Physics Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? 1.8 km, 0.15 km 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km 1.8 km, 0.15 km 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km ANSWER DOWNLOAD EXAMIANS APP
Physics Materials for rain-proof coats and tents owe their water-proof properties to specific gravity elasticity surface tension viscosity specific gravity elasticity surface tension viscosity ANSWER DOWNLOAD EXAMIANS APP
Physics Which sources produce alternating current (AC)? Batteries All of these Hydro-electric generators Solar power plants Batteries All of these Hydro-electric generators Solar power plants ANSWER DOWNLOAD EXAMIANS APP
Physics The device which converts AC to DC is None of these Amplifier Oscillator Rectifier None of these Amplifier Oscillator Rectifier ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an example for cantilever beam? See-saw Common balance Bridge Diving board See-saw Common balance Bridge Diving board ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to expansion in summer can be avoided Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided ANSWER DOWNLOAD EXAMIANS APP
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