Physics Period of oscillation of 3 cm microwaves in seconds is 0.01 0.001 1 × 1010 1 × 10–10 0.01 0.001 1 × 1010 1 × 10–10 ANSWER DOWNLOAD EXAMIANS APP
Physics The working of the quartz crystal in the watch is based on the Edison Effect Photoelectric Effect Johnson Effect Piezo - electric Effect Edison Effect Photoelectric Effect Johnson Effect Piezo - electric Effect ANSWER DOWNLOAD EXAMIANS APP
Physics In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch? To allow the microwaves to get into the food through the holes To allow the heat to get into the food through the hole To allow the aroma of the food to come out through the holes To prevent the steam pressure from bursting open the pouch To allow the microwaves to get into the food through the holes To allow the heat to get into the food through the hole To allow the aroma of the food to come out through the holes To prevent the steam pressure from bursting open the pouch ANSWER DOWNLOAD EXAMIANS APP
Physics Why two thin shirts can keep us warmer than a single thick shirt in winter ? Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media No radiation of heat takes place Air layer between two shirts works as good conductor Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media No radiation of heat takes place Air layer between two shirts works as good conductor ANSWER DOWNLOAD EXAMIANS APP
Physics A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds. 4 36 72 8 4 36 72 8 ANSWER DOWNLOAD EXAMIANS APP
Physics Why the needle of iron swims on water surface when it is kept gently ? The density of needle is less than that of water It will remain under the water, when it will displace more water than its weight Due to its shape Due to surface tension The density of needle is less than that of water It will remain under the water, when it will displace more water than its weight Due to its shape Due to surface tension ANSWER DOWNLOAD EXAMIANS APP
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