Polytechnic Physics 2

Question 1

What is the formula for gravitational potential energy?

Accepted Answer

PE = mgh

Answer

PE = ½mv²

Answer

PE = mc²

Answer

PE = Fd

Question 2

What is absolute zero on the Kelvin scale?

Accepted Answer

0 K

Answer

-273.15 K

Answer

273.15 K

Answer

100 K

Question 3

What phenomenon describes the bending of light as it passes through a lens?

Accepted Answer

Refraction

Answer

Reflection

Answer

Diffraction

Answer

Interference

Question 4

What is the formula for work done by a constant force?

Accepted Answer

W = F × d × cos(θ)

Answer

W = F × d

Answer

W = F / d

Answer

W = F + d

Question 5

What does the photoelectric effect demonstrate?

Accepted Answer

Light behaves as particles (photons)

Answer

Light travels in straight lines

Answer

Light has no mass

Answer

Light is a mechanical wave

Question 6

What is electric potential difference also known as?

Accepted Answer

Voltage

Answer

Current

Answer

Resistance

Answer

Power