Physics When a piece of pure silicon is doped with aluminium, then The conductivity of the doped silicon piece will remain the same The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The doped silicon piece will become n-type The conductivity of the doped silicon piece will remain the same The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The doped silicon piece will become n-type ANSWER DOWNLOAD EXAMIANS APP
Physics A periscope works by the principle of Reflection Total internal reflection Refraction Diffraction Reflection Total internal reflection Refraction Diffraction ANSWER DOWNLOAD EXAMIANS APP
Physics The sparkling of a diamond is due to Refraction of light Interference of light Polarisation of light Total internal reflection of light Refraction of light Interference of light Polarisation of light Total internal reflection of light 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? Cube Circular plate All will cool at the same rate Sphere Cube Circular plate All will cool at the same rate Sphere ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following liquids is most viscous? Milk Oil Water Petrol Milk Oil Water Petrol ANSWER DOWNLOAD EXAMIANS APP
Physics A device used for converting a.c. into d.c. is called Rectifier Dynamo Transformer Induction coil Rectifier Dynamo Transformer Induction coil ANSWER DOWNLOAD EXAMIANS APP
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