Question

please answer the following attachment ​

Answer 1

Answer:

3. Ans- Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. ... Translucent objects allow some light to travel through them. Materials like frosted glass and some plastics are called translucent.

4. Ans- The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light. Focuses light rays onto the retina.

Explanation:

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