Light: Mirrors and Lenses Science - Light: Mirrors and Lenses

In the Figure, note that O stands for object, M for mirror, and I for image.

Which of the following statements is true?

• A
  Figure (a) indicates a plane mirror, and Figure (b) indicates a concave mirror.
• ✓
  Figure (a) indicates a convex mirror and Figure (b) indicates a concave mirror.
• C
  Figure (a) indicates a concave mirror and Figure (b) indicates a convex mirror.
• D
  Figure (a) indicates a plane mirror, and Figure (b) indicates a convex mirror.

Answer: B.

• ✓
  Both Assertion and Reason are correct, and Reason is the correct explanation for Assertion.
• B
  Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion.
• C
  Assertion is correct, but Reason is incorrect.
• D
  Both Assertion and Reason are incorrect.

Answer: A.

In a museum, a woman walks towards a large convex mirror (Figure). She will see that:

• ✓
  Her erect image keeps decreasing in size.
• B
  her inverted image keeps decreasing in size.
• C
  her inverted image keeps increasing in size, and eventually it becomes erect and magnified.
• D
  Her erect image keeps increasing in size.

Answer: A.

A light ray is incident on a mirror and gets reflected by it (Figure). The angle made by the incident ray with the normal to the mirror is 40°. What is the angle made by the reflected ray with the mirror?

• A
  40°
• ✓
  50°
• C
  45°
• D
  60°

Answer: B.

• A
  One Surface
• B
  Two Surfaces
• C
  No Surface
• D
  Multiple Surface