Light Energy Properties Quiz
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Questions and Answers

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.

Opaque

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.

<p>Rectilinear</p> Signup and view all the answers

A collection of light rays travelling in a specific direction is called a ______.

<p>Beam</p> Signup and view all the answers

There are two main sources of light. They are Natural sources and ______ sources.

<p>Artificial</p> 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 ______

<p>camera</p> 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 ______

<p>Shadow</p> 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 ______

<p>Umbra</p> 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 ______

<p>Penumbra</p> 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

<p>Lunar</p> Signup and view all the answers

A kind of eclipse where only part of the earth or moon is covered is known as ______ eclipse

<p>partial</p> Signup and view all the answers

The bouncing back of light when it strikes a surface is called ______ of light

<p>Reflection</p> 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 ______

<p>plane</p> Signup and view all the answers

The ray perpendicular to the reflecting surface during reflection of light is called ______

<p>Normal</p> 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 ______

<p>reflection</p> Signup and view all the answers

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