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Subjects
Science CBSE Homework Assignments
Class 8
Light
Protection of eyes and Braille system

1. Human eye

Task:

4.5 m.

Choose the correct option:

1. Which one of the following statements is correct regarding rods and cones in the human eye?

Rod cells are sensitive to dim light
Rod cells can sense colour
Rod cells are sensitive to bright light
Cone cells are sensitive to dim light

2. Braille system has

61 dot patterns
65 dot patterns
63 dot patterns
68 dot patterns

3. Which of the following cells can sense colour.

Neither rod nor cone
Cone
Rod
Both rod and cone

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