alizyLv10in Physics·20 Jun 2022The working principle of transformer is -1) Self - induction2) Mutual induction3) Electromagnetic induction4) Lorentz law
alizyLv10in Physics·20 Jun 2022The term refraction of light means -1) Bending of light rays when they enter from one medium to another medium2) Splitting of white light into seven colours when it passes through the prism3) Bending of light round the corners of obstacles and apertures4) Coming back of light from a bright smooth surface
alizyLv10in Physics·20 Jun 2022In the visible spectrum, the colour having the shortest wavelength is -1) Green2) Red3) Violet4) Blue
alizyLv10in Physics·20 Jun 2022A man weighing 65 kg jumps from a 100 ft high building with a load of 35 kg What will be the load experienced by him?1) 20 kg2) 100 kg3) 200 kg4) Zero
alizyLv10in Physics·20 Jun 2022 The alloy of steel that is used for making automobile parts such as axle, ball bearing, etc. is -1) Nickel steel2) Chromium steel3) Tungsten steel4) Stainless steel
alizyLv10in Physics·20 Jun 2022With what do you divide thrust in a liquid to obtain the value of pressure?1) Area2) Density3) Mass4) Volume
alizyLv10in Physics·20 Jun 2022An elastic wave generated by an impulse such as an earthquake or an explosion is called -1) sound wave2) epicentre3) tectonic shift4) seismic wave
alizyLv10in Physics·20 Jun 2022A device that converts chemical energy into electrical energy is called -1) motor2) generator3) battery4) moving-coil meter
alizyLv10in Physics·20 Jun 2022Very High Frequency (VHF) has -1) shorter wavelengths2) shortest wavelengths3) longer wavelengths4) longest wavelengths
alizyLv10in Physics·20 Jun 2022The most commonly used semi-conductive material is -1) Germanium2) Silicon3) Carbon4) Sulphur
alizyLv10in Physics·20 Jun 2022What should be the characteristics of an electric-fuse wire?1) High melting point, high specific resistance2) Low melting point, low specific resistance3) High melting point, low specific resistance4) Low melting point, high specific resistance
alizyLv10in Physics·20 Jun 2022Light energy is converted into chemical energy by -1) Electrolysis2) Respiration3) Transpiration4) Photosynthesis
alizyLv10in Physics·20 Jun 2022Combustion of the candle is a/an -1) Exothermic reaction2) Photochemical reaction3) Physical change4) Endothermic reaction
alizyLv10in Physics·20 Jun 2022Which is the smallest possible unit of a chemical compound?1) Atom2) Molecule3) Proton4) Photon