Jamb Mathematics Updated on Nov 22, 2020 by FlashisaacNov 22, 2020 Welcome to Flashlearners Physics Quiz... Read Each Question Carefully And Choose The Best Answer From The Options. You May Click Here for Free Video Tutorials To Boost Your Score Or Simply Click Here To Access Thousands of Physics Questions Offline. Next To Begin...1. A wave that travels through stretched strings is known asseismic waveelectromagnetic wavemicro wavemechanical wave2. Calculate the work done, when a force of 20N stretches a spring by 50mm.2.5 J0.5 J1.5 J2.0 J3. Capacitors are used in the induction coil toprevent distortion of electric fieldscontrol circuitsdissipate energyprevent electric sparks4. Which of the following obeys ohms law?GlassElectrolytesMetalsDiode5. When a brick is taken from the earth's surface to the moon, its massBecomes zeroRemains constantReducesIncreases6. A house has ten 40W and five 100W bulbs. How much will it cost the owner of the house to keep them lit for 10 hours if the cost of a unit is N5?N20N90N50N457. The rise or fall of a liquid in a narrow tube is because of theosmotic pressure of the liquidviscosity of the liquidsurface tension of the liquidfriction between the walls of the tube and the liquid8. The pair if physical quantities that are scalar only areImpulse and timeVolume and areaMoment and momentumLength and displacement9. In photo-emission, the number of photoelectrons ejected per second depends on theIntensity of the beamFrequency of the beamWork function of the metalThreshold frequency of the metal10. Calculate the energy of the third level of an atom if the ground state energy is -24.8eV-1.75eV-9.20eV-8.20eV-2.75eV11. An electric device is rated 2000W, 250V. Calculate the maximum current it can take.6A7A8A9A12. Calculate the force acting on an electron of charge 1.5 x 10-19C placed in an electric field of intensity 105 Vm-11.5 x 10-14N1.5 x 10-11N1.5 x 10-12N1.5 x 10-13N13. What effort will a machine of efficiency 90% applyWhat effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?80N90N100N120N14. If a current of 2.5A flows through an electrolyte for 3 hours and 1.8g of a substance is deposited, what is the mass of the substance that will be deposited if a current of 4A flows through it for 4.8 hours?4.8g2.4g3.2g4.2g15. The resultant of two forces is 50N...If the forces are perpendicular to each other and one of them makes an angle of 30° with the resultant, find its magnitude25.0N100.0N57.7N25.0NTime is Up!
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