Physics Acceptable noise level for human ear = 85 db < 85 db None of these > 85 db = 85 db < 85 db None of these > 85 db ANSWER DOWNLOAD EXAMIANS APP
Physics Radio telescopes are better than optical telescopes because 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 they can work even in cloudy conditions they can detect faint galaxies which no optical telescope can ANSWER DOWNLOAD EXAMIANS APP
Physics The reverse effect of X–ray emission is Photoelectric Compton effect Raman effect Zeeman effect Photoelectric Compton effect Raman effect Zeeman effect ANSWER DOWNLOAD EXAMIANS APP
Physics Bats can sense obstacles because they produce Ultrasonic sound waves Supersonic sound waves Micro sound waves Infrasonic sound waves Ultrasonic sound waves Supersonic sound waves Micro sound waves Infrasonic sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics Danger signals are generally red as red light Is least bright Gives comfort to eye Has lowest velocity Undergoes least deviation Is least bright Gives comfort to eye Has lowest velocity Undergoes least deviation ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is not a simple machine? The pulley A pair of scissors A lever A ramp The pulley A pair of scissors A lever A ramp ANSWER DOWNLOAD EXAMIANS APP
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