Physics The frequency of direct current is ________ 60 HZ 100 HZ 50 HZ Zero 60 HZ 100 HZ 50 HZ Zero ANSWER DOWNLOAD EXAMIANS APP
Physics It is dangerous to observe Solar eclipse with naked eyes because Ultraviolet radiations from Sun burn our retina All radiations from sun initiate chemical reactions in eyes Cosmic rays reach eyes more during the eclipse Infrared radiations from sun burn our retina Ultraviolet radiations from Sun burn our retina All radiations from sun initiate chemical reactions in eyes Cosmic rays reach eyes more during the eclipse Infrared radiations from sun burn our retina ANSWER DOWNLOAD EXAMIANS APP
Physics A bird sitting on a high tension electric wire does not get electrocuted because Its feet are good insulators The body is earthed It does not form a closed path for the flow of current It has high resistance Its feet are good insulators The body is earthed It does not form a closed path for the flow of current It has high resistance ANSWER DOWNLOAD EXAMIANS APP
Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 40 2000 4000 80 40 2000 4000 80 ANSWER DOWNLOAD EXAMIANS APP
Physics During thunderstorm you are travelling in a car. To protect yourself from the lightning you will have to Get out of the car and lie flat in the ground Abandon the car and take shelter under a nearby tree Remain in the car Touch the nearest electric pole Get out of the car and lie flat in the ground Abandon the car and take shelter under a nearby tree Remain in the car Touch the nearest electric pole ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Increases Remains constant Decreases Fluctuates Increases Remains constant Decreases Fluctuates ANSWER DOWNLOAD EXAMIANS APP
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