mirrors and lenses

A plane mirror is a flat, reflective surface that forms images by reflecting light. The type of image formed by a plane mirror has distinct characteristics. The image produced by a plane mirror is always virtual, meaning it cannot be projected onto a screen, and it appears to be behind the mirror. Additionally, the image is upright (not flipped) and has the same size as the object being reflected. These properties make the plane mirror a commonly used tool in everyday applications, such as in bathroom mirrors and optical instruments. Which of the following statements best describes the image produced by a plane mirror?

• The image is real, upright, and reduced in size.
• The image is virtual, upright, and the same size as the object
• The image is real, inverted, and the same size as the object.
• The image is virtual, inverted, and reduced in size.

You are observing the image formed by a concave mirror. The object is placed between the focal point and the mirror. How would you describe the image?

• Real, inverted, and smaller than the object
• Virtual, upright, and larger than the object.
• Virtual, inverted, and smaller than the object.
• Real, upright, and the same size as the object.

If an object is placed at the center of curvature of a concave mirror, what is the nature of the image formed?

• Real, inverted, and the same size as the object.
• Virtual, upright, and the same size as the object.
• Real, upright, and smaller than the object.
• Virtual, inverted, and larger than the object.

A student looks at an object through a convex lens. The object is placed beyond twice the focal length. What can the student expect to see?

• An image that is larger and upright.
• An image that is smaller and inverted.
• An image that is the same size and inverted.
• An image that is larger and inverted.

In a convex mirror, if an object is moved closer to the mirror, how does the image change?

• The image becomes larger and more distant.
• The image becomes smaller and closer to the mirror.
• The image remains the same size but moves farther away.
• The image becomes smaller and moves closer to the mirror.

If you place an object at the focal point of a concave mirror, what happens to the image?

• The image is formed at infinity.
• The image is formed at the focal point.
• The image is real and inverted.
• No image is formed.

A concave mirror is a type of curved mirror where the reflective surface is on the inside of the curve. This type of mirror can produce different types of images depending on the position of the object in relation to the mirror's focal point. If the object is placed beyond the center of curvature, the image will be real and inverted. However, if the object is placed between the focal point and the mirror, the concave mirror will produce a virtual, upright, and magnified image. This is why concave mirrors are often used in applications such as makeup mirrors or telescopes, where magnification is needed. In which situation would a concave mirror produce a virtual, upright, and magnified image?

• When the object is placed beyond the center of curvature.
• When the object is placed at the focal point.
• When the object is placed between the focal point and the mirror.
• When the object is placed at the center of curvature.

A student stands 2 meters away from a plane mirror. Which of the following best describes the image of the student as seen in the mirror?

• The image is 2 meters behind the mirror and upright.
• The image is 2 meters in front of the mirror and inverted.
• The image is 1 meter behind the mirror and upright.
• The image is 1 meter in front of the mirror and inverted.

A convex mirror is often used as a rearview mirror in cars. Which of the following is the primary reason for using a convex mirror in this case?

• It forms a magnified image of the vehicles behind.
• It provides a wider field of view than a plane mirror.
• It forms a real image that helps the driver better estimate distance.
• It forms an inverted image that reduces the blind spots.

A magnifying glass uses a convex lens to enlarge objects. Where must the object be placed for this to happen?

• At the focal point of the lens.
• Between the focal point and the lens.
• Beyond the focal point, but less than twice the focal distance.
• At twice the focal length of the lens.