Download App

Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
Question
A photosensitive surface emits photoelectrons when red light falls on it. Will the surface emit photoelectrons when blue light is incident on it? Give reason.
✓

Answer

Yes
Reason $- ?_{????} > ?_{???}$
[Alternatively: Energy of blue light photon is greater than energy of red light photon.]

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 "1 Marks Question" from Dual Nature of Radiation and Matter→Dual Nature of Radiation and Matter — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

How does the mutual inductance of a pair of coils change when
  1. Distance between the coils is increased and
  2. Number of turns in the coils is increased?
→
Which of the following is a semi-conductor?
(i) Copper
(ii) Gallium Arsenide
(iii) Sulphur.
→
What is the ratio of the intensities of the points situtated at equal distances from the midpoint of a short bar magnet on its axial and non-axial points?
→
The instantaneous magnitudes of current and voltage in an ac circuit are given as $I =10 \sin 314 t A$ and $V =50 \sin \left(314 t +\frac{\pi}{2}\right) \quad V$ respectively. What is the dissipation of average power in the circuit?
→
Why does a metallic piece become very hot when it is surrounded by a coil carrying high frequency alternating current?
→
A convex lens whose refractive index is $n_2$, immersed in a liquid whose refractive index is $n_1,\left(n_2>n_1\right)$. What will be the difference in the working style?
→
An electron, an alpha particle and a proton have the same kinetic energy. Which one of these particles has the largest de-Broglie wavelength?
→
Which property of light is confirmed by the pattern of polarization?
→
Answer carefully:
If Coulomb’s law involved $\frac{1}{\text{r}^{3}}$ dependence $(\text{instead of}\ \frac{1}{\text{r}^{2}})$, would Gauss’s law be still true?
→
Name the electromagnetic radiations used for (a) water purification, and (b) eye surgery.
→