MCQ
The sky would appear red instead of blue if
  • A
    Atmospheric particles scatter blue light more than red light
  • B
    Atmospheric particles scatter all colours equally
  • Atmospheric particles scatter red light more than the blue light
  • D
    The sun was much hotter

Answer

Correct option: C.
Atmospheric particles scatter red light more than the blue light
Colour of the sky is highly scattered light (colour).

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

A galvanometer coil has a resistance of $12\,\Omega $ and meter shows full scale deftection for a current of $3\,mA$ then to convert it into a voltmeter of range $0\,-18\, V$ a resistance should be added
The dispersive powers of crown and flint glasses are $0.02$ and $0.04$ respectively. In an achromatic combination of lenses the focal length of flint glass lens is $40 \mathrm{~cm}$. The focal length of crown glass lens will be
A good lubricant should have
There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is
A mass $m$ is suspended by means of two coiled spring which have the same length in unstretched condition as in figure. Their force constant are $k$ and $k$ respectively. When set into vertical vibrations, the period will be
Image
 
Which of the accompanying $P V$, diagrams best represents an isothermal process
A gas for which $\gamma=1.5$ is suddenly compressed to $\frac{1}{4}$ th of the initial volume. Then the ratio of the final to the initial pressure is
If the temperature of cold junction of thermocouple is lowered, then the neutral temperature
The work done in an adiabatic change in a gas depends only on
A boy walks uniformally along the sides of a rectangular park of size $400 m \times 300 m$, starting from one corner to the other corner diagonally opposite. Which of the following statement is incorrect