Solve
Guides
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Standard XII
Physics
Question

Photoelectric effect:
  1. cannot be exhibited by liquids and gases
  2. is seen in liquids as they can undergo electrolysis
  3. is seen in gases as they can undergo ionisation
  4. both (b) and (c)

A
is seen in gases as they can undergo ionisation
B
both (b) and (c)
C
cannot be exhibited by liquids and gases
D
is seen in liquids as they can undergo electrolysis
Open in App
Solution
Verified by Toppr

The effect is based on the idea that electromagnetic radiation is made of a series of particles called photons. When a photon hits an electron on a metal surface, the electron can be emitted. The emitted electrons are called photoelectrons.

Was this answer helpful?
1
Similar Questions
Q1
_________ represents assets and properties which cannot be seen, touched or felt but they can be measured in terms of money.
View Solution
Q2
Sara has two rectangles, as can be seen below.


Are they congruent?
View Solution
Q3
Fill in the following blanks with suitable words :
(a) Miscible liquids are separated by .........................
(b) Immiscible liquids are separated by using a ........................
(c) A mixture of kerosene and petrol can be separated by ........................
(d) The separation of liquids by fractional distillation is based on the difference in their ............................
(e) The gases of air can be separated by fractional distillation of liquid air because they have different ......................
(f) A heterogeneous mixture of liquid and solid is conveniently separated by ............................
(g) If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
View Solution
Q4
Hydrogen, nitrogen and oxygen are gases at ordinary room temperature. They can be liquified by cooling. The liquid form of these gases is held together by a weak attraction among the molecules, known as:
View Solution
Q5
Why are convection currents seen in liquids and gases, and not in solids?
View Solution