Physics Lightning is produced when Strong opposite charges in different clouds break down the resistance offered by the intervening air Similar charges of electricity rush towards each other and then get repelled Water vapour produces electricity in the clouds Clouds strike against impurities in air and the friction burns up these impurities Strong opposite charges in different clouds break down the resistance offered by the intervening air Similar charges of electricity rush towards each other and then get repelled Water vapour produces electricity in the clouds Clouds strike against impurities in air and the friction burns up these impurities ANSWER DOWNLOAD EXAMIANS APP
Physics When a barometer is rising air pressure is Zero Decreasing Constant Increasing Zero Decreasing Constant Increasing ANSWER DOWNLOAD EXAMIANS APP
Physics At what temperature (in degree Celsius), the numerical values on Celsius and Fahrenheit scales become equal? 273 40 –273 –40 273 40 –273 –40 ANSWER DOWNLOAD EXAMIANS APP
Physics Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in 42 seconds 4.2 seconds 42 years 4.2 years 42 seconds 4.2 seconds 42 years 4.2 years ANSWER DOWNLOAD EXAMIANS APP
Physics A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will Increase Remain unaffected Have its shape changed Decrease Increase Remain unaffected Have its shape changed Decrease ANSWER DOWNLOAD EXAMIANS APP
Physics What is the unit of the physical quantity "Jerk"? Meter per second Meter per second square Meter second Meter per second cube Meter per second Meter per second square Meter second Meter per second cube ANSWER DOWNLOAD EXAMIANS APP
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