Podcast
Questions and Answers
Materials that allow some small amount of light to pass through are called ______ materials.
Materials that allow some small amount of light to pass through are called ______ materials.
Translucent
Materials that do not allow light to pass through them are called ______ materials.
Materials that do not allow light to pass through them are called ______ materials.
Opaque
Light travels with a speed of 3 x 10^8 m/s in ______.
Light travels with a speed of 3 x 10^8 m/s in ______.
air
The term given to the property that shows how light travels in a straight line is called ______ Propagation of light.
The term given to the property that shows how light travels in a straight line is called ______ Propagation of light.
Signup and view all the answers
A collection of light rays travelling in a specific direction is called a ______.
A collection of light rays travelling in a specific direction is called a ______.
Signup and view all the answers
There are two main sources of light. They are Natural sources and ______ sources.
There are two main sources of light. They are Natural sources and ______ sources.
Signup and view all the answers
An object that consists of a box painted black on the inside with a small hole at the other end is called a Pinhole ______
An object that consists of a box painted black on the inside with a small hole at the other end is called a Pinhole ______
Signup and view all the answers
The area of darkness cast on a screen when an opaque object is placed in front of a light source is called ______
The area of darkness cast on a screen when an opaque object is placed in front of a light source is called ______
Signup and view all the answers
The total area of darkness cast by an opaque object between a point source of light and a screen is called ______
The total area of darkness cast by an opaque object between a point source of light and a screen is called ______
Signup and view all the answers
The partial shadow surrounding an umbra formed by an opaque object between an external source of light and a screen is ______
The partial shadow surrounding an umbra formed by an opaque object between an external source of light and a screen is ______
Signup and view all the answers
The type of eclipse that occurs when the earth comes between the moon and the sun in a straight line is called ______ Eclipse
The type of eclipse that occurs when the earth comes between the moon and the sun in a straight line is called ______ Eclipse
Signup and view all the answers
A kind of eclipse where only part of the earth or moon is covered is known as ______ eclipse
A kind of eclipse where only part of the earth or moon is covered is known as ______ eclipse
Signup and view all the answers
The bouncing back of light when it strikes a surface is called ______ of light
The bouncing back of light when it strikes a surface is called ______ of light
Signup and view all the answers
The first law of reflection states that the incident ray, the normal, and reflected ray at a point of incidence, all lie in the same ______
The first law of reflection states that the incident ray, the normal, and reflected ray at a point of incidence, all lie in the same ______
Signup and view all the answers
The ray perpendicular to the reflecting surface during reflection of light is called ______
The ray perpendicular to the reflecting surface during reflection of light is called ______
Signup and view all the answers
A type of reflection that occurs when light rays fall on a smooth or polished surface is called Regular ______
A type of reflection that occurs when light rays fall on a smooth or polished surface is called Regular ______
Signup and view all the answers