Physics term three final

The focal length of a spherical mirror equals________

• Twice of its radius of curvature
• Equal to the diameter of the mirror
• Dependent on the material of the mirror
• Half the radius of curvature

When a real image is formed______

• by the interference of light rays
• light rays converge at the image

• by the reflection of light rays
• by the dispersion of light rays

if an object is between a concave mirror and its focal point, the image will be________

• virtual and larger than the object

• real, inverted

• virtual, inverted

• real, upright, and magnified

Which surface would produce a specular reflection of light?

• Transparent surface
• a telescope mirror

• Yasmen

• kaka

What determines whether a surface produces a specular reflection or a diffuse reflection?

• how smooth the surface is

• Color of the wall

• Temperature
• Material composition

Which statement is true about the image produced by a plane mirror?

• It appears to be located on the same side of the mirror as the object.

• It appears ot be larger than the object.

• It appears to be inverted relative to the object.

• It appears to have reversed left and right, relative to the object.

A ____ indicates that an image produced by a concave mirror is upright.

• positive value for hi

• negative value for hi

• positive value for xi

• negative value for xi

A ____ indicates that an image produced by a concave mirror is virtual

• positive value for hi

• negative value for hi

• positive value for xi

• negative value for xi

If an object is placed at the focal point of a concave mirror, where will the image be?

• The image will be at the center of curvature
• At infinity

• The focal point

• At the center of the mirror

Why do parabolic mirrors not suffer from spherical aberration?

• Al parallel rays focus on kaka.

• Parabolic mirrors use a secondary mirror for correction.

• Parabolic mirrors have a virtual focus point.

• Al parallel rays are reflected through a single point.