Which of the following is a correct statement
Which of the following is a correct statement
- [IIT 1999]
- A
Beta rays are same as cathode rays
- B
Gamma rays are high energy neutrons
- C
Alpha particles are singly ionized helium atoms
- D
Protons and neutrons have exactly the same mass
Similar Questions
In the nuclear reaction $_{85}{X^{297}} \to Y + 4\alpha ,\;Y$ is
In the nuclear reaction $_{85}{X^{297}} \to Y + 4\alpha ,\;Y$ is
Some laws/processes are given in Column $I$. Match these with the physical phenomena given in Column $II$ and indicate your answer by darkening appropriate bubbles in the $4 \times 4$ matrix given in the $ORS$.
Column $I$
Column $II$
$(A)$ Transition between two atomic energy levels
$(p)$ Characteristic $X$-rays
$(B)$ Electron emission from a material
$(q)$ Photoelectric effect
$(C)$ Mosley's law
$(r)$ Hydrogen spectrum
$(D)$ Change of photon energy into kinetic energy of electrons
$(s)$ $\beta$-decay
Some laws/processes are given in Column $I$. Match these with the physical phenomena given in Column $II$ and indicate your answer by darkening appropriate bubbles in the $4 \times 4$ matrix given in the $ORS$.
| Column $I$ | Column $II$ |
| $(A)$ Transition between two atomic energy levels | $(p)$ Characteristic $X$-rays |
| $(B)$ Electron emission from a material | $(q)$ Photoelectric effect |
| $(C)$ Mosley's law | $(r)$ Hydrogen spectrum |
| $(D)$ Change of photon energy into kinetic energy of electrons | $(s)$ $\beta$-decay |
- [IIT 2007]
In the given reaction $_z{X^A}{ \to _{z + 1}}{Y^A}{ \to _{z - 1}}{K^{A - 4}}{ \to _{z - 1}}{K^{A - 4}}$ Radioactive radiations are emitted in the sequence
In the given reaction $_z{X^A}{ \to _{z + 1}}{Y^A}{ \to _{z - 1}}{K^{A - 4}}{ \to _{z - 1}}{K^{A - 4}}$ Radioactive radiations are emitted in the sequence
- [AIIMS 1982]
A radioactive nucleus with $Z$ protons and $N$ neutrons emits an $\alpha - $ particle, $2\beta$- particles and $2$ gamma rays. The number of protons and neutrons in the nucleus left after the decay respectively, are
A radioactive nucleus with $Z$ protons and $N$ neutrons emits an $\alpha - $ particle, $2\beta$- particles and $2$ gamma rays. The number of protons and neutrons in the nucleus left after the decay respectively, are
A nucleus $X$ undergoes following transformation
$X \stackrel{a}{\longrightarrow} Y$
$Y \underset{2 \beta}{\longrightarrow} Z$
then
A nucleus $X$ undergoes following transformation
$X \stackrel{a}{\longrightarrow} Y$
$Y \underset{2 \beta}{\longrightarrow} Z$
then