Pre - Test in Science 10

What is the law of reflection?

• The angle of incidence is equal to the angle of reflection.

• Light rays spread out after hitting a surface.

• Light bends when it enters a different medium.

• Light rays are absorbed by a rough surface.

In a plane mirror, which of the following is true about the incident ray, the reflected ray, and the normal?

• They lie in different planes.

• They lie in the same plane.

• They are parallel to each other.

• They intersect at the focal point.

Which of the following best describes the term "angle of incidence"?

• The angle between the incident ray and the reflected ray.

• The angle between the reflected ray and the normal line.

• The angle between the incident ray and the normal line.

• The angle between the mirror and the incident ray.

What happens to light when it hits a plane mirror?

• It is absorbed by the mirror.

• It is refracted into another medium.

• It passes through the mirror to the other side.

• It is reflected, forming an image.

This kind of spherical mirrors is also knows as converging mirror that reflects surface that is recessed inward.

• Convex

• Concave

• Coverage

• None of the above

This type of mirror is also known as the diverging mirror which has a reflective surface bulge towards the light sources.

• Covalent

• Concave

• Convex

• Coherent

What is the main reason convex mirrors are used in traffic intersections?

• They magnify vehicles for better visibility.

• They focus light at a single point.

• They absorb light to reduce glare.

• They allow drivers to see a larger area.

A convex mirror is often used in vehicles for which purpose?

• Magnifying objects.

• Creating a virtual and diminished image for a wider view.

• Providing a real and inverted image.

• Focusing sunlight for heating

What is the primary purpose of a concave mirror in a flashlight?

• To focus light into a narrow beam.

• To make the flashlight more compact.

• To scatter light in all directions.

• To absorb unnecessary light.

A solar power company needs to design a solar furnace that can focus sunlight to a single point to generate heat. Which mirror type is suitable for this purpose, and why?

• Convex mirror, because it disperses light in all directions.

• Concave mirror, because it concentrates light to a focal point.

• Plane mirror, because it reflects light without changing its direction.

• Convex mirror, because it provides a wider field of reflection