10_Phys Summative Unit 3 Trim 2

When all incident light has a refracted angle of 90º

When an incident light has a refracted angle of 90º in a lighter medium

When an incident light has a refracted angle of 90º in a denser medium

When sound makes 90º

when only the sine of the incident angle is proportional (constant)

when the sine of first angle is equal to the refractive index of the second

when the sine of second angle is equal to the refractive index of the second

when the sines of the incident and refractive angles are proportional (constant)

Boundary line

Normal Line

refractive angle line

Incident angle line

speed of electromagnetic wave in air.

speed of electromagnetic wave in a light medium.

speed of electromagnetic wave in vacuum.

all the objects are non-luminous

non-luminous objects reflect light and gets to our eyes.

objects capture their own light and gets to our eyes.

light is hitting on them without bouncing off.

A full range of all electromagnetic waves and their limitations

A full range of all electromagnetic waves and their effects/applications

A full range of all electromagnetic waves and their origins

it has high frequency and is a transverse wave

it has high wavelength and is a longitudinal wave

it has high frequency and is a longitudinal wave

it has high wavelength and is a transverse wave

higher frequency than visible light and used in remote controls for appliances.

lower frequency than visible light and not used in remote controls for appliances.

higher frequency than visible light and not used in remote controls for appliances.

lower frequency than visible light and used in remote controls for appliances.

Long, thin strands of glasses carrying electrical signals in the form of pulses light emitted by an LED (light-emitting diode)

Long, thin strands of glasses carrying digital signals in the form of pulses light emitted by an LED (light-emitting diode)

Carry the energy backwards and upwards related to the wave propagation

Carry the energy backwards and forwards related to the wave propagation

Carry the energy perpendicular to the wave propagation

one is waves per unit time and the other is waves in one second.

one is waves per unit time and the other is waves in one meter.

one is waves per unit time and the other is 1 wave per unit time

one is waves per unit time and the other is 1 wave per distance time

When incident angle is reflected completely

just when any wave slows down

When incident angle slows down

just when any wave slows down and changes its direction

nature of longitudinal waves

nature of ocean waves

nature of sound waves

Pressure, temperature of the air and type of material (medium)

temperature of air, type of material (medium), and altitude.

temperature of air, altitude, pressure of the air.

Pressure of the air and type of material (medium).

reflection of sounds with frequency higher than 20,000 Hz

Refraction of the sound

reflection of sounds with frequency lower than 20,000 Hz

Diffraction of the sound

Bending the light inside a denser medium.

Bending the reflected light inside a denser medium

Bending the incident light

Bending the refracted light

When an incident angle in a denser medium is greater than its critical angle.

When an incident angle in a lighter medium is greater than its critical angle.

When an incident angle in a lighter medium is greater than its refractive angle.

When an incident angle in a denser medium is greater than its refractive angle.

energized particles that only make the gamma rays.

energized particles that only make the visible light waves.

energized particles that make the electromagnetic waves.

energized particles that make the longitudinal waves.

maximum displacement of wave from equilibrium position

maximum distance from crest to trough

maximum ditance of wave from equilibrium position

maximum displacement from crest to trough

When waves bend around the sides of an obstacles.

When waves slow down in a denser medium.

When waves spread out after passing through a gap.

When waves bend around the sides of an obstacles, or spread out after passing through a gap.

their wavelength is larger.

their wavelength is smaller.

have greater distance between crest to crest.

have greater time between crest to crest.

we increase their period

we increase their amplitude

we increase their frequency

we increase their wavelength

in a smaller gap, there is a lot of diffraction.

In a smaller gap, there is no much diffraction

in a samller gap, the wavelength decreases

in a smaller gap, the wavelength increases

by refraction of sound

by reflection of sound

by diffraction of sound

reflection of sound

refraction of sound

diffraction of sound

2.0 cm

4.0 cm

4.0 m

2.0 m

Amplitude

Wavelength

Period

Distance from crest to trough

its wavelength is 2 cm

its period is 2 m

Its wavelength is 2 m

its period is 2 cm

A

D

B

C

B

D

A

C