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 2 years ago
A fish in an aquarium approaches the left wall at a rate of 3 m/s and observes a fly approaching it at 8 m/s. If the refractive index of water is 4/3, find the actual velocity of the fly.Explain with steps..pls help!!!:(
 2 years ago
A fish in an aquarium approaches the left wall at a rate of 3 m/s and observes a fly approaching it at 8 m/s. If the refractive index of water is 4/3, find the actual velocity of the fly.Explain with steps..pls help!!!:(

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King
 2 years ago
Best ResponseYou've already chosen the best response.0actual velocity of fly=3.75m/s

Aadarsh
 2 years ago
Best ResponseYou've already chosen the best response.1We know that, Speed of light in air / Speed of light in water = 4/3 Or, 3 * 10^8 / x = 4/3 Or, x = 2.25 * 10^8 Now, 2.25*10^8 = 3 So, 3*10^8 = 3/(2.25 * 10^8) * 3*10^8 = 9/2.25 = 4

Aadarsh
 2 years ago
Best ResponseYou've already chosen the best response.1Not getting how it is 3.75 m/s

Aadarsh
 2 years ago
Best ResponseYou've already chosen the best response.1I just equated for the sake of unitary method, since fish is in water. It may be wrong.

King
 2 years ago
Best ResponseYou've already chosen the best response.0ok the ray refracts twice so?

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2so, get me the refractive index of Glass...

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2arre book mein dheko na

King
 2 years ago
Best ResponseYou've already chosen the best response.0oh..i dont hav a book mein 10th mein hoon just passed this prob is frm a sample paper

Aadarsh
 2 years ago
Best ResponseYou've already chosen the best response.1Given taht R.F. of water is 4/3. Glass refractive index = 1.52(crown glass)

King
 2 years ago
Best ResponseYou've already chosen the best response.0yeah and fr flint glass it is 1.62

King
 2 years ago
Best ResponseYou've already chosen the best response.0For the fish, the apparent distance of the fly from the wall of the aquarium is µx, where µ is the R.I. of water and x is the actual distance, then apparent velocity will be . Therefore, actual velocity of fly = (8 – 3) * (3/4) = 3.75 m/s. This is the sol. given can u explain this?

Aadarsh
 2 years ago
Best ResponseYou've already chosen the best response.1Check in 10th NCERT, crown glass' R.F. is 1.52

King
 2 years ago
Best ResponseYou've already chosen the best response.0yeah i know that i just told fr flint glas it is 1.62

King
 2 years ago
Best ResponseYou've already chosen the best response.0so salini,ishaan,aadarsh can a ny of u explain the above sol.?

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2Oh, don't consider Glass, you will have to ignore Glass, my bad :/

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2btw Glass can't be ignored in real life

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1332858159715:dwApparent Velocity of fly = 83.

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.2because the apparent velocity is from the frame of reference in water.

salini
 2 years ago
Best ResponseYou've already chosen the best response.0u have to have an idea abt relative velocity ie velocity of f fly with res[pect to velocity of fish(since both are moving) VflyVfish=relative velocity of fly with respect to fish in water i think u can figure out the rest

salini
 2 years ago
Best ResponseYou've already chosen the best response.0IN WATER CONDITION is wat i have discussed above so do the same thing in air using R.I multiply by 3/4

King
 2 years ago
Best ResponseYou've already chosen the best response.0can u pls xplain why i hav to divide by refractive index

salini
 2 years ago
Best ResponseYou've already chosen the best response.0wat is R.I? DID u understand the relative velocity part(it is nothing but how the fish sees the fly when it is moving)

King
 2 years ago
Best ResponseYou've already chosen the best response.0refractive index ya i understood the r.v part

salini
 2 years ago
Best ResponseYou've already chosen the best response.0right wat is the expression?

salini
 2 years ago
Best ResponseYou've already chosen the best response.0refractive index of medium 1 with respect to medium 2?

salini
 2 years ago
Best ResponseYou've already chosen the best response.0it is speed of light in medium 2/speed of light in medium 1 =r.i of medium 2 use this and put the values u

King
 2 years ago
Best ResponseYou've already chosen the best response.0@salini sry gtg can u pst solution and i shall se it tom

salini
 2 years ago
Best ResponseYou've already chosen the best response.0thts ball u gotto work out with the expressions i gave remember it is velocity of fly in water (actual) that i gave u with relative velocity concept bye! my god this site is very slow!

salini
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1332861296812:dwso when u do the pproblem Vmf is only given Vmf=VmVf 8=Vm(3) that is how it is 5m/s velocity of moth in water
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