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# When measuring the angle of incidence and the angle of refraction the imaginary line drawn perpendicular to the surface at the point of incidence is called the?

Updated: 8/11/2023

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Q: When measuring the angle of incidence and the angle of refraction the imaginary line drawn perpendicular to the surface at the point of incidence is called the?
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### When measuring the angle of incidence and the angle of refraction the imaginary line drawn perpendicular to the surface at the point of the incidence is called?

It's called the normal.

### What are difficulties in measuring the angle of refraction for large angles of incidence?

law of reflection to test the alignment of the cylindrical lens

### What is the reference line in measuring the angles of incidence and angle reflection?

The reference line is the normal (perpendicular) to the surface.

### What is reference line in measuring the angle of incidence and the angle of reflection?

The reference line is the normal (perpendicular) to the surface.

### Why is it easier to measure the angle of incidence an the angle of reflection n a flat surface?

When talking about reflection (normally with light), one works out the angle of incidence and the angle of reflection by drawing a line that is perpendicular (90 degrees) to the reflector and measuring the angle between this line and the ray of incidence/reflection. This line is called the normal line. It is easier to measure the angles of incidence and reflection on a flat surface, because it is easier to draw an accurate normal line.

Totalstation

### How do they determine the clarity of a diamond?

Clarity of a diamond is an ANSII standardized procedure that involves placing a light near the diamond and measuring the refraction.

### What is the aim of measuring angles of refraction?

it describes that how much a wave refracted through a medium or by a medium..... through it we can decide that how much and at what point we will get it's intensity..

### What is the precaution to take when using measuring cylinder?

prevent trapping of air bubbles line of sight must be perpendicular to get the correct reading and avoid errors