MCQ
Which decay increases the atomic number?
- A$\beta^-$decay
- ✓$\beta^+$ decay
- CElectron capture
- DGamma decay
✓
Answer
Correct option: B.
$\beta^+$ decay
$\beta^-$ decay: $_\text{Z}^\text{A}\text{X}→_{\text{Z}+1}^{\text{A}}\text{Y} + _{−1}^0\text{e}$
Thus, the atomic number is increased in $\beta^-$ decay.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The electronic transition from $n = 2$ to $n = 1$ will produce shortest wavelength in:
→What is the ratio of the speed of infrared and ultraviolet rays in a vacuum?
For a given circuit output voltage across load Resistance will be
Primary side of a transformer is connected to $230 \mathrm{~V}, 50 \mathrm{~Hz}$ supply. Turns ratio of primary to secondary winding is $10: 1$. Load resistance connected to secondary side is $46\ \Omega$. The power consumed in it is :
→Photon and electron are given same energy ($10^{-20} \mathrm{~J}$). Wavelength associated with photon and electron are $\lambda_{\mathrm{ph}}$ and $\lambda_{\mathrm{el}}$ then correct statement will be
→Photon of $5.5 eV$ energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy $4.0 eV$. The stopping voltage required for these electrons are .......... $V$
→The ratio of secondary to the primary turns in a transformer is $3 : 2$. If the power output be $P$, then the input power neglecting all loses must be equal to
→In the circuit given in the figure, an a.c. source of 200 V is connected through a diode D to a capacitor. The potential difference across the capacitor will be
A radioactive sample disintegrates via two independent decay processes having half lives $T _{1 / 2}^{(1)}$ and $T _{1 / 2}^{(2)}$ respectively. The effective half- life $T _{1 / 2}$ of the nuclei is
→In an ac circuit, the instantaneous current is zero, when the instantaneous voltage is maximum. In this case, the source may be connected to:
→$A$. pure inductor.
$B$. pure capacitor.
$C$. pure resistor.
$D$. combination of an inductor and capacitor.
Choose the correct answer from the options given below: