0.16 T + 0.024 T^(2) with T in "^(@)c and c is cal//gk . Find the energy (in cal) required to raise the temp of 2g substance from 0^(@)to 5^(@)C

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.

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 ?

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).

In the following figure, seg DH bot seg EF and seg GK bot EF. If DH = 6 cm, GK = 10 cm and A(DeltaDEF) = 150 cm^2 , then find: (i) EF (ii) A (DeltaGEF) (iii) A(squareDFGE)

Find the missing (?) in the series AB, CE, FI , ?, OT A. JM B. GK C. HO D. JN