MCQ
Huygens' concepts of secondary wavelets
- AAllow us to find the focal length of a thin lens
- BGive the magnifying power of a microscope
- ✓Are a geometrical method to find a wavefront
- DAre used to determine the velocity of light
✓
Answer
Correct option: C.
Are a geometrical method to find a wavefront
c
(c)
(c)
Huygens' concepts of secondary wavelets are a geometrical method to find a wavefront.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A ring of radius $R$ is charged uniformly with a charge $+\,Q$ . The electric field at a point on its axis at a distance $r$ from any point on the ring will be
→An interference pattern was made by using red light. If the red light changes with blue light, the fringes will become
The cause of the potential barrier in a P-N diode is
Can a metal be used as a medium for dielectric
The impedance of a series $\text{L - C - R}$ circuit in an $AC$ circuit is.
→An alternating voltage $\mathrm{V}(\mathrm{t})=220 \sin 100 \ \pi \mathrm{t}$ volt is applied to a purely resistive load of $50\ \Omega$. The time taken for the current to rise from half of the peak value to the peak value is:
→On heating a liquid, the refractive index generally
Four capacitors are connected as shown in the equivalent capacitance between the points $P$ and $Q$ is.......$\mu F$
→A square surface of side $L$ meter in the plane of the paper is placed in a uniform electric field $E(volt/m)$ acting along the same plane at an angle $\theta$ with the horizontal side of the square as shown in figure.The electric flux linked to the surface, in units of $volt \;m $
→Match List $- I$ with List $- II:$
→| List$-1$ (Electromagnetic waves) | List$-2$ (Wavelength) |
| $(a)$ $AM$ radio waves | $(i)$ $10^{-10}\,m$ |
| $(b)$ Microwaves | $(ii)$ $10^{2}\,m$ |
| $(c)$ Infrared radiations | $(iii)$ $10^{-2}\,m$ |
| $(d)$ $X-$rays | $(iv)$ $10^{-4}\,m$ |
Choose the correct answer from the options given below: