Question
The Einstein’s photo$-$electric equation is based upon the conservation of:
✓
Answer
Einsteins photoelectric equations states that
$E_{k }= hν − \phi$
where, $E_k$ is maximum kinetic energy of emitted photoelectrons
$h$ is plank's constant.
$ν$ is frequency of incident light
$\phi$ is work function of metal.
So, it is clearly based upon energy conservation.
$E_{k }= hν − \phi$
where, $E_k$ is maximum kinetic energy of emitted photoelectrons
$h$ is plank's constant.
$ν$ is frequency of incident light
$\phi$ is work function of metal.
So, it is clearly based upon energy conservation.
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
A conducting rod of length $2l$ is rotating with constant angular speed $w$ about its perpendicular bisector. A uniform magnetic field $\vec{B}$ exists parallel to the axis of rotation. The $e.m.f.$ induced between two ends of the rod is
→Imagine an atom made up of a proton and a hypothetical particle of double the mass of the electron but having the same charge as the electron. Apply the Boh’r atom model and consider all possible transitions of this hypothetical particle to the first excited level. The longest wavelength photon that will be emitted has wavelength l $($given in terms of the Rydberg constant $R$ for the hydrogen atom$)$ equal to
→A point object O is placed on the principal axis of a convex lens of focal length f = 20cm at a distance of 40cm to the left of it. The diameter of the lens is 10cm. An eye is placed 60cm to right of the lens and a distance h below the principal axis. The maximum value of h to see the image is:
A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is(a) Equal to that due to gravity (b) Less than that due to gravity(c) More than that due to gravity(d) Depends on the diameter of the ring and the length of the magnet
Assertion : A circular loop carrying current lies in XY plane with its center at origin having a magnetic flux in negative Z-axis.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Photons of energies $1eV$ and $2eV$ are successively incident on a metallic surface of work function $0.5eV.$ The ratio of kinetic energy of most energetic photoelectrons in the two cases will be:
→Which of the following statement is true about the relation between electric field and potential?
Assuming that universe is expanding, if the spectrum of light coming from a star which is going away from earth is tested, then in the wavelength of light(a) There will be no change(b) The spectrum will move to infrared region(c) The spectrum will seems to shift to ultraviolet side(d) None of the above
The atomic weight of silver and copper are 108 and 64. A silver voltameter and a copper voltameter are connected in series and when current is passed 10.8 gm of silver is deposited. The mass of copper deposited will be(a) 6.4 gm(b) 12.8 gm(c) 3.2 gm(d) 10.8 gm
An inductor $\frac{10\Omega}{60^\circ}$ is connected to a $5\Omega$ resistance in series. Find net impedance.
→