Phys Paper 2 Flashcards
1
Q
What is an induced magnet?
A
A material that becomes magnetic when placed in a magnetic field.
2
Q
What is the name for reflection from a smooth surface?
A
Specular reflection
3
Q
What is the resolution of a measuring device?
A
The smallest difference that can be resolved with that device.
4
Q
Explain, in terms of wavefronts, why light changes direction when moving from air to glass.
A
The right hand side of the wavefront reaches the boundary first and so slows down first. This causes the wavefront to turn and so the light changes direction.
