Download App

Electron, Photon, Photoelectric Effect and X-Rays — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectron, Photon, Photoelectric Effect and X-Rays1 Mark
Question
When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then(a) No electrons are emitted(b) Photons are emitted(c) Electrons of higher energy are emitted(d) Electrons of lower energy are emitted
 
 
 
 
✓

Answer

(a) No electrons are emitted

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

Explore more

More "M.C.Q (1 Marks)" from Electron, Photon, Photoelectric Effect and X-Rays→Electron, Photon, Photoelectric Effect and X-Rays — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

In double slit experiment, the angular width of the fringes is $0.20^{\circ}$ for the sodium light $( \lambda=5890 \mathring A ).$ In order to increase the angular width of the fringes by $10 \%,$ the necessary change in the wavelength is
→
In photoelectric effect, the K.E. of electrons emitted from the metal surface depends upon(a) Intensity of light(b) Frequency of incident light(c) Velocity of incident light(d) Both intensity and velocity of light
   
   
→
The patient is asked to drink $\mathrm{BaSO}_4$ tor examining the stomach by $X-$rays because $X-$rays are
→
Assertion :   Mass of moving photon varies inversely as the wavelength.
Reason : Energy of the particle $=$ Mass $\times (\text { Speed of light })^2$
→
Assertion :   Base in a transistor is made very thin as compared to collector and emitter regions.                
Reason     : Due to thin base power gain and voltage gain is obtained by a transistor.(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.
 
 
 
 
→
An electromagnetic wave going through vacuum is described by $\text{E}=\text{E}_0\sin(\text{kx}-\omega\text{t});\text{B}=\text{B}_0\sin(\text{kx}-\omega\text{t}).$ Which of the following equation is true?
→
The capacitor offers zero resistance to.
→
Assertion  : Radioactive nuclei emit $\beta^{-1}$  particles.
Reason      : Electrons exist inside the nucleus.
→
The size of an object as perceived by an eye depends primarily on:
→
Materials which allow only larger currents to flow through them are:
→