When potassium metal is exposed to viole...

When potassium metal is exposed to violet light

Ejection of electrons takes place

Ejection of some potassium atoms occurs

There is no effect

The absorption of electrons takes place

Text Solution

Verified by Experts

The correct Answer is:

When potassium is exposed to violet light ejection of photo-eloectrons takes place due to photo-electric effect.

Topper's Solved these Questions

ATOMIC STRUCTURE
DINESH PUBLICATION|Exercise Selected Straight Objective Type MCQs|70 Videos
ATOMIC STRUCTURE
DINESH PUBLICATION|Exercise Compre.|17 Videos
ATOMIC STRUCTURE
DINESH PUBLICATION|Exercise Ultimate Preparatory Package|15 Videos
APPENDIX
DINESH PUBLICATION|Exercise Completion Reactions|15 Videos
BIOMOLECULES
DINESH PUBLICATION|Exercise Reason|1 Videos

Similar Questions

Explore conceptually related problems

Red and violet light have

If a metal is exposed with light of wavelength lambda, the maximum kinetic energy produced is found to be 2 eV. When the same metal is exposed to a wavelength (lambda)/(5) the maximum kinetic energy was found to be 14 eV. Find the value of work function (in eV).

The minium energy required to remove the electron from metal surface is 7.50 xx 10^(-19) J . What will be the stopping potential required when this metal surface is exposed to U.V. light of lambda = 375 Å ?

Animals exposed to bright light have

Work function of potassium metal is 2.30 eV . When light of frequency 8xx 10^(14) Hz is incident on the metal surface, photoemission of electrons occurs. The stopping potential of the electrons will be equal to

If lambda_0 is the Threshold wavelength of a metal for photoelencron emisssion . If the metal is exposed to the light of wavelngth lambda then the velocity of ejectred electgron will be sqrt ((2h)/m ( lambda_0 - lambda) K ) . The value fo (K) is :

The work function for Ag metal is 7 .5 xx 10^(-19) J . As metal is being exposed to the light of frequency 1220 Å . Which is // are correct statements?

Which of the following oxides is formed when potassium metal is burnt in excess air ?

DINESH PUBLICATION-ATOMIC STRUCTURE-Revision Questions

Calculate the magnetic moment of a divalent ion in aqueous solution if...
Text Solution
|
The most probable radius (in pm) for finding the electron in He^(+) is...
Text Solution
|
When potassium metal is exposed to violet light
Text Solution
|
The H-spectrum confirms
Text Solution
|
Electrons will first enterinto the orbital with the set of quantum num...
Text Solution
|
A metal surface is exposed to solar radiations. Which of the following...
Text Solution
|
In which of the following transition will the wavelength be minimum ?
Text Solution
|
Which of the following set of quantum numbers is not possible for an e...
Text Solution
|
The angular momentum of an electron revolving in a p-orbital is
Text Solution
|
The angular momentum of an electron is zero. In which orbital may it b...
Text Solution
|
Determine de-Broglie wavelength of an electron having kinetic energy o...
Text Solution
|
For a Bohr atom, angular momentum of an electron is (n = 0, 1,2 ........
Text Solution
|
The radus of hydrogen atom in the ground state 0.53 Å. The radius of L...
Text Solution
|
The atomic numbers of Ni and Cu are 28 and 29 respectively. The electr...
Text Solution
|
Which of the folowing statements is incorrect about an atomic orbital?
Text Solution
|
The maximum number of impaired electrons are in
Text Solution
|
A body of mass 10 mg is moving with a velocity of 100 ms^(-1). The wav...
Text Solution
|
What is the wave number of 4th line in Balmer series of hydrogen spect...
Text Solution
|
If 0.50 mol of BaCl(2) is mixed with 0.20 mol of Na(3)PO(4), the maxim...
Text Solution
|
What is the maximum number of electron in an atom that can have the qu...
Text Solution
|