Question

Define principal focus of concave mirror.Where should we place a candle in front of a concave mirror to get an enlarged,erect image?

Answer 1

Explanation:

• The principal focus of a concave mirror is defined as the point when the ray of light that are parallel to the principal axis converge.
• It is denoted by letter F.
• When the object is placed between the focus and the pole of the concave mirror, the image is formed behind the mirror.
• The formed image is enlarged in size than the object.
• A virtual and erect image is formed.
• The attached figure shows the whole scenario.