Lens and Mirrors Quiz

When looking through a concave lens, if the object is beyond the 2F, what characteristics will the image have?

• between the lens and the focal point, virtual, upright, and smaller than the object.

• between the lens and the focal point, virtual, upright, and larger than the object.

• behind the lens, real, inverted, and smaller than the object.

• behind the lens, real, inverted, and larger than the object.

A 12.5 cm object is 28 cm from a concave lens, which has a focal length of −13 cm.  What is the distance of the image from the lens?

• -9 cm

• 9 cm

• -0.1 cm

• 0.1 cm

A 12.5 cm object is 28 cm from a concave lens, which has a focal length of -13 cm.  Its image is -8.9 cm from the concave lens.  What is the height of the image?

• 4 cm

• -4 cm

• -39 cm

• 39 cm

When looking through a convex lens, if the object is beyond the 2F, what characteristics will the image have?

• between the lens and the focal point, virtual, upright, and smaller than the object.

• between the lens and the focal point, virtual, upright, and larger than the object.

• behind the lens, real, inverted, and smaller than the object.

• behind the lens, real, inverted, and larger than the object.

A 4 cm object is 10 cm from a convex lens, which has a focal length of 4 cm. What is the distance of the image from the lens?

• 7 cm

• -7 cm

• 0.15 cm

• -0.15 cm

A 3 cm object is 10 cm from a convex lens, which has a focal length of 4 cm. The image is 7 cm from the lens.  What is the height of the image? 

• -2 cm

• 2 cm

• 4.2 cm

• -4.2 cm

When an object is in front of a concave mirror, what characteristics will the image have?

• in front of the mirror, virtual, inverted, and smaller than the object.

• in front of the mirror, real, inverted, and larger than the object.

• behind the mirror, virtual, upright, and smaller than the object.

• behind the mirror, real, upright, and larger than the object.

A 6.0 cm object is 30.0 cm from a concave mirror that has a focal length of 11 cm.  What is the distance of the image from the mirror?

• 17.36 cm

• -17.36 cm

• -0.0578 cm

• 0.0578 cm

A 6.0 cm object is 30.0 cm from a concave mirror that has a focal length of 11.0 cm. Its image is 17.0 cm in front of the mirror.  What is the height of the image from the mirror? 

• -3.4 cm

• 3.4 cm

• 10.5 cm

• -10.5 cm

When an object is in front of a convex mirror, what characteristics will the image have?

• in front of the mirror, virtual, inverted, and smaller than the object.

• in front of the mirror, real, inverted, and larger than the object.

• behind the mirror, virtual, upright, and smaller than the object.

• behind the mirror, real, upright, and larger than the object.