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Understanding Electromagnetic Radiation and Light Terminology

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Understanding Electromagnetic Radiation and Light Terminology

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Questions and Answers

Which type of wave is characterized by the medium vibrating at right angles to the direction of its propagation?

Transverse wave (correct)

Longitudinal wave

Surface wave

Electromagnetic wave

What term refers to objects that do not produce their own light?

Luminous

Transparent

Visible

Non-luminous (correct)

Which type of radiation includes visible light, radio waves, gamma rays, and X-rays?

Microwave radiation

Ultraviolet radiation

Electromagnetic radiation (correct)

Infrared radiation

What is the process by which one thing absorbs or is absorbed by another?

Absorption Signup and view all the answers

Which term describes material that allows light to pass through so that objects behind can be distinctly seen?

Translucent Signup and view all the answers

What is the rate per second of a vibration constituting a wave?

Frequency Signup and view all the answers

What is the angle of reflection?

The angle made by a reflected ray with a perpendicular to the reflecting surface Signup and view all the answers

What is the function of the cornea in the eye?

It allows light to enter the inside of the eye Signup and view all the answers

What is total internal reflection?

The complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle Signup and view all the answers

Which mirror has a reflective surface that is recessed inward?

Concave mirror Signup and view all the answers

What is the focal length of a lens or curved mirror?

The distance between the centre of the lens or mirror and its focus Signup and view all the answers

What is a virtual image?

The collection of focus points made by extensions of diverging or converging rays Signup and view all the answers