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
A rod of length $l$ is rotating with constant angular velocity $\omega $ and we marked the rod $0, 1, 2, .......... 8$ at equal spacing. Potential difference between consecutive points, if we go from left to right will be
→The grid voltage of any triode valve is changed from –1 volt to – 3 volt and the mutual conductance is $3 \times 10^{-4}$ mho. The change in plate circuit current will be
→A coil of insulating wire is connected to battery. If it is moved towards a galvanometer then its point gets deflected because.
Two lines of force due to a bar magnet
An electric dipole moment $\vec p = (2.0\hat i + 3.0\hat j)$ $\mu C. $ $m$ is placed in a uniform electric field $\vec E = (3.0\hat i + 2.0\hat k)$ $×$$10^5$ $N$ $C^{-1}$.
→The primary origin(s) of magnetism lies in:
Light of wavelength l = 5000 Å falls normally on a narrow slit. A screen placed at a distance of 1 m from the slit and perpendicular to the direction of light. The first minima of the diffraction pattern is situated at 5 mm from the centre of central maximum. The width of the slit is
Huygens' concepts of secondary wavelets
From which source a continuous emission spectrum and a line absorption spectrum are simultaneously obtained
The ratio of intensities of two waves are given by $4 : 1.$ The ratio of the amplitudes of the two waves is
→