What is the SI unit of pressure — select the correct answer.

✅ B. Elastic potential energy

A stretched spring stores elastic potential energy. Read more

✅ A. Refraction

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

✅ D. Mass × velocity

Linear momentum is p = mv. Read more

✅ D. Mass × velocity

Linear momentum is p = mv. Read more

✅ A. Refraction

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

✅ A. Newton's third law

Newton's third law describes action and reaction forces. Read more

✅ D. Ammeter

An ammeter measures electric current. Read more

✅ B. It increases

For typical metals, electrical resistance increases as temperature rises. Read more