Step up transformer is a device which is used to step up the voltage which is input with some value.
This is based upon the principle of mutual inductance and in this the voltage input and voltage output is different because of number of turns.
Here if ideal transformer is given then power input and power output of the transformer must be same as there is no power loss in ideal transformer.
So we can write
here
= 73.37 A
= 4623 V
= 105033 A
now using above equation we will have
solving above we will have
Because you see yourself the opposite way in a mirror. So yes your “seeing” yourself but not how everyone else sees you.
The phenomenon which is responsible for this effect is called diffraction.
Diffraction is the ability of a wave to propagate when it meets an obstacle or a slit. When the wave encounters the obstacle or the slit, it 'bends' around it and it continues propagate beyond it. A classical example of this phenomenon is when a sound wave propagates through a wall where there is a small aperture (as in the example of this problem)
Answer:
Option B
Explanation:
As we know phase difference is equal to
----Eq (1)
where
is the physical difference between two points = 0.025 m
is equal to 
Substituting the given values in above equation, we get -
=
Hence, option B is correct
You said that the frequency is 440 Hz.
Period = 1/frequency = 1/440 of a second .
