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Shreenath Rajesh Nair from J H A S V Surat, Surat
Subject :NSO    Class : Class 8

A vessel contains two plane mirrors at right angles to each other as shown in the figure. If the vessel is filled with water then the total deviation in the ray incident normally is


A0°
B45°
C90°
D180°


Ans 1:

Rahul Jha from Delhi Public School BN, Bengaluru
Class : Class 8
Key Idea: Phenomenon of reflection is independent of medium. The deviation produced by combination of two plane mirrors is δ=2π−2θ =2π−2×π2 (θ=90o) ⇒ δ=π=180o. Hence, total deviation in incident ray is180o

Ans 2:

Khushi Chaudhuri from Step By step, Noida
Class : Class 8
Why does the deviation happen to be 180 degrees

Ans 3:

NAMAN HARITASH from DPS DLF CITY, GURGAON
Class : Class 9
but due to water refraction will also take place

Ans 4:

vrrsekar from INDIAN SCHOOL SUR OMAN, sur
Class : Class 6
Thank You Mr.Rahul

Ans 5:

Shaman Amin from SDM school, Mangalore
Class : Class 10
But wont the refraction of light in water play a role?

Ans 6:

S V Harini from Vailankanni public school , Krishnagiri
Class : Class 8
explain please....

Ans 7:

neelu desai from bombay scottish, mumbai
Class : Class 8

Ans 8:

ANUSHKA SHARMA from CAMBRIDGE COURT WORLD SCHOOL, JAIPUR
Class : Class 8
Please explain how the deviation has happened at 180 degrees

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