Physics
In the gamma decay of a nucleus

Both the mass number and the atomic number of the nucleus change
Neither the mass number nor the atomic number of the nucleus changes
The mass number of the nucleus does not change whereas its atomic number changes
The mass number of the nucleus changes whereas its atomic number does not change

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

ANSWER DOWNLOAD EXAMIANS APP