44 Questions
What happens to the reflected rays when light reflects off a smooth surface?
They are parallel
What is reflection of light?
The bouncing of light off a surface
What is an example of a rough surface?
Rippled water
What is the purpose of measuring the angles of incidence and reflection in the practical investigation?
To verify that they are equal
What is the incident ray?
The ray of light that strikes a surface
What is the type of reflection that occurs on a smooth surface?
Specular reflection
What is the purpose of the normal line?
To understand and measure reflection
What is the result of light reflecting off a rough surface?
A diffuse and unclear reflection
What is the relationship between the angle of incidence and the angle of reflection?
The angle of incidence is equal to the angle of reflection
What happens to light when it reflects off a surface?
It changes direction
What is the reflected ray?
The ray of light that bounces off a surface
What is the term for being at an angle of 90 degrees to a given line or surface?
Perpendicular
What is an example of a reflective surface?
A still lake
What is the primary difference between a smooth surface and a rough surface in terms of reflection?
Uniformity of reflected rays
What can be observed when shining a flashlight at different angles on a mirror?
The angle of incidence is always equal to the angle of reflection
What is the purpose of the practical investigation with a flashlight and a mirror?
To verify the law of reflection
What can be inferred from the image shown in the Reflection Comparison diagram?
The rough surface scatters light in different directions
What is the characteristic of the reflection that occurs on a smooth surface like a mirror?
The reflected rays are parallel and focused
What is the main purpose of the normal line in understanding reflection?
To determine the point of incidence on the surface
What is the relationship between the angle of incidence and the angle of reflection according to the law of reflection?
The angle of incidence is equal to the angle of reflection
What is the term used to describe the ray of light that strikes a surface?
Incident ray
What is the result of the incident ray hitting a smooth surface?
The light is reflected off the surface
What is the role of the normal line in measuring angles of incidence and reflection?
It provides a reference point for measuring both angles of incidence and reflection
What is an example of a situation where reflection of light can create a mirror image?
A still lake
What is the term used to describe being at a 90-degree angle to a given line or surface?
Perpendicular
What happens to the direction of light when it reflects off a surface?
It changes direction
What is the primary reason for the difference in reflection between smooth and rough surfaces?
The uniformity of the surface structure
What is the purpose of measuring the angles of incidence and reflection in the practical investigation?
To verify that the angles of incidence and reflection are equal
What is the characteristic of the image formed by specular reflection from a smooth surface?
Clear and focused
What is the role of the flashlight in the practical investigation?
To produce a parallel beam of light
What can be inferred about the surface of still water from the Reflection Comparison diagram?
It can produce a clear and focused image
What is the primary reason why a still lake can act as a mirror?
The lake's surface is smooth.
What is the role of the normal line in measuring angles of incidence and reflection?
To provide a reference point for measuring angles.
What is the relationship between the angle of incidence and the angle of reflection according to the law of reflection?
The angle of incidence is equal to the angle of reflection.
What happens to the direction of light when it reflects off a surface?
It changes direction.
What is the purpose of understanding reflection?
To study the properties of light.
What is the characteristic of the normal line?
It is perpendicular to the surface.
What is the result of the incident ray hitting a smooth surface?
The light is reflected.
What is an example of a situation where reflection can create a mirror image?
A still lake.
What is the main difference between specular reflection and diffuse reflection?
The clarity of the reflected image
In the practical investigation, what is the purpose of shining the flashlight at different angles on the mirror?
To verify the law of reflection
What is the characteristic of the surface of still water that allows it to act as a mirror?
It is smooth and uniform
What can be observed when light reflects off a rough surface?
A diffuse and unclear image
What is the purpose of measuring the angles of incidence and reflection in the practical investigation?
To verify the law of reflection
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