Which statement correctly compares the speed of light

Physics

2 answers:

11111nata11111 [884]4 years ago

6 0

<u>Answer:</u> The correct answer is Option D.

<u>Explanation:</u>

Refractive index is defined as the ratio of speed of light in vacuum to the speed of light in medium. It is represented as $\eta$ . Speed of light in vacuum is always equal to $3\times 10^8m/s$

Mathematically,

$\eta=\frac{\text{Speed of light in vacuum}}{\text{Speed of light in medium}}$

If the refractive index is more, the speed of light in that medium will be slow and vice-versa.

As, the refractive index of glass is more than the refractive index of space. Hence, the speed of light will be slower in glass.

Therefore, the correct answer is Option D.

Elodia [21]4 years ago

4 0

The speed of light in glass is slower than the speed of light through space.

You might be interested in

In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how large wou

Evgesh-ka [11]

Answer:

size of popcorn seed may meet the scaled earth size of x = 0.07312 in.

Explanation:

Given:-

- The diameter of actual sun, Ds = 1.3927 * 10^6 km

- The diameter of model sun ball, ds = 8 in

- The diameter of the actual earth, De = 12,742 km

Find:-

How large would be the earth model

Solution:-

- We can use the actual diameters of the earth and sun to develop the ratio of earth diameter to that of sun. The direct ratio can be used to model the diameter of earth for the scale model

Sun Earth

Actual : 1392700 km 12,742 km

Scale : 8 in x

- Use direct relations and solve for x:

x = (8 in)*(12,742 km ) / ( 1392700 km )

x = 0.07312 in.

- From the given options apple, grapefruit and marble diameters are larger than 1 inch. So only the size of popcorn seed may meet the scaled earth size of x = 0.07312 in.

4 0

3 years ago

Read 2 more answers

Can someone help please I’ll mark brainless

morpeh [17]

Answer:

Synthesis Reaction

Explanation:

6 0

3 years ago

Read 2 more answers

An electron and a positron are located 17 m away from each other and held fixed by some mechanism. The positron has the same mas