Concave Mirrors Optics Flashcard

Front

What is the mirror equation for a concave mirror?

Back

The mirror equation is \( \frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i} \), where \( f \) is the focal length, \( d_o \) is the object distance, and \( d_i \) is the image distance.

Front

If the object distance (d_o) is 30 cm and the image distance (d_i) is 10 cm in a concave mirror, what is the focal length?

Back

The focal length \( f \) can be calculated using the mirror equation: \( \frac{1}{f} = \frac{1}{30} + \frac{1}{10} \) which gives \( f = 7.5 \) cm.

Front

If an object is placed beyond the center of curvature of a concave mirror, where will the image be formed?

Back

The image will be formed between the focal point and the center of curvature.

Front

For a concave mirror, if an object is placed at the focal point, where is the image formed?

Back

The image is formed at infinity.

Front

What happens to the image distance (d_i) as the object distance (d_o) approaches the focal length from the outside in a concave mirror?

Back

As the object distance approaches the focal length, the image distance approaches infinity.

Front

Define focal length in the context of concave mirrors.

Back

Focal length is the distance from the mirror's surface to the focal point, where parallel rays of light converge.

Front

What is the significance of the center of curvature in concave mirrors?

Back

The center of curvature is the point where the radius of curvature intersects the mirror's surface; it is twice the focal length.

Front

Explain the relationship between object distance, image distance, and focal length in concave mirrors.

Back

The relationship is defined by the mirror equation: \( \frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i} \).

Front

What type of image is formed when the object is placed between the focal point and the mirror?

Back

The image formed is virtual, upright, and larger than the object.

Front

What is a real image in the context of concave mirrors?

Back

A real image is formed when light rays converge and can be projected on a screen; it is inverted.