Quiz on Image Formation by Lenses

When an object is placed at infinity in front of a convex lens, the image formed is:

• Real, inverted, and at the focus

• Virtual, erect, and at the focus

• Real, inverted, and at the center of curvature

• Virtual, erect, and at infinity

For an object placed at the focal point of a convex lens, the image formed is:

• Real and inverted at the focus

• Real and inverted at infinity

• Virtual and erect at the focus

• Virtual and erect at infinity

What is the nature of the image formed by a concave lens for any position of the object?

• Real and inverted

• Virtual and erect

• Real and erect

• Virtual and inverted

If an object is placed at twice the focal length from a convex lens, the image formed is:

• At infinity

• At the center of curvature, real and inverted

• At the focal point, virtual and erect

• Between the focal point and the lens, real and inverted

Which type of lens forms a diminished and virtual image, regardless of the position of the object?

• Convex lens

• Concave lens

• Plane lens

• Bifocal lens

For an object placed between the focal point and the lens in a convex lens, the image formed is:

• Real and diminished

• Real and magnified

• Virtual and magnified

• Virtual and diminished

A convex lens forms a real, inverted, and magnified image when the object is placed:

• At infinity

• At the center of curvature

• Between the center of curvature and focus

• Between the lens and focus

What is the nature of the image formed by a concave lens when the object is placed at infinity?

• Real, inverted, and at infinity

• Virtual, erect, and highly diminished

• Real, erect, and magnified

• Virtual, inverted, and highly diminished

When an object is placed at the focus of a concave lens, the image formed is:

• Real and inverted

• Virtual and erect

• Virtual and diminished

• Real and magnified

For an object placed beyond the center of curvature in front of a convex lens, the image formed is:

• Real, inverted, and diminished

• Real, inverted, and magnified

• Virtual, erect, and magnified

• Virtual, erect, and diminished