Question
State the approximate potential difference applied between the anode and filament cathode ray tube.

Answer

  1. 1000V
Explanation:
The electrons are accelerated by a second anode at high potential, more than 500V

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

Consider four circuits shown in the figure below. In which circuit power dissipated is greatest  $($Neglect the internal resistance of the power supply$)$
According to Bohr, only those states are stable, in which angular momentum of electron will be :
The potential energy of a particle of mass $m$ is given by $U(x)= \left\{\begin{array}{l}\mathrm{E}_0 ; 0 \leq \mathrm{x} \leq 1 \\ 0 ; \quad \mathrm{x}>1\end{array}\right\} \ldots 1 \ldots 2 \ldots$ de$-$Broglie wavelengths of the particle, when $0 \leq x \leq 1$ and $x>1$ respectively. If the total energy of particle is $2 E_0$, the ratio ${\frac{\lambda_1}{\lambda_2}}$ vill be
Consider two observers moving with respect to each other at a speed v along a straight line. They observe a bock of mass m moving a distancel on a rough surface. The following quantities will be same as observed by the two observers.
  1. Kinetic energy of the block at time t.
  2. Work done by friction.
  3. Total work done on the block.
  4. Acceleration of the block.
A combination of two thin lenses with focal lengths $\mathrm{f}_1$ and $\mathrm{f}_2$ respectively forms an image of distant object at distance $60 \ cm$ when lenses are in contact. The position of this image shifts by $30 \ cm$ towards the combination when two lenses are separated by $10 \ cm.$ The corresponding values of $\mathrm{f}_1$ and $\mathrm{f}_2$ are
In a circuit with a coil of resistance 2 ohms, the magnetic flux changes from 2.0 Wb to 10.0 Wb in 0.2 second. The charge that flows in the coil during this time is(a) 5.0 coulomb(b) 4.0 coulomb(c) 1.0 coulomb(d) 0.8 coulomb
       
A bar magnet of magnetic moment $3.0 A- m ^2$ is kept in an uniform magnetic induction of $2 \times 10^{-5} T$. If each pole of the magnet experiences a force of $6 \times 10^{-4} N$, then length of the magnet is :
Each plate of a parallel plate capacitor has a charge q on it. The capacitor is now connected to a batter. Now:
  1. The facing surfaces of the capacitor have equal and opposite charges.
  2. The two plates of the capacitor have equal and opposite charges.
  3. The battery supplies equal and opposite charges to the two plates.
  4. The outer surfaces of the plates have equal charges.
For the same speed, de Broglie wavelength.
The graph between intensity of light falling on a metallic plate $(I)$ with the current $(i)$ generated is