MCQ
The best suitable metal for photoelectric effect is:
- AIron
- BSteel
- CAluminium
- ✓Cesium
✓
Answer
Correct option: D.
Cesium
Photoelectric effect occurs easily if the metal has low ionization potential cesium, the alkali metal has low ionization potential, hence it is best suitable for photoelectric effect.
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
The refractive index of flint glass for blue F line is 1.6333 and red C line is 1.6161. If the refractive index for yellow D line is 1.622, the dispersive power of the glass is
A and B are two concentric circular conductors of centre O and carrying currents $i_1$ and $i_2$ as shown in the adjacent figure. If ratio of their radii is 1 : 2 and ratio of the flux densities at O due to A and B is 1 : 3, then the value of $i_1/i_2$ is
→The fundamental particles of the nucleus of an atom are :
The oscillating frequency of acyclotron is $10\, MHz$. If the radius of its dee is $0.5\, m$, the kinetic energy of a proton, which is accelerated by the cyclotron is......$MeV$
→In a diode AM-detector, the output circuit consist of R = 1kW and C = 10 pF. A carrier signal of 100 kHz is to be detected. Is it good
Four charges $ + Q,\, - Q,\, + Q,\, - Q$ are placed at the corners of a square taken in order. At the centre of the square
→A long solenoid is formed by winding $70$ turns $cm ^{-1}$. If $2.0\,A$ current flows, then the magnetic field produced inside the solenoid is $.......\times 10^{-4}\,T$ $\left(\mu_0=4 \pi \times 10^{-7}\,TmA ^{-1}\right)$
→The cathode of a photoelectric cell is changed such that the work function changes from $W_1$ to $W_2$ ($W_2 > W_1$). If the current before and after change are $I_1$ and $I_2$, all other conditions remaining unchanged, then (assuming $h\nu > W_2$)
→A convex mirror of focal length $'f'$ is placed at the origin with its reflecting surface towards the negative $x-$ axis. Choose the correct graphs between $'v'$ and $'u'$ for $u < 0$
→Which of the following helps us in the determination of the temperature of sun