Question

• State if the following statements are true or false:
13. The refraction of ray occur at any angle on the common surface of two medium.
14. Mendel studied many opposite traits in gram plants. ​

Answer 1

Answer:

THE ANSWER IS A

Explanation:

Answer is A.

When the angle of incidence of the light ray is greater than the critical angle then no refraction takes place. Instead, all the light is reflected back into the denser material in this case the glass. This is called total internal reflection.

Hence, the statement is true.

Answer 2

Answer:

• The refraction of ray occur at any angle on the common surface of two medium. TRUE
• Mendel studied many opposite traits in gram plants. FALSE

Explanation:

When a light ray crosses a boundary between two media, the amount of its bending is measured by the difference between the two indices of refraction.

The ray is bent towards the normal when light passes through a denser medium.

When a ray of light emerges from a denser medium, the ray is bent away from the normal.

Mendel studied many traits in pea plants.

He crossed pea plants with opposite traits and studied them.