Home
Class 12
PHYSICS
During a beta decay...

During a beta decay

A

an atomic electron is ejected

B

an electron which is already present within the nucleus is ejected

C

a neutron in the nucleus decays emitting an electron

D

a part of the binding energy of the nucleus is converted into an electron

Text Solution

Verified by Experts

The correct Answer is:
c
Following nuclear raction takes place
`._0n^(-1) rArr ._1H^(1) + ._(-1)e^(0)+ bar(V)`
`bar(v)` is antienutrino.
Promotional Banner

Similar Questions

Explore conceptually related problems

During beta -decay (beta minus), the emission of antineutrino particle is supported by which of the following statement (s)?

Assertion : During beta -decay a proton converts into a neutron and an electron. No other particle is emitted. Reason: During beta -decay linear momentum of system should remain constant.

During beta -decay of stationary nucleus , an electron is observed with a kinetic energy 1.0 MeV . From this ,what can be concluded about the Q-value of the decay ?

Pauli suggested the emission of nutrino during beta^+ decay to explain

During alpha -decay:

During a negative beta decay,

During a negative beta decay,

During alpha-decay , a nucleus decays by emitting an alpha -particle ( a helium nucleus ._2He^4 ) according to the equation ._Z^AX to ._(Z-2)^(A-4)Y+._2^4He+Q In this process, the energy released Q is shared by the emitted alpha -particle and daughter nucleus in the form of kinetic energy . The energy Q is divided in a definite ratio among the alpha -particle and the daughter nucleus . A nucleus that decays spontaneously by emitting an electron or a positron is said to undergo beta -decay .This process also involves a release of definite energy . Initially, the beta -decay was represented as ._Z^AX to ._(Z+1)^AY + e^(-)"(electron)"+Q According to this reaction, the energy released during each decay must be divided in definite ratio by the emitted e' ( beta -particle) and the daughter nucleus. While , in alpha decay, it has been found that every emitted alpha -particle has the same sharply defined kinetic energy. It is not so in case of beta -decay . The energy of emitted electrons or positrons is found to vary between zero to a certain maximum value. Wolfgang Pauli first suggested the existence of neutrinoes in 1930. He suggested that during beta -decay, a third particle is also emitted. It shares energy with the emitted beta particles and thus accounts for the energy distribution. During beta^+ decay (positron emission) a proton in the nucleus is converted into a neutron, positron and neutrino. The reaction is correctly represented as

During alpha-decay , a nucleus decays by emitting an alpha -particle ( a helium nucleus ._2He^4 ) according to the equation ._Z^AX to ._(Z-2)^(A-4)Y+._2^4He+Q In this process, the energy released Q is shared by the emitted alpha -particle and daughter nucleus in the form of kinetic energy . The energy Q is divided in a definite ratio among the alpha -particle and the daughter nucleus . A nucleus that decays spontaneously by emitting an electron or a positron is said to undergo beta -decay .This process also involves a release of definite energy . Initially, the beta -decay was represented as ._Z^AX to ._(Z+1)^AY + e^(-)"(electron)"+Q According to this reaction, the energy released during each decay must be divided in definite ratio by the emitted e' ( beta -particle) and the daughter nucleus. While , in alpha decay, it has been found that every emitted alpha -particle has the same sharply defined kinetic energy. It is not so in case of beta -decay . The energy of emitted electrons or positrons is found to vary between zero to a certain maximum value. Wolfgang Pauli first suggested the existence of neutrinoes in 1930. He suggested that during beta -decay, a third particle is also emitted. It shares energy with the emitted beta particles and thus accounts for the energy distribution. The beta particles (positron) are emitted with different kinetic energies because

M_(x) and M_(y) denote the atomic masses of the parent and the daughter nuclei respectively in a radioactive decay. The Q - value for a beta- decay is Q_(1) and that for a beta^(+) decay is Q_(2) . If m_(e) denotes the mass of an electrons, then which of the following statements is correct?