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Activity 2 Science

The document compares the angle of incidence and angle of reflection when light reflects off a plane mirror. It instructs students to use a laser pointer and protractor to measure the angles of incidence and reflection in trials ranging from 10 to 50 degrees. The results show the angles of incidence and reflection are always equal, demonstrating one of the laws of reflection.

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Sofie Catahan
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466 views1 page

Activity 2 Science

The document compares the angle of incidence and angle of reflection when light reflects off a plane mirror. It instructs students to use a laser pointer and protractor to measure the angles of incidence and reflection in trials ranging from 10 to 50 degrees. The results show the angles of incidence and reflection are always equal, demonstrating one of the laws of reflection.

Uploaded by

Sofie Catahan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Activity

Angle of Incidence vs. Angle of Reflection

Objectives:
 Compare the angle of reflection and the angle of incidence.
 State one of the laws of reflection.

Materials:
 1 plane mirror
 1 low–frequency laser/laser pen/laser pointer
 1 paper protractor (see Appendix A)

Procedure:
Table 3.
Angle of Incidence Angle of Reflection
Trial 1 Trial 2 Trial 3 Ave.
10o
10o 10 o
10o 10o
20o 20o 20o 20o 20o
30o 30o 30o 30o 30o
40o 40o 40o 40o 40o
50o 50o 50o 50o 50o

Q3. How does the angle of incidence compare with the angle of reflection?

- The angle of the incidence is equal to the angle of reflection.

Q4. A periscope is an instrument for observation over, around, or through an


obstacle. Explain how light travels in a periscope. Diagram the light rays as these
pass through the periscope.
- When light enters the periscope, it is reflected by a mirror at an equal angle
before being reflected once more by another mirror at an equal angle.

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