Physics A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? Remain constant Dacrease Will increase first and then dcrease Increase Remain constant Dacrease Will increase first and then dcrease Increase ANSWER DOWNLOAD EXAMIANS APP
Physics A periscope works by the principle of Total internal reflection Diffraction Reflection Refraction Total internal reflection Diffraction Reflection Refraction ANSWER DOWNLOAD EXAMIANS APP
Physics Gamma rays have greatest similarity with B-rays U.V.-rays X-rays A-rays B-rays U.V.-rays X-rays A-rays ANSWER DOWNLOAD EXAMIANS APP
Physics Amount of water vapour in the atmosphere is measured in terms of All of these Humidity Droplets Smog All of these Humidity Droplets Smog ANSWER DOWNLOAD EXAMIANS APP
Physics A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be 5 R/4 5 R 4 R/5 R/5 5 R/4 5 R 4 R/5 R/5 ANSWER DOWNLOAD EXAMIANS APP
Physics A permanent magnet can affect None of these Both A & B Magnets Electromagnets None of these Both A & B Magnets Electromagnets ANSWER DOWNLOAD EXAMIANS APP
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