Physics When a piece of pure silicon is doped with aluminium, then The doped silicon piece will become n-type The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same The doped silicon piece will become n-type The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same ANSWER DOWNLOAD EXAMIANS APP
Physics To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be made of a good conductor but can be of any shape Should be in the form of a vertical rod Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be made of a good conductor but can be of any shape Should be in the form of a vertical rod ANSWER DOWNLOAD EXAMIANS APP
Physics Sound waves do not show the phenomenon of Refraction Diffraction Interference Polarisation Refraction Diffraction Interference Polarisation ANSWER DOWNLOAD EXAMIANS APP
Physics The filament of electric bulb is made up of : Copper Tungsten Lead Nichrome Copper Tungsten Lead Nichrome ANSWER DOWNLOAD EXAMIANS APP
Physics A cyclist leans inwards when he is negotiating a curve so that No frictional force may be produced between the wheels and the axle He may increase his speed Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. His weight may be reduced No frictional force may be produced between the wheels and the axle He may increase his speed Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. His weight may be reduced ANSWER DOWNLOAD EXAMIANS APP
Physics A rear-view mirror for driving is Convex Inverted Concave Plain Convex Inverted Concave Plain ANSWER DOWNLOAD EXAMIANS APP
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