Physics The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because There is no air or any other gas in the bell jar The bell jar is too small The glass of the bell jar absorbs the sound waves The ringing is not loud enough There is no air or any other gas in the bell jar The bell jar is too small The glass of the bell jar absorbs the sound waves The ringing is not loud enough ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning heats the surrounding air to 3000 deg Cent 300000 deg Cent 300 deg Cent 30000 deg Cent 3000 deg Cent 300000 deg Cent 300 deg Cent 30000 deg Cent ANSWER DOWNLOAD EXAMIANS APP
Physics In an optical fibre the signal is transmitted In a curved path Due to total internal reflection Due to refraction In a straight line path In a curved path Due to total internal reflection Due to refraction In a straight line path ANSWER DOWNLOAD EXAMIANS APP
Physics A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is : 0.20902777777778 0.12777777777778 0.12638888888889 0.21111111111111 0.20902777777778 0.12777777777778 0.12638888888889 0.21111111111111 ANSWER DOWNLOAD EXAMIANS APP
Physics Lakes freeze in cold countries in winter, leaving the water underneath at 4°F 0°F 4°C 0°C 4°F 0°F 4°C 0°C ANSWER DOWNLOAD EXAMIANS APP
Physics Which colour has the highest energy? Blue Violet White Red Blue Violet White Red ANSWER DOWNLOAD EXAMIANS APP
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