MCQ
$\beta$- rays emitted by a radioactive material are
  • A
    Electromagnetic radiation
  • B
    The electrons orbiting around the nucleus
  • Charged particles emitted by nucleus
  • D
    Neutral particles

Answer

Correct option: C.
Charged particles emitted by nucleus
c
(c) $\beta$- rays emitted from nucleus and they carry negative charge.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The magnetic field intensity at the point $O$ of a loop with current $i$, whose shape is illustrated below is
The electric potential at a point $(x, y, z)$ is given by $V=-x^2y-xz^3 +4 $. The electric field at that point is  
Due to the earth's magnetic field, charged cosmic ray particles
In a uniform electric field, a cube of side $1\ cm$ is placed. The total energy stored in the cube is $8.85\ μJ$ . The electric field is parallel to four of the faces of the cube. The electric flux through any one of the remaining two faces is
A particle is moving in a uniform magnetic field, then
A convex lens
A breaker contains water up to a height $h_{1}$ and kerosene of height $h _{2}$ above water so that the total height of (water $+$ kerosene) is $\left( h _{1}+ h _{2}\right.$ ) Refractive index of water is $\mu_{1}$ and that of kerosene is $\mu_{2}$. The apparent shift in the position of the bottom of the breaker when viewed from above is
A bulb of 100 watt is hanging at a height of one meter above the centre of a circular table of diameter 4 m . If the intensity at a point on its rim is $I_0$, then the intensity at the centre of the table will be
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism $A$) and emerges normally from the opposite surface. If the refractive index of the material of the prism Is $\mu,$ then the angle of incidence is nearly equal to
Four identical pendulums are made by attaching a small ball of mass $100 \,g$ on a $20 \,cm$ long thread and suspended from the same point. Now, each ball is given charge $Q$, so that balls move away from each other with each thread making an angle of $45^{\circ}$ from the vertical. The value of $Q$ is close to ..............$\mu C$ $\left(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9\right.$ in $SI$ units $)$