Physics
Find the power of a convex lens if the image formed is at a distance of 16 cm from the lens when the object is placed on the other side of the lens at 20 cm from the optical centre?

11.25 diopters
-11.25 diopters
-3.75 diopters
3.75 diopters

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 heat to get into the food through the hole
To allow the aroma of the food to come out through the holes
To allow the microwaves to get into the food through the holes
To prevent the steam pressure from bursting open the pouch

ANSWER DOWNLOAD EXAMIANS APP