Question
One cannot see through fog because .......... :
✓
Answer
- Light is scattered by the droplets in fog.
We cannot see through fog because of scattering.
Atoms and molecules in the air, including anything carried in the air like dust or smoke, will scatter light. Water droplets, as they are present in fog, also scatter light.
The light falling on an object and reflected to a viewer can be scattered to heck and back before it gets to the place where it can be 'seen' by an observer.
So the observer just sees a 'whiteout' instead of being able to make out anything beyond a few meters or so.
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
When an ammeter is shunted, its measuring range :
A bar magnet is situated on a table along east-west direction in the magnetic field of earth. The number of neutral points, where the magnetic field is zero, are(a) 2(b) 0(c) 1(d) 4
Intensity of an electric field $E$ due to a dipole, depends on distance $r$ as
→An elastic circular wire of length $l$ carries a current $I.$ It is placed in a uniform magnetic field $\overrightarrow{ B } ($Out of paper$)$ such that its plane is perpendicular to the direction of $\overrightarrow{ B }$. The wire will experience
→An equi $-$ convex crown glass lens has a focal length $20 \ cm$ for violet rays. Here $\mu_{ v }=1.5 \ \mu_{ r }=1.47$. Its focal length for red rays is
→If the phase difference between Alternating Voltage and Alternating Current is $\frac{\pi}{6}$ and the resistance in the circuit is $\sqrt{300}\Omega,$ then the impedance of the circuit will be.
→The radii of two metallic spheres $P$ and $Q$ are $r_1$ and $r_2$ respectively. They are given the same charge. If $r_1 > r_2$. then on connecting them with a thin wire, the charge will flow
→A fish rising vertically up towards the surface of water with speed $3 \ ms^{–1}$ observes a bird diving vertically down towards it with speed $9 \ ms^{–1}.$ The actual velocity of bird is
→When a charged particle moves through a magnetic field, the quantity which is not affected in the magnetic field is:
In a mean life of a radioactive sample(a) About 1/3 of substance disintegrates(b) About 2/3 of the substance disintegrates(c) About 90% of the substance disintegrates(d) Almost all the substance disintegrates