Question
Kinetic energy of emitted cathode rays is dependent on

Answer

(c)Higher the voltage, higher is the $KE$. Higher the work function, smaller is the $KE$.

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

A piston is slowly pushed into a metal cylinder containing an ideal gas. Which of the following statements is/are incorrect?
An inductance of $1\, mH$ a condenser of $10$ $\mu$ $F$ and a resistance of $50\,  \Omega $ are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be........$\Omega$
Two satellites, $A$ and $B,$ have masses $m$ and $2\,m$ respectively. $A$ is in a circular orbit of radius $R,$ and $B$ is in a circular orbit of radius $2R$ around the earth. The ratio of their kinetic energies, $K.E._A / K.E._B ,$ is
$A, \,B$ and $C$ are voltmeters of resistance $R, \,1 .5R$ and $3R$ respectively as shown in the figure. When some potential difference is applied between $X$ and $Y,$ the voltmeter readings are $V_A, \,V_B$ and $V_C$ respectively. Then
A lensmaker has to design an achromatic combination of effective power $- 0 .5D$.  The two types of glasses to be used  (say $A$. and $B$) has dispersive powers in the ratio ${\omega _A}:{\omega _B} = 3:5$ Then the lens made rom glass $A$ will have focal length.......$cm$
A satellite is orbiting just above the surface of the earth with period $T$. If $d$ is the density of the earth and $G$ is the universal constant of gravitation, the quantity $\frac{3 \pi}{G d}$ represents :
Acetaldehyde cannot give:
In steady state the potential difference across the capacitor is $10\,\, V.$ Each resistance is of $3\,\Omega $. The cell is ideal. The $emf$ of the cell is .............. $\mathrm{V}$
In stationary wave
$A$ ring of radius $R$ rolls without sliding with a constant velocity. The radius of curvature of the path followed by any particle of the ring at the highest point of its path will be