Physics Ultrasound devices operate with minimum frequency from 45 kHz 20kHz 60 kHz 35 kHz 45 kHz 20kHz 60 kHz 35 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics A photostat machine works on Electromagnetic image making Electrostatic image making Thermal image making Magnetic image making Electromagnetic image making Electrostatic image making Thermal image making Magnetic image making 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 R/5 4 R/5 5 R 5 R/4 R/5 4 R/5 5 R 5 R/4 ANSWER DOWNLOAD EXAMIANS APP
Physics In severe winter, in cold countries water pipes burst because Water expands on freezing Contraction of water pipes High atmospheric pressure Combined effect of all the above three Water expands on freezing Contraction of water pipes High atmospheric pressure Combined effect of all the above three ANSWER DOWNLOAD EXAMIANS APP
Physics The cover of a solar cooker is made of glass because It reflects sun's rays It absorbs sun's rays It retains the heat inside by the green house effect It rediates heat better than metals It reflects sun's rays It absorbs sun's rays It retains the heat inside by the green house effect It rediates heat better than metals ANSWER DOWNLOAD EXAMIANS APP
Physics Natural radioactivity was discovered by Enrico Fermi Marie Curie Ernest Rutherfor Henri Becquerel Enrico Fermi Marie Curie Ernest Rutherfor Henri Becquerel ANSWER DOWNLOAD EXAMIANS APP
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