What media should be used instead of radio waves for constant video conferencing facility?

 Yes ! It is possible instead of radio waves, constant video conferencing facility is possible.

with the help of FOC (Fiber Optic Cable).

Today, fiber optic technology widely used to transmit high quality videos. Fiber optic cables are made up of thin optical fiber strands.

Fiber transmit data from one location to another location in form of light waves.

Optical fiber uses light signal for transmitting data.

Light wave is transmitted through the optical fiber by a principle called total internal reflection.

Which FM Waves are available in pimpalner Maharashtra?

 Analog FM waves is available in pimpalner maharashtra.

FROM 29 STATIONS ON PAN INDIA BASIS where Air Broadcasting in Digital standard –i) AHMEDABAD,

 AJMER,

 BARMER,

 BENGALURU,

 BIKANER, 

CHENNAI,

 DELHI,

 DHARWAD, 

DIBRUGARH, 

GUWAHATI,

 ITANAGAR, 

JABALPUR, 

JALLANDHAR, 

JAMMU, 

KOLKATA, 

LUCKNOW,

MUMBAI, 

PANAJI, 

PASSIGHAT,

 PATNA, 

PUNE, 

RAJKOT, 

RANCHI,

 SILIGURI, 

SURATGARH, 

TWANG, 

VARANSI, 

VIJAYVADA AND TIRUCHIRAPALLI.

20 watt LED tube light AC or DC

 It is AC LED tube light bulb.

Because in AC LED tube light, there is small circuit is fitted inside LED tube light. 

As we know that all bulb and tube light is glow, when it gets directs current its means DC current or DC voltage.

But in our 230V AC (Alternate Current) is supplied from power house.

So therefore when AC current or voltage come in LED or tube light its rectifies into DC current or voltage with the help of rectifier circuit which present in the LED.

   So simply when AC is input Rectifier circuits presents inside LED bulb which convert AC to DC.

Write the 10 points of transistor

 1) Transistor is a semiconductor device.

2) Transistor can be used for both conduct and insulate electric current and voltage.

3) Transistor basically used as a switch and an amplifier.

4) There is two types of BJT (Bipolar Junction Transistor) 

       i) P-N-P Transistor

       ii) N-P-N Transistor

5) BJT Transistor has three terminal there are Base, Emitter and Collector.

6) There are three types of Transistor i) BJT (Bipolar Junction Transistor)

                                                            ii) FET (Field Effect Transistor)

                                                            iii) IGBT ( Insulated Gate Bipolar Transistor)

7) In BJT Transistor there are three types of configuration i) Common Base (CB)

                                                                                              ii) Common Collector (CC)

                                                                                              iii) Common Emitter (CE)

8) The advantage of Transistor is i) Low cost and small in size.

                                                      ii) Low operating voltage.

                                                      iii) No power consumption.

                                                      iv) Fast switching.

9) The limitation of Transistor is : Transistor lack higher mobility.

10) The limitation of transistor is : The Transistor effected by cosmic rays and radiation.

How many SCRs uses in full wave controlled rectifier with midpoint (Centertaped) ?

 In full wave controlled rectifier with midpoint (Centertaped) there is only 2 SCRs is required.

Deepak Joshi is a science student or no

 As you know the life of Arts, Commerce and science students. Science students life, its full with stress and hard working study life.

As you know that Science student always do their study. they have not any extra time to go any way for enjoying. Because science study is very much costly and tough.

But as you know about commerce student life, it is less pressure. Because Commerce students have only theory work and not practical work.

As Commerce students life = As Arts students life.

But as we see depth in science students life, it has not only pressure of theory but it has also pressure of practical writing and practical exam.

So from my point of view, Science students have not much time to do like tik tok videos.

Give reason why ultrasonic sound waves are sent from ships towards the seabed

 First of all we know that, what is ultrasonic sound :- The sound having frequency above human audible range are called as ultrasonic sound or supersonic sound.

We human can only heard sound in range from 20 Hz To 20 KHz.

But in case of ultrasonic sound it is above 20 KHz range.

For determine the depth of sea, therefore ultrasonic sound waves are sent from ships toward the seabed.

What is source wave determined?

 1)The source waves sends outs its waves in all possible directions.

 2) Source wave is also known by primary source wave.

3) Secondary source wave is formed by primary source wave.

Advantage of secondary wavelets for Huygens principle

 1) Its sends out secondary waves only in forward direction.

2) Secondary wave is effective only at the points where it touches the envelope.

3) Secondary source is situated on a wave front.