Download App

Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics2 Marks
Question
Explain the first law of reflection of light.
✓

Answer

According to Huygens' principle, reflection of light has been explained in this way :
Angle of incidence $\angle i=$ Angle of reflection $\angle r$. In this, the incident wave front, reflected wave front and normal all three lie in the same plane.

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 "2 Marks Questions" from Wave Optics→Wave Optics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

State and explain Lenz's law
→
What information would you wish to know about the galvanometer before converting it into an ammeter or voltmeter?
→
What is meant by polarization of light?
→
Plot a graph showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive materials having work functions $W_1$ and $W_2\left(W_1>W_2\right)$. On what factors does the (i) slope and (ii) intercept of the lines depend?
→
The light emitted in the transition n = 3 to n = 2 in hydrogen is called $\text{H}_\alpha$ light. Find the maximum work function a metal can have so that $\text{H}_\alpha$ light can emit photoelectrons from it.
→
On what does the work function of a metal depend?
→
An atom absorbs a photon of wavelength 500nm and emits another photon of wavelength 700nm. Find the net energy absorbed by the atom in the process.
→
A tuning fork of frequency 256Hz produces 4 beats per second with a wire of length 25cm vibrating in its fundamental mode. The beat frequency decreases when the length is slightly shortened. What could be the minimum length by which the wire be shortened so that it produces no beats with the tuning fork?
→
What will be the effect on the magnetic flux associated with a coil located in any external magnetic field when
(i) Number of turns in the coil are increased?
(ii) Area of plane of the coil is increased?
(iii) Intensity of magnetic field of the coil is increased
→
Find the time required to liberate 1.0 litre of hydrogen at STP in an electrolytic cell by a current of 5.0A.
→