What is the formula for calculating the speed of light in a medium?

AI Thread Summary
To calculate the speed of light in a medium, the formula used is v = c/n, where v is the speed of light in the medium, c is the speed of light in a vacuum (approximately 3 x 10^8 m/s), and n is the refractive index of the medium. For water with n = 1.33, diamond with n = 2.42, and quartz with n = 1.54, the respective speeds can be calculated using this formula. The discussion emphasizes the importance of showing work in calculations as per forum rules. Participants are encouraged to provide specific details when seeking help. Understanding the formula is crucial for accurate calculations in physics.
RoseCrye
Messages
16
Reaction score
0
1.Find the speed of light in the following in m/s...


(a) water (n = 1.33)

(b) diamond (n = 2.42)

(c) quartz (n = 1.54)

i can't seem to get any of these right...
 
Physics news on Phys.org
Please show some work. Its the rules of the forum. We're not supposed to help you until you do.
 
looking for a formula...

G01 said:
Please show some work. Its the rules of the forum. We're not supposed to help you until you do.

ooops. sorry, didn't think about that. problem was, i wasn't even sure how to do it. didn't have a formula, and i couldn't find one. that was really what i was looking for... i'll try to be more specific next time.
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

What is the angle of incidence?
Replies
7
Views
2K
Inside glass, can I apply relativity of speed for light?
Replies
4
Views
1K
How Long for a Beam of Light to Reach Earth?
Replies
21
Views
1K
Problem involving interference and medium with index n
Replies
1
Views
1K
B One-Way Speed of Light
2
Replies
93
Views
5K
Fizeau's Experiment (Speed of light)
Replies
6
Views
4K
I Speed of information in a medium
Replies
38
Views
4K
I What accelerates the light back to its constant speed?
Replies
5
Views
1K
I Speed faster than light speed in a medium
Replies
8
Views
3K
B If light beam travels through a vacuum, then through diamond, then through more vacuum...
Replies
15
Views
2K

Hot Threads

Recent Insights

Back
Top