A community for students.
Here's the question you clicked on:
 0 viewing
 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!!!:(

This Question is Closed

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
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.