Question 1Which of these is a derived unit? A.KilogrammeB.MetreC.KelvinD.NewtonE.Gramm Objective Show full explanation
Question 2Which of theses is the correct precision if the length of a piece of wire is measured with a metre rule? A.32mmB.35.0mmC.35.00mmD.35.01mmE.35.00mm Objective Show full explanation
Question 3A ball is thrown vertically into the air with an initial velocity u. What is the greatest height reached? A.u/2gB.3u2/2gC.u2/gD.u2/2gE.2u2/g Objective Show full explanation
Question 4Evaporation and boiling have one of these features in common A.they take place at any temperatureB.they are surface phenomenaC.they involve change of stateD.they take place at a definite pressureE.A & DObjective Show full explanation
Question 5Dry Leclanche cell stores A.Electric powerB.kinetic currentC.electric currentsD.chemical energyE.none of the above. Objective Show full explanation
Question 6Which of these instruments has a pure tone? A.GuitarB.Vibrating stringC.Tuning forkD.SirenE.all of the above Objective Show full explanation
Question 7Which of these media allow transmission of sound wave through them? A.AirB.LiquidC.SolidD.Air & LiquidE.all of the above Objective Show full explanation
Question 8A column of air 10.0cm long is trapped in a tube at 27°C. What is the length of the column at 100'C? A.12.4cmB.13.7cmC.18.5cmD.37.0cmE.32em Objective Show full explanation
Question 9Shadows and eclipse result from the A.refraction of lightB.rectilinear propagation of lightC.detraction of lightD.reflection of lightE.combination of A & B Objective Show full explanation
Question 10When an object is placed in front of two mirrors inclined at 90', how many images will be formed? A.fiveB.fourC.threeD.twoE.oneObjective Show full explanation