Physics
In the gamma decay of a nucleus

Both the mass number and the atomic number of the nucleus change
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
Neither the mass number nor the atomic number of the nucleus changes

ANSWER DOWNLOAD EXAMIANS APP

Physics
Scalar Quantities are

Physical quantities which have magnitude only and no direction
Physical quantities which have magnitude only and direction
Physical quantities which have no magnitude and no direction
Physical quantities which have no magnitude only and only direction

ANSWER DOWNLOAD EXAMIANS APP