Physics
Who enunciated the laws of planetary motion?

Isaac Newton
Johannes Kepler
Galileo
Nicolaus Copernicus

ANSWER DOWNLOAD EXAMIANS APP

Physics
Lightning is produced when

Similar charges of electricity rush towards each other and then get repelled
Water vapour produces electricity in the clouds
Strong opposite charges in different clouds break down the resistance offered by the intervening air
Clouds strike against impurities in air and the friction burns up these impurities

ANSWER DOWNLOAD EXAMIANS APP