Physics The frequency of ultrasound wave is typically Above 20 kHz Below 20 kHz Above 20,000 kHz Below 02 kHz Above 20 kHz Below 20 kHz Above 20,000 kHz Below 02 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics Radio telescopes are better than optical telescopes because they can work even in cloudy conditions they can detect faint galaxies which no optical telescope can they can work during the day and night All of these they can work even in cloudy conditions they can detect faint galaxies which no optical telescope can they can work during the day and night All of these ANSWER DOWNLOAD EXAMIANS APP
Physics Man perceives sound vibrations in the frequency ranges of 20 – 20000 Hz 0 – 5 Hz 11 – 20 Hz 6 – 10 Hz 20 – 20000 Hz 0 – 5 Hz 11 – 20 Hz 6 – 10 Hz ANSWER DOWNLOAD EXAMIANS APP
Physics What will happen if an object is dropped from a height and there is no air resistance? Its acceleration will increase It will fall with a constant speed and acceleration Its speed will increase Both speed and acceleration will increase Its acceleration will increase It will fall with a constant speed and acceleration Its speed will increase Both speed and acceleration will increase ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these travels in glass with minimum velocity ? Red light Yellow light Violet light Green light Red light Yellow light Violet light Green light ANSWER DOWNLOAD EXAMIANS APP
Physics Sun appears red in colour at sunrise and sunset due to The fact that sun emits only red colour at that time That all other colours scatter away except red That sun comes out of the mountains Red light having longer wave length scatters away The fact that sun emits only red colour at that time That all other colours scatter away except red That sun comes out of the mountains Red light having longer wave length scatters away ANSWER DOWNLOAD EXAMIANS APP
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