Question 1Which of the following is a derived unit? A.MeterB.CoulombC.KilogramD.SecondObjective Show full explanation
Question 2The inner diameter of a small test tube can be measured accurately using a A.Micrometer screw gaugeB.Pair of dividersC.Meter ruleD.Pair of vernier calipersObjective Show full explanation
Question 3Apiece of rubber 10cm long stretches 6mm when a load of 100N is hung from it What is the strain? A.6X102B.60C.2X102D.6.0x10-2Objective Show full explanation
Question 4One of the properties of gamma rays is that they are A.negatively chargedB.massiveC.neutralD.positively charge Objective Show full explanation
Question 5When light is incident on an object, which is magenta in color, which of the following colors would be absorbed? A.Red and blueB.green onlyC.red and greenD.red onlyObjective Show full explanation
Question 6Calculate the electric field strength at a point 0.05m from a point charge of magnitude 3.14 x 10-6C in a medium of permittivity 2.5 x 10-11 FmN-1A.2.0 x 105 NC-1B.4.0 x 106 NC-1C.1.1 x 107 NC-1D.2.2 X 108NC-1Objective Show full explanation
Question 7The silver wall of a vacuum flask prevents heat loss due toA.diffractionB.conductionC.convectionD.radiationObjective Show full explanation
Question 8A constant force of 6N is applied to a 5kg mass initially at rest. The mass moves through a horizontal distance of 5.0m. What is the work done by the force?A.3JB.6JC.12JD.30JObjective Show full explanation
Question 9A cell of internal resistance 0.01Ω can be measured accurately using theA.OhmmeterB.meter bridgeC.potentiometerD.electroscopeObjective Show full explanation
Question 10The fission of a certain radioactive nucleus is accompanied by the release of 6.5 x 1011J of energy. Calculate its mass defect.[c = 3.0 x 108ms-1]A.4.6 x 10-20kgB.7.1 x 10-16kgC.7.2 x 10-8kgD.4.6 x 10-4kgObjective Show full explanation
Question 11The purpose of dielectric material in a parallel plate capacitor is to A.increase the capacitance B.decrease its capacitance C.insulate the plates from each other D.increase the magnetic field between plates Objective Show full explanation