Jamb Mathematics November 22, 2020 by Flash Isaac 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. What effort will a machine of efficiency 90% apply What 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? 80N 90N 100N 120N 2. Steam from boiling water cause more damage on the skin does boiling water because Steam brings heat more easily by convection. Water has a high specific heat Steam has latent heat of fusion The steam is at a higher temperature than the water 3. Calculate the force acting on an electron of charge 1.5 x 10-19C placed in an electric field of intensity 105 Vm-1 1.5 x 10-14N 1.5 x 10-11N 1.5 x 10-12N 1.5 x 10-13N 4. Capacitors are used in the induction coil to prevent distortion of electric fields control circuits dissipate energy prevent electric sparks 5. Two liquids X and Y having the same mass are supplied with the same quantity of heat Two liquids X and Y having the same massare supplied with the same quantity ofheat. If the temperature rise in X is twicethat of Y, the ratio of specific heatcapacity of X to that of Y is 1 : 4 2 : 1 1 : 2 4 : 1 6. A gas at a pressure of 105Nm-2 expands from 0.6m3 to 1.2m3 at constant temperature, the work done is 6.0 x 104 J 7.0 x 107 J 6.0 x 106 J 6.0 x 105 J 7. When a brick is taken from the earth's surface to the moon, its mass Becomes zero Remains constant Reduces Increases 8. At what depth below the sea-level would one experience a change of pressure equal to one atmosphere? 100.0 m 0.1 m 1.0 m 10.0 m 9. If the linear magnification of the objective and eyepiece are 4 and 7 respectively, calculate the angular magnification of the microscope 28 2 3 11 10. A wave that travels through stretched strings is known as seismic wave electromagnetic wave micro wave mechanical wave 11. Total internal reflection will not occur when light travels from glass into water water to air water into glass glass to air 12. The pair if physical quantities that are scalar only are Impulse and time Volume and area Moment and momentum Length and displacement 13. The coefficient of friction between two perfectly smooth surface is Zero Infinity One Half 14. If a sonometer has a fundamental frequency of 450Hz, what is the frequency of the fifth overtone? 75Hz 2700Hz 456Hz 444Hz 15. Calculate the energy of the third level of an atom if the ground state energy is -24.8eV -1.75eV -9.20eV -8.20eV -2.75eV Time is Up! Time's up
Leave a Reply