If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6 .find the ratio of their 13th terms?
1 4279If the letters of the word ?rachit? are arranged in all possible ways and these words are written out as in a dictionary, what is the rank of the word ?rachit?. (a) 485 (b) 480 (c) 478 (d) 481
8 36886Ravi?s salary was reduced by 25%.Percentage increase to be effected to bring the salary to the original level is (a) 20% (b) 25% (c) 33 1/3% (d) 30%
3 9651A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job?
5 40662How long will a train 100m long traveling at 72kmph take to overtake another train 200m long traveling at 54kmph?
2 11398Which of the following parameters is the same for molecules of all gases at a given temperature? (a) Mass (b) Momentum (c) Speed (d) Kinetic energy.
1 6303A solid is completely immersed in liquid. The force exerted by the liquid on the solid will (a) Increase if it is pushed deeper inside the liquid (b) Change if its orientation is changed (c) Decrease if it is taken partially out of the liquid (d) None of the above.
3 6197Select the correct statements (a) A simple harmonic motion is necessarily periodic (b) An oscillatory motion is necessarily periodic (c) A periodic motion is necessarily oscillatory (d) All of the above.
2 4984An electron is injected into a region of uniform magnetic flux density with the components of velocity parallel to and normal to the flux. What is the path of the electron?
1908A constant voltage is applied between the 2 ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if (a) both the length and radius of the wire are halved. (b) both the length and radius of the wire are doubled (c) the radius of the wire is doubled (d) the length of the wire is doubled.
1 6524If Young?s double slit experiment is performed in water (a) the fringe width will decrease (b) the fringe width will increase (c) the fringe width remains unchanged (d) there will be no fringe.
3 9918The shape of a spot of light produced when bright sunshine passes perpendicular through a hole of very small size is (a) Square, because the hole is a square (b) Round, because it is an image of the sun (c) Round with a small penumbra around it (d) Square with a small penumbra.
1 3528Some forms are books. All books are made of paper (a) Some forms are made of paper (b) Some forms are not made of paper (c) No forms are made of paper (d) None of the above.
1 11480Post New Bio Informatics Questions
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