What is the energy of a photon with frequency of 5.0 x 10^4 Hz?

Explanation:

the energy of a photon with frequency of 5.0 x 10^4 Hz

Explanation:

h is Planck's Constant,

f is the frequency,

c is the speed of light, and λ is the wavelength of the radiation.

Calculate the energy of a photon of radiation whose frequency is 5.00×1014Hz .

The energy is 3.31×10−19J

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.

the answer would be a