Which of the following is correct? What is the formula for kinetic energy?

✅ D. Refraction

Refraction is the change in direction of light due to a change in speed between media. Read more

✅ C. Voltmeter

A voltmeter measures potential difference. Read more

✅ D. 9.8 m/s²

Near Earth's surface, gravitational acceleration is approximately 9.8 m/s². Read more

✅ D. Hertz

Frequency is measured in hertz. Read more

✅ B. Reflection

Reflection is the return of light from a surface. Read more

✅ C. Elastic potential energy

A stretched spring stores elastic potential energy. Read more

✅ B. Elastic potential energy

A stretched spring stores elastic potential energy. Read more

✅ A. Ammeter

An ammeter measures electric current. Read more