A 0.600 m long solenoid has a current that changes with time according to I space equals space 0.050 space t squared space plus space 0.075, where I is in Amperes and t is in seconds. The solenoid’s radius is 12.0 cm and it has 1500 turns. A circular loop of radius 8.00 cm is placed inside the solenoid such that its center is on the axis of the solenoid and its plane makes an angle of 30 degrees with the axis. What is the induced current in the loop at t = 3.00 s if the loop has a resistance of 6.00 Ω?

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.