MCQ
Blue colour of sky is due to:
  • Scattering.
  • B
    Absorption.
  • C
    Reflection.
  • D
    Refraction.

Answer

Correct option: A.
Scattering.
Blue light is scattered the most. Hence, as sunlight travels the earth, most of the blue colour is scattered and hence spread. This causes the sky to appear blue in the day.

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

Similar questions

The mass number of a nucleus is
Assertio : In the phenomenon of mutual induction, self induction of each of the coils persists.
Reason : Self induction arises when strength of current in same coil changes. In mutual induction, current is changing in both the individual coils.
What will be the ratio of de-Broglie wavelengths of proton and $\alpha - $ particle of same energy
Plate resistance when saturated current flows in the diode $r_p$ is :
The rate of disintegration of a fixed quantity of a radioactive element can be increased by
In the circuit shown in the figure, the input voltage $V_i$ is $20\,\, V, \,\,V_{BE} = 0 $ and $V_{CE}= 0.$ The values of $I_B\,,\,I_c$ and $\beta$ are given by
Six metallic plates each with a surface area of one side $A$, are placed at a distance $d$ from each other. The alternate plates are connected to points $P$ and $Q$ as shown in figure. The capacitance of the system is
A ray of light is incident on a transparent glass slab of refractive index $1.62$. The reflected and the refracted rays are mutually perpendicular. The angle of incidence is.......$^o$
A beam of ions with velocity $2 \times {10^5}\,m/s$ enters normally into a uniform magnetic field of $4 \times {10^{ - 2}}\,tesla$. If the specific charge of the ion is $5 \times {10^7}\,C/kg$, then the radius of the circular path described will be.......$m$
Assertion : Electron has higher mobility than hole in a semiconductor.
Reason : Mass of electron is less than the mass of hole.