Science, asked by Aman7122, 1 year ago

plz tell this question . answer is 66.7%

Attachments:

Crazy1412: check the ans it should be 33.33%
vedvalp: The answer given is 66.7%
vedvalp: aman has said this
Crazy1412: its wrong
Crazy1412: https://mycbseguide.com/dashboard/content/10232
Crazy1412: go to this website and check Q no. 5 solution
vedvalp: okay thanks bro
vedvalp: bye

Answers

Answered by Crazy1412
2

n= speed of light in vaccum (c)/

speed of light in benzene(v)

 

∴v= 3× 10^ 8/ 1.50  m/s

=2× 10^ 8 m/s  

% decrease =  (3−2)× 10^ 8 / 3× 10^8   ×100%

= 33.33 %

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