Question

Dispersion of light occurs in prism but not in a glass slab.Why??

Answer 1

heya!
here's your answer!


➡well , a straightforward explanation of your answer will be in a yes. 

➡yes , when a beam of white light is passed through a hollow prism .. it refracts to produce the spectrum of 7 colours .

➡ the spectrum includes 
◾V- violet \
◾I - indigo \ 
◾b - blue \
◾g - green l ⏩ this is called Vibgyor
◾y - yellow /
◾o - orange/
◾r - red /

➡ this happens because the two faces of the prism act together like a glass slab .. which does not reflect light 

➡ rather refracts it - now if you pass a spectrum through the prism - a clear beam of white light will come out from it 

➡ but you must be thinking why this happens?
well .. this happens because when you combine these 7 colours can, white will be formed 

➡ we're able to see the layers of the colours Because all the colours have different wavelengths and refractive indexes 

➡ the glass slab gives spectrum too but it's not seen because the glass slab is too slender and narrow .. naked eyes can't see it

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HOPE THIS HELPS YOU:)
ANVI GOTTLIEB
BRAINLY BENEFACTOR ◻