Physics A periscope works on the principle of Diffraction Reflection Total internal reflection Refraction Diffraction Reflection Total internal reflection Refraction ANSWER DOWNLOAD EXAMIANS APP
Physics According to the quantum theory of light, the energy of light is carried in discrete units are called Photons Electrons Photoelectrons Protons Photons Electrons Photoelectrons Protons ANSWER DOWNLOAD EXAMIANS APP
Physics Purpose of an optical filter is to Transmit or absorb light of different colours Dispense light into component colours Reflect lights of different colours Refract light of different colours Transmit or absorb light of different colours Dispense light into component colours Reflect lights of different colours Refract light of different colours ANSWER DOWNLOAD EXAMIANS APP
Physics A circular plate, a cube and a sphere, all made up of same material and having the samemass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling? Sphere Circular plate All will cool at the same rate Cube Sphere Circular plate All will cool at the same rate Cube ANSWER DOWNLOAD EXAMIANS APP
Physics One thousand microns is equal to 10-6m 10-3m 10-12m 10-9m 10-6m 10-3m 10-12m 10-9m ANSWER DOWNLOAD EXAMIANS APP
Physics In which one of the following the phenomenon of total internal reflection of light is used ? Working of binoculars Formation of mirage Formation of rainbow Twinkling of stars Working of binoculars Formation of mirage Formation of rainbow Twinkling of stars ANSWER DOWNLOAD EXAMIANS APP
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