Pulse type of modulation is applied to radio-controlled toys, therefore the correct answer is option D.
<h3>What is the frequency?</h3>
It can be defined as the number of cycles completed per second. It is represented in hertz and inversely proportional to the wavelength.
Toys controlled by remote control operate by emitting infrared radiation. These infrared rays have a frequency of 34–48 kilo Hertz.
Different types of modulations, such as frequency and amplitude modulation for transmitting and receiving video and music, are employed for other reasons.
Thus, the Pulse-type of modulation is applied to radio-controlled toys, therefore the correct answer is option D.
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Answer:
The position of the first dark spot on the positive side of the central maximum is 1.26 mm.
Explanation:
Given that,
Wavelength of light is 633 nm.
Slit width, d = 0.5 mm
The diffraction pattern forms on a screen 1 m away from the slit. We need to find the position of the first dark spot on the positive side of the central maximum.
For destructive interference :
Y is the distance of the minima from central maximum
Here, n = 1
So, the position of the first dark spot on the positive side of the central maximum is 1.26 mm.
Answer:
Radius = 9.0216 cm
Explanation:
Given that:
The critical mass of neptunium-237 = 60 kg
Also, 1 kg = 1000 g
So mass = 60000 g
Density = 19.5 g/cm³
Volume = ?
So, volume:
The volume of the material = 3076.92308 cm³
The expression for the volume of the sphere is:
![{(radius)}=\sqrt[3]{\frac{64615.38468}{88}}](https://tex.z-dn.net/?f=%7B%28radius%29%7D%3D%5Csqrt%5B3%5D%7B%5Cfrac%7B64615.38468%7D%7B88%7D%7D)
<u>Radius = 9.0216 cm</u>
Answer: Energy is released by the electron in the form of light
Explanation:
Let's start by explaining that each atom in its natural state has a specific structure of its energy levels. Where <u>the lowest energy level is called the </u><u>ground state</u><u>. </u>
<u>
</u>
So, when an atom is in its ground state, its electrons fill the lower energy orbitals completely before they begin to occupy higher energy orbitals.
Then, when an atom is excited, it means that it has left its ground state (in which each electron occupies its place in its orbit, around the nucleus), when this happens some electron jumps out of the orbit it occupied in its fundamental state to an outer orbit, further away from the nucleus <u>and then return to the ground state, emitting in the form of light the energy received.</u>
To understand it better:
An excited electron is an unstable electron, and when passing from one orbit to another, it produces light of a specific wavelength (color) that depends on the amount of energy the electron loses.
