Answer:
It becomes wider
Explanation:
Because The bigger the object the wave interacts with, the more spread there is in the interference pattern. Decreasing the size of the opening increases the spread in the pattern.
Answer:
(a) λ=77×10⁻⁶m
(b)Yes its enough to examine entire eye,
(c)λ=16.65μm.
Explanation:
The ultrasonic sound are used to detect problems in human body by using device consisting of transmitter and detector .
The speed of sound in human tissue is 1540m/s.
The wavelength of sound is 20MHz.
(a) let the velocity of sound in human tissue is v = 1540m/s.
v=fλ
λ= 
=
= 77×10⁻⁶m
λ=77×10⁻⁶m
(b) we can scan effectively upto the depth of about 500λ
500λ=500× (77×10⁻⁶)= 3.85cm
Yes its enough to examine entire eye,
(c) In air the velocity of sound is 331m/s.
λ= = 
= 16.65μm
λ=16.65μm.
Answer:
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.
Wavelength can be defined as the distance from one peak to the next peak. Also, this distance is equal to the distance from one trough of a wave to another.
Mathematically, the speed of a wave is given by the formula;
V = fλ
Where;
V is the speed of the wave.
f is the frequency of the wave.
λ is the wavelength of the wave.
The speed of a wave (wave speed) is directly proportional to the frequency of a wave.
This ultimately implies that, an increase in the speed of a wave would cause an increase in the frequency of a wave and vice-versa.
