Alice quizz

What type of mirror is used in a shaving mirror?

• Plane mirror

• Convex mirror

• Concave mirror

• Spherical mirror

What is the SI unit of electric current?

• Volt

• Ampere

• Watt

• Ohm

Which device converts electrical energy into mechanical energy?

• Generator

• Motor

• Transformer

• Transistor

Which of the following is an example of a renewable source of energy?

• Coal

• Natural gas

• Solar power

• Nuclear power

What happens to the pitch of a sound when the frequency of the sound wave decreases?

• Pitch increases

• Pitch decreases

• Pitch remains the same

• Pitch cannot be determined without more information

State Newton's 3rd law.