MCQ
The current conduction in a discharged tube is due to
- AElectrons only
- B+ve ions and electrons
- C- ve ions and electrons
- ✓+ ve ions, $-v e$ ions and electrons
✓
Answer
Correct option: D.
+ ve ions, $-v e$ ions and electrons
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
Two $P N$-junctions can be connected in series by three different methods as shown in the figure. If the potential difference in the junctions is the same, then the correct connections will be
→Due to capillary action, a liquid will rise in a tube, if the angle of contact is
If energy of $K$-shell electron is $-40000 \mathrm{eV}$ and if $60000 \mathrm{~V}$ potential is applied at coolidge tube then which of the following $X$ ray will get form
→If a thermometer reads freezing point of water as $20^{\circ} \mathrm{C}$ and boiling point as $150^{\circ} \mathrm{C}$, how much thermometer read when the actual temperature is $60^{\circ} \mathrm{C}$
→Two satellites of masses $m_1$ and $m_2\left(m_1>m_2\right)$ are revolving round the earth in circular orbits of radius $r_1$ and $r_2\left(r_1>r_2\right)$ respectively. Which of the following statements is true regarding their speeds $v_1$ and $v_2$ ?
→If $g$ is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass $m$ raised from the surface of earth to a height equal to the radius of the earth $R$, is
→The dimensions of $K$ in the equation $W=\frac{1}{2} K x^2$ is
→In terms of Rydberg's constant $R$, the wave number of the first Balmer line is
→If two tuning forks $A$ and $B$ are sounded together, they produce $4$ beats per second. $A$ is then slightly loaded with wax, they produce $2$ beats when sounded again. The frequency of $A$ is $256.$ The frequency of $B$ will be
→Absorption of X-ray is maximum in which of the following different sheets