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saul85 [17]
3 years ago
12

A ray of light traveling in glass (refractive index na) reflects at the flat interface between the glass and water (refractive i

ndex nb). The incident ray in glass makes an angle of θa with the normal to the interface and the reflected ray makes an angle of θr with the normal. If na is increased (by using a different type of glass) but θa is kept the same, how does θr change?
Physics
1 answer:
pickupchik [31]3 years ago
5 0

Answer:

θr  will increase.

Explanation:

We know that when light travel from one medium to another medium the relationship between refractive index and angle given as

na. sinθa = nb . sinθr

sin \theta _r=\dfrac{n_asin\theta _a}{n_b}

If na is increased (by using a different type of glass) but θa is kept the same then sinθr will also increase.

So answer is θr  will increase.

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To find the answer, we need to know about the third law of Kepler.

<h3>What's the Kepler's third law?</h3>
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<h3>What's the radius of geosynchronous orbit, if the time period and altitude of ISS are 90 minutes and 409 km respectively?</h3>
  • The time period of geosynchronous orbit is 24 hours or 1440 minutes.
  • As the Earth's radius is 6371 Km, so radius of the ISS orbit= 6371km + 409 km = 6780km.
  • If T1 and T2 are time period of geosynchronous orbit and ISS orbit respectively, a1 and a2 are radius of geosynchronous orbit and ISS orbit, as per third law of Kepler, (T1/T2)² = (a1/a2)³
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Thus, we can conclude that the altitude of geosynchronous orbit is 36,719km.

Learn more about the Kepler's third law here:

brainly.com/question/16705471

#SPJ4

   

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