Summative-Science 10-Q2

What is the speed of light in a vacuum?

• 3 × 10⁵ m/s

• 3 × 10⁶ m/s

• 3 × 10⁷ m/s

• 3 × 10⁸ m/s

What are the three basic parts of an electric generator?

• battery, armature, and DC power supply 

• stator, rotor, and commutator

• commutator, stator, and motor shaft

• armature, brushes, and stator

Which of the following principles explains how an electric motor works?

• electromagnetism

• magnetism     

•  electrolysis    

• magnetic force

What is the mathematical relationship between frequency and wavelength?

• Directly Proportional

• Inversely Proportional

• Both

• Nothing

What type of mirror do dentists usually use to see clearly the images of our teeth?

• Plane Mirror

• Convex Mirror

• Concave Mirror

• Mirror

How are electricity and magnetism related?

• When an electric current pass through a wire there is an electrical field.

• They are not related.

• When an electric current pass through a wire there is spark.

• When an electric current pass through a wire a magnetic field is formed

When an object is placed between F and the mirror of a concave mirror, the image formed is:

• Virtual and larger

• Real and smaller

• Virtual and smaller

• Real and larger

What type of image does a convex mirror always form, regardless of object position?

• Virtual and upright

• Real and inverted

• Virtual and inverted

• Real and upright

What kind of image is produced by a plane mirror?

• Virtual, upright

• Virtual, inverted

• Real, inverted

• Real, upright

In a ray diagram, where do all rays parallel to the principal axis converge in a concave mirror?

• At the "C"

• Beyond the "C"

• At the "F"

• Between "C" and "F"