WAVES

Question 1

wave

Answer 1

a periodic disturbance travelling though space. characterized by a vibrating medium

Question 2

progressive wave

Answer 2

a wave that carries energy from one place to another

Question 3

displacement

Answer 3

the distance of a point on the wave from its undisturbed position or equilibrium position

Question 4

amplitude

Answer 4

the maximum displacement of a wave

Question 5

wavelength

Answer 5

the distance between two adjacent points on a wave oscillating in step with each other

Question 6

period

Answer 6

the time taken for one complete oscillation of a point in a wave

Question 7

frequency

Answer 7

the number of oscillation per unit time of a point in a wave

Question 8

longitudinal waves

Answer 8

a wave in which the particles of the medium oscillate along the direction in which the wave travels

Question 9

transverse wave

Answer 9

a wave in which the particles of the medium oscillate at right angles to the direction in which the wave travels

Question 10

compression

Answer 10

the point in a sound wave at which the air pressure is at maximum

Question 11

rarefaction

Answer 11

a region in a sound wave where the air pressure is less than its mean value

Question 12

phase difference

Answer 12

the fraction of a cycle between two oscillating particles, expressed in either degrees or radians

Question 13

intensity

Answer 13

intensity is the rate of energy transmitted per unit area at right angles to the wave velocity

Question 14

doppler effect formula

Answer 14

https://www.savemyexams.co.uk/as/physics/cie/19/revision-notes/8-waves/8-4-doppler-effect/8-4-1-doppler-effect/

Question 15

electromagnetic spectrum

Answer 15

the family of waves that travel trhough a vacuum at a speed of 3.00 × 10^8 ms^-1

Question 16

magnetic field

Answer 16

a force field in which a magnet. a wire carrying a current. or a moving charge experiences a force

Question 17

electromagnetic wave

Answer 17

a transverse wave travelling trough space as vibrations of electric and magnetic fields

Question 18

radio waves

Answer 18

> 10^6 to 10^-1

Question 19

microwaves

Answer 19

10^-1 to 10^-3

Question 20

infrared

Answer 20

10^-3 to 7 x 10^-7

Question 21

visible

Answer 21

7 x 10^-7 to 4 x 10^-7 (red to violet)

Question 22

ultraviolet

Answer 22

4 x 10^-7 to 10^-8

Question 23

X- rays

Answer 23

10^-8 to 10^-13

Question 24

y - rays

Answer 24

10^-10 to 10^-16

Question 25

electric field

Answer 25

a force field in which a n electric charged particle experiences a force

Question 26

plane polarised

Answer 26

describes a transverse wave with oscillation in just one plane. Only transverse waves can be polarised

Question 27

mulus law

Answer 27

https://www.savemyexams.co.uk/as/physics/cie/22/revision-notes/7-waves/7-2-transverse-waves-em-spectrum–polarisation/7-2-2-polarisation/