Lens & Mirrors

What type of wave behavior is pictured above?

• Refraction
• Reflection
• Absorption
• Diffraction

Tags

NGSS.MS-PS4-2

What can be determined about the location of the object?

• s_o = f

• s_o > f

• s_o < f

• s_o is undefined

Which type of lens is thick in the middle, is used to correct farsightedness, and refracts the light causing the image to be pulled in forward to the retina?

• convex lens

• concave lens

Which type of lens is thin in the middle, is used to correct nearsightedness, and spreads out the light which pushes the image back to the retina?

• convex lens

• concave lens

The law of reflection states that when light rays strike a plane mirror they are

• reflected at a smaller angle at which they arrived

• reflected at the same angle at which they arrived

• reflected at a larger angle at which they arrived

Tags

NGSS.MS-PS4-2

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.

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.