Chapter 12, Problem 46R

To determine

To Explain: The speed of light is greater in air than in glass.

Answer to Problem 46R

Due to the smooth surface mirror reflected more light than white wall.

Explanation of Solution

Introduction:

The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 meters per second.

A mirror reflected more light than a white wall. Because mirror surface is more smooth than white wall. When a light ray is fall on a white wall less amount of light are reflected and lighter are absorbed but when a light ray is fall on a glass maximum light are reflected and very less amount of light are absorbed.

Conclusion:

Hence, due to the smooth surface mirror reflected more light than white wall.