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What is the primary reason why we can see an object reflected in a mirror?
What is the primary reason why we can see an object reflected in a mirror?
- The law of reflection is obeyed (correct)
- The angle of incidence is always greater than the angle of reflection
- The incident ray is always perpendicular to the reflected ray
- The normal line is parallel to the reflector
What is the purpose of the normal line in reflection?
What is the purpose of the normal line in reflection?
- To draw a perpendicular to the reflector (correct)
- To indicate the direction of the incident ray
- To measure the angle of reflection
- To measure the angle of incidence
What is the main difference between how smooth and rough surfaces reflect light?
What is the main difference between how smooth and rough surfaces reflect light?
- Rough surfaces reflect more rays of light than smooth surfaces
- Smooth surfaces reflect all rays of light at the same angle, while rough surfaces reflect them at different angles (correct)
- Smooth surfaces reflect more rays of light than rough surfaces
- Rough surfaces reflect all rays of light at the same angle, while smooth surfaces scatter them
What is the primary function of a periscope?
What is the primary function of a periscope?
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What is the purpose of the mirrors in a simple periscope?
What is the purpose of the mirrors in a simple periscope?
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What was the primary use of periscopes in the First World War?
What was the primary use of periscopes in the First World War?
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