Chapter U5.116, Problem 5E

Interpretation Introduction

Interpretation:

The change in the UV sensitive paper needs to be explained when it is placed in a room with a dim red light.

Concept introduction:

The sun sensitive paper is coated with chemicals which sensitive to light. They react with light falling on them from sun.

UV sensitive paper is also known as light sensitive or photo sensitive paper. It is made by coating with water soluble bluish-green compound which is commonly known as Berlin-Green.

Answer to Problem 5E

No change.

Explanation of Solution

UV sensitive paper is also known as light sensitive or photo sensitive paper because it responds to light which comes from sun. The change in color takes place in the present of UV rays that comes from sun light. Since, in the room there is only red light and no sunlight thus, there will be no change in the color takes place.

Conclusion

No change in the color of the UV sensitive paper takes place due to absence of sunlight.