Question 3 :
On passing white light through a glass prism. Whichcolour ray will deviate maximum towards its base?
Question 5 :
Why are red coloured lights are used in traffic signals to stop the vehicles?
Question 6 :
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light:<br/>
Question 8 :
Which colour of light is scattered the most(maximum) in the atmosphere?
Question 10 :
In the white light of sun, maximum scattering by the air molecules present in the earth's atmosphere is for:<br>
Question 11 :
What are the colours of the Sun observed most during sunrise/sunset and noon? <br/>
Question 12 :
If the image of distant objects is formed in front of the retina, the defect of vision may be
Question 13 :
Assertion: A beam of white light gives a spectrum on passing through a hollow prism.
Reason: Speed of light outside the prism is different from the speed of light inside the prism.
Question 14 :
Long-sightedness is caused by the eyeball being too short. It can be corrected by the use of a:
Question 16 :
The color of scattered light depends on ____ of the scattering particles.
Question 19 :
In context of scatteringFine particles : ____ wavelength : : large particles : _____ wavelength
Question 20 :
When white light is passed through two consecutive prisms, the resultant will be:
Question 23 :
When a white light ray falls on a prism, the ray at its first surface suffers:<br>
Question 27 :
An astronaut in a spaceship the sky appears black due to:
Question 28 :
The spectrum, in which the colours are separated using a narrow source of light, is called:
Question 30 :
The band of colours obtained on a screen on passing white light through a prism is called :
Question 31 :
Why do high rise buildings have a red light on the top of the building?
Question 32 :
Which colour of light is scattered the most(maximum) in the atmosphere?
Question 33 :
Name the prism required for obtaining the spectrum of ultraviolet light:<br/>
Question 34 :
What are the colours of the Sun observed most during sunrise/sunset and noon? <br/>
Question 36 :
The bluish colour of water in deep sea is due to:<br/>
Question 37 :
The sun appears red at the time of sun-rise and sun-set. This is because:
Question 38 :
The sun appears red at the time of sun-rise and sun-set. This is because:
Question 43 :
The inability among the elderly to see nearby objects clearly because of the weaking of the ciliary muscles is called
Question 44 :
The angle between the two refracting surface of a prism is called angle of :<br/>
Question 45 :
The path of beam of light becomes _____ in a colloidal solution.
Question 46 :
At sun rise of sunset, the sun looks more red than at mid-day because
Question 47 :
When Astronauts fly at higher altitude, the sky appears dark because ;
Question 48 :
For the myopic eye, the far point is farther away than the normal.
Question 49 :
CV Raman got the Nobel Prize for his experiment on :