The answer is (b) 0o.

Here's the step by step explanation:

1. An incident ray that strikes the surface of a glass slab at an angle of 90° is said to be striking the surface "normally", or perpendicular to the surface.

2. According to Snell's Law, which governs the refraction of light, the angle of refraction (the angle at which the light ray exits the glass slab) is determined by the incident angle and the refractive indices of the two media (in this case, air and glass).

3. However, when the incident ray is perpendicular to the surface (i.e., at 90°), it doesn't bend and continues in the same path. This is because the light is transitioning from one medium to another along the "normal" line, or the line that is perpendicular to the surface.

4. Therefore, the angle of refraction in this case is 0°, meaning the refracted ray continues along the same path as the incident ray, but inside the glass slab.

Question

The answer is (b) 0o.

Here's the step by step explanation:

1. An incident ray that strikes the surface of a glass slab at an angle of 90° is said to be striking the surface "normally", or perpendicular to the surface.

2. According to Snell's Law, which governs the refraction of light, the angle of refraction (the angle at which the light ray exits the glass slab) is determined by the incident angle and the refractive indices of the two media (in this case, air and glass).

3. However, when the incident ray is perpendicular to the surface (i.e., at 90°), it doesn't bend and continues in the same path. This is because the light is transitioning from one medium to another along the "normal" line, or the line that is perpendicular to the surface.

4. Therefore, the angle of refraction in this case is 0°, meaning the refracted ray continues along the same path as the incident ray, but inside the glass slab.

Knowee AI · Accepted Answer

The answer is (b) 0o.

Here's the step by step explanation:

1. An incident ray that strikes the surface of a glass slab at an angle of 90° is said to be striking the surface "normally", or perpendicular to the surface.

2. According to Snell's Law, which governs the refraction of light, the angle of refraction (the angle at which the light ray exits the glass slab) is determined by the incident angle and the refractive indices of the two media (in this case, air and glass).

3. However, when the incident ray is perpendicular to the surface (i.e., at 90°), it doesn't bend and continues in the same path. This is because the light is transitioning from one medium to another along the "normal" line, or the line that is perpendicular to the surface.

4. Therefore, the angle of refraction in this case is 0°, meaning the refracted ray continues along the same path as the incident ray, but inside the glass slab.

8. An incident ray making an angle of 90° with the surface of a glass slab, after refraction the angle ofrefraction is equal to.(a) 90o (b) 0o (c) 45o (d) none of these

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