Ray Optics and Optical Instruments

Front

What is the wavelength range of light in the electromagnetic spectrum?

Back

About 400 nm to 750 nm.

Front

What is the speed of light in vacuum?

Back

Approximately 3 × 10^8 m/s.

Front

What is a ray of light?

Back

A straight line along which light travels.

Front

What are the phenomena of light discussed in this chapter?

Back

Reflection, refraction, and dispersion.

Front

What is the corpuscular model of light?

Back

It presumes that light energy is concentrated in tiny particles called corpuscles.

Front

What is the relationship between the focal length (f) and the radius of curvature (R) of a spherical mirror?

Back

f = R/2.

Front

What is the mirror equation?

Back

1/f = 1/v + 1/u.

Front

What is magnification (m) in the context of mirrors?

Back

m = h'/h = -v/u.

Front

What is the significance of the Cartesian sign convention in optics?

Back

It defines positive and negative distances based on the direction of incident light.

Front

What is total internal reflection?

Back

It occurs when light travels from a denser medium to a rarer medium and the angle of incidence exceeds the critical angle.