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Margaret [11]
2 years ago
7

If for a given pair of media CR

Physics
1 answer:
nika2105 [10]2 years ago
7 0

CR​ < CY​ < CB​

<h3>Which factors affect the critical angle for a given pair of media?</h3>

The factors which affect the critical angle are

(a) The colour (or wavelength) of light

(b) The temperature

(i) Effect of colour of light: The critical angle for a pair of media is less for the violet light and more for the red light. Thus the critical angle increases with the increase in wavelength of light.

(ii) Effect of temperature: The critical angle increases with increase in temperature because on increasing temperature of medium, its refractive index decreases.

According to the question,

μ 1​ sinCR​ =1

μ 2​ sinCY =1

μ 3​ sinCB​ =1

μ 1​ > μ 2​  and μ 2​ > μ 3

⟹μ 1​ > μ 2​ > μ 3

CR​ < CY​ < CB​

Thus,

The critical angle increases with the increase in wavelength of light.

Learn more about wavelength of light here:

brainly.com/question/27557868

#SPJ1

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The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and invers
soldier1979 [14.2K]

Answer:

L' = 555.95 lb

Explanation:

Analyzing the given conditions in the question, we get

The safe load, L is directly proportional to width (w) and square of depth (d²)

 also,

L is inversely proportional length (l) i.e L = k/l

combining the above conditions, we get an equation as:

 L = k(wd²/l)

 now, for the first case we have been given

w = 3 in

d = 6 in

l = 11 ft

L = 1213 lbs

 thus,

1213 lb = k ((3 × 6²)/11)

or

k = 123.54 lbs/(ft.in³)  

Now,

Using the calculated value of k to calculate the value of L in the second case  

in the second case, we have

w = 6 in

d =3 in

l = 12 ft

Final Safe load L' =  123.54 × (6 × 3²/12)

or

L' = 555.95 lb

6 0
3 years ago
6. A baseball player leads off the game and hits a long home run. The ball leaves the bat at an angle
dangina [55]

Answer:

I don't really know this one sorry

6 0
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A plane electromagnetic wave with wavelength 3.0 m, travels in free space in the+xdirection with its electric field vector~E, of
mart [117]

Answer:

    f =1 10⁸ Hz

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The speed of an electromagnetic wave is given by

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6 0
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describe the relationship between the direction of the velocity vector and the direction of the acceleration for a body moving i
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Answer:

a = v²/r

Explanation:

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a = v²/r where

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7 0
3 years ago
A spring is hanging from the ceiling. When a 250 gram of mass is attached to the free end, the spring elongates by 5 cm. The spr
lord [1]

Answer:

k = 49 N/m

Explanation:

Given that,

Mass, m = 250 g = 0.25 kg

When the mass is attached to the end of the spring, it elongates 5 cm or 0.05 m. We need to find the spring constant. Let it is k.

The force due to mass is balanced by its weight as follows :

mg=kx

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So, the spring constant of the spring is 49 N/m.

8 0
3 years ago
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