EMR

Question 1

Weakest to highest radiation.

Answer 1

Radio, microwave, infrared, visible, ultraviolet, xrays, gamma.

Question 2

Types of fields created to due moving charges.

Answer 2

Gravitational, electrical, magnetic.

Question 3

Highest to Lowest energy of the rainbow

Answer 3

Violet, indigo, blue, green, yellow, orange, red

Question 4

EMR is produced to what?

Answer 4

Accelerating charged particles.

Question 5

Why do your legs look bent in water?

Answer 5

Different speeds cause the light to bend.

Question 6

What happens to the frequency of a wave when it enters a new medium?

Answer 6

Does not change.

Question 7

What is Total Internal Reflection?

Answer 7

Light not escaping from a substance

Question 8

What is white light?

Answer 8

Composed of all colours of light

Question 9

Why does the dispersion of white light show a predictable pattern?

Answer 9

Longer wavelengths (red) refract less than shorter wavelengths (violet).

Question 10

What do all concave lenses have and produce?

Answer 10

Negative focal length. Smaller, upright, and virtual images.

Question 11

What is the difference between lenses and mirrors?

Answer 11

Complete opposite of the ray direction when drawn. The concave lens is diverging, concave mirror is converging, and the opposite for convex.

Question 12

What is x?

Answer 12

Node/antinode separation.

Question 13

What if there is a dark fringe?

Answer 13

Must take away 1/2 from n.

Question 14

What is lines/cm for?

Answer 14

D/slit separation

Question 15

Why is the sky blue?

Answer 15

Due to the polarization of air molecules.

Question 16

What are blackbodies?

Answer 16

Objects that absorb all light.

Question 17

What is ultraviolet catastrophe?

Answer 17

Intensity just gets higher which means that blackbodies can create an infinite amount of ultraviolet radiation.

Question 18

What is the photoelectric effect?

Answer 18

Electron being emitted from an object due to light.

Question 19

What is threshold frequency?

Answer 19

The required work needed for the electrons to be emitted from an object.

Question 20

What is the Compton effect?

Answer 20

Electrons are scattered due to photons which means that light also behaves like a particle.

Question 21

What does the weird momentum (P) formula equal to?

Answer 21

P= square root of (2 x q x v x m). Which can be used to find wavelength.