4th quarter exam (Gen Physics II)

Question 1

(common property of light) distance between identical points on consecutive waves

Answer 1

wavelength, λ

Question 2

(common property of light) distance between origin and crest (or trough)

Answer 2

Amplitude

Question 3

(common property of light) number of waves that pass a point per unit time

Answer 3

Frequency, v

Question 4

(common property of light) wavelength x frequency

Answer 4

Speed

Question 5

(common property of light) vibration of particles are parallel direction to the wave propagation

Answer 5

Longitudinal wave

Question 6

(common property of light) vibration of particles are perpendicular to the direction of the wave propagation

Answer 6

Transverse wave

Question 7

(wave property of light) wave strikes an object and bounces off

Answer 7

Reflection

Question 8

the angle of the incidence is equal to the angle of reflection. incident, reflected, normal ray to the surface all lie on the same plane

Answer 8

Law of Reflection

Question 9

(wave property of light) pointing towards and striking a surface

Answer 9

Incident ray

Question 10

(wave property of light) bounces back from surface of reflection

Answer 10

Reflected ray

Question 11

smooth surface

Answer 11

specular reflection

Question 12

rough surface

Answer 12

diffuse reflection

Question 13

transfer of energy carried by light waves to the particles of matter

Answer 13

Absorption

Question 14

the reflection of light particles

Answer 14

Scattering

Question 15

Bending of waves when passing on a medium

Answer 15

Refraction

Question 16

(Refraction) refracted ray bends towards normal

Answer 16

slower (more dense)

Question 17

(Refraction) refracted ray bends away from normal

Answer 17

faster (less dense)

Question 18

bending of waves around a barrier. It depends on wavelength and size of opening barrier

Answer 18

Diffraction

Question 19

Radiowaves

Answer 19

size: mountains, buildings
sources: sparks or alternating current cause a radio antennae to oscillate the atoms within it to the current frequency
uses: AM and FM radio, television, mobile phones, magnetic resonance imaging etc.

Question 20

Microwaves

Answer 20

sources: atoms or molecules are oscillated within klystron and magnetron tubes
uses: oven cooking, radar, aircraft navigation, terrain mapping, molecular research, long distance communication etc.

Question 21

Infrared

Answer 21

sources: oscillation of atoms or molecules due to the absorption of heat energy
uses: heating and drying, night vision cameras, satellite remote sensing, remote controls, molecular vibrational spectrum etc.

Question 22

Visible light

Answer 22

size scale: bacteria
sources: oscillation due to heat energy or electron transitions within an atom
uses: what the typical eye and film can see, visible light photography etc.

Question 23

Ultraviolet

Answer 23

size scale: viruses
sources: electron transitions within an atom
uses: photochemical and photoelectric effects, hardening casts in medicine etc.

Question 24

X-ray

Answer 24

size scale: atoms
sources: Electron transitions or braking
uses: Medical examination of bones, teeth, and vital organs; treatment for types of cancer; crystallography, astrophysics, etc.

Question 25

Gamma rays

Answer 25

size scale: nuclei
sources: nuclear transitions
uses: nuclear research, geophysics, mineral exploration, treatment for types of cancer, food irradiation etc.