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Explain (1) electric field at axial point or equilateral line (2) guass theorem (3) young double slit experiment (4) lens maker formula (5) different types of telescope with diagram

Posted by Akshita Kumawat 5 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Siddharth Mishra 5 years ago

For Gauss's law we have to prove 1/£° time of charge ..... So We have E•dS where as E is electric field intensity and S is surface area of sphere now We have studied that E=kq/r^2 And k=1/4π£°(1 by 4 pie epsilon not) Now put value of both E and s in E•ds S=4πr^2 (4 pie r squ•) Now 4πr^2 and 4πr^2 will be cancel out and you will get 1/£°(1 by Epsilon not) Note:- for removing d you have have to take cos 0 because when you will draw a circle you will get to know why i took cos 0°(cos0°=1)

Diti Urvija 5 years, 1 month ago

Gauss 's theorem states that the total flux through the closed surface is 1 by Epsilon Not times the total flux enclosed by the closed surface. Derivation nhi ho payega ispr Can you give your question paper of physics pre board

Diti Urvija 5 years, 1 month ago

(5) ye ncert me mil jayega

Diti Urvija 5 years, 1 month ago

Kaise ispr nhi hoga

Akshita Kumawat 5 years, 1 month ago

Jaldi

ANSWER

Explain why the intensity of higher order fringes in a single slit diffraction pattern becomes weaker than the lower order fringes ?

Posted by D D 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the force between two small charged spheres having charges of 2×10

Posted by Ashirvad Kumar 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 11 months ago

Please ask question with complete information.

ANSWER

As the switch S is closed in the circuit shown in figure below , then find current passed through it.

Posted by Ankit Kumar 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Akshita Kumawat 5 years, 1 month ago

Vo to bhej

Akshita Kumawat 5 years, 1 month ago

Figure kha hai iska

ANSWER

Workdone to move a charge along a closed lath inside

Posted by Vikram Singh 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derivation of average power in ac circuit.

Posted by Diti Urvija 4 years, 9 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 9 months ago

The average ac power is found by multiplying the rms values of current and voltage. Ohm's law for the rms ac is found by dividing the rms voltage by the impedance. In an ac circuit, there is a phase angle between the source voltage and the current, which can be found by dividing the resistance by the impedance.

ANSWER

Difference between nuclear fusion and nuclear fission

Posted by Gudiya Pandey 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Gudiya Pandey 5 years ago

Only difference

Aditya Choudhery 5 years, 1 month ago

U want point differences ?? Or detailed one

ANSWER

Electron project

Posted by Aashu Chouhan 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Dhatuvo me electrano ka shantikal

Posted by Sangita Awasiya 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

30 c.m. duri pr 2 neytan kulam man ka vighut chhetr utpann karne vale bindu aavesh ka man kya hoga

Posted by Sangita Awasiya 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Prove that f=r/2

Posted by Ammu T.P 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Aditya Gupta 5 years, 1 month ago

Nai dege

ANSWER

Zig zeg door

Posted by Rahul Kumar 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is carbon resistance?

Posted by Uttam Padwar 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Nishant Pandey 5 years, 1 month ago

Phir bhi... Carbon resistors are made up of carbon compound. More the carbon content in the resistor less is the resistivity. They are used in small electrical circuits.

Nishant Pandey 5 years, 1 month ago

Bhai reduced syllabus ... Se hai

ANSWER

What is inductance in the magnetic field of earth?how would we determine?

Posted by Nitish Chauhan 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Photodiode are used to detect

Posted by Tarun Choudhary 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Tanya ?? 5 years, 1 month ago

Optical signal

Hanshika Kadyan 5 years, 1 month ago

It used to detect optical signal..

ANSWER

Why are Si and GaAs preferred materials for fabrication in solar cell

Posted by Tarun Choudhary 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Explain briefly how a photodiode operates

Posted by Tarun Choudhary 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What are the applications of total internal reflection?

Posted by Sweta Kumari 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Tarun Kumar 5 years, 1 month ago

Optical fibre Diamond

Tarun Choudhary 5 years, 1 month ago

This phenomenon is used in many optical instruments like microscope, telescope etc. (2) the brilliance of diamond is due to this phenomenon.(3) optical fibre work on this principle.(4) the phenomenon of mirage can be explained on the basis of this phenomenon

ANSWER

Electric field due to a uniformly charged infinite plane sheet having charge density Sigma at a distance R is __________

Posted by Shweta Kumari 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Nishant Pandey 5 years, 1 month ago

E =1/4pi €o❌ int.(sigma dA/R^2)

Sweta Kumari 5 years, 1 month ago

I think it will be Sigma/2Eo

ANSWER

The total charge on a body having n1 electron and n2 protons is equal to __________

Posted by Shweta Kumari 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Royal Pandit Vibhor Mishra 5 years, 1 month ago

q=ne

ANSWER

Tma file

Posted by Gulab Mandothya 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Pre boards k exam kiske kiske ho gaye h

Posted by Diti Urvija 5 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Tanya ?? 5 years, 1 month ago

Pre board 1 ho gye....

Ruhi Yadav 5 years, 1 month ago

Hmare ho gye

Ram Maurya 5 years, 1 month ago

ᴀʙʜɪ ɴʜɪ

Diti Urvija 5 years, 1 month ago

Hamara 1 March se hi h

Vivek Chaurasia 5 years, 1 month ago

8 march sa start ha yr ???pratical vi h usi time...

ANSWER

the plot of variation of potential difference across the combination of three identical cells in series versus in Sun below what is the EMF and internal resistance of each cell?

Posted by Surju Kisku 4 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 11 months ago

ANSWER

What is geiss theorem

Posted by Rahul Agrawal 5 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Siddharth Sharma 5 years, 1 month ago

The electric flux linked with enclosed surface ,(Gaussian surface) is equal to1/Eó times of net charge enclosed by the gaussian surface.

Bhumika Gupta 5 years, 1 month ago

The electric flux linked with enclosed surface ,(Gaussian surface) is equal to1/Eó times of net charge enclosed by the gaussian surface.

Sibani Dash 5 years, 1 month ago

The total electric flux through a closed surface (Gaussian surface) is equal to 1/epsilon not times the net charge enclosed by the closed surface.

ANSWER

A point charge of 2c is placed at centre of faraday cage in the shape of cube with surface of 9cm edge. The number of electric field lines passing through the cube normally will be

Posted by Ansh Shukla 5 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

The first excitation potential of a given atom is 10.2 volt find the ionization potential

Posted by Anamika Vk 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prince Gupta 5 years, 1 month ago

Search it on google Or on doubtnut

ANSWER

Difference in ray and wave

Posted by Sarthak Rana 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tarun Choudhary 5 years, 1 month ago

A wave is a disturbance traveling through a medium while a ray is a narrow beam of light which shows the path the light take

ANSWER

Light

Posted by Ujjwal Singh 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prince Gupta 5 years, 1 month ago

Kya karna hai light? ka??

ANSWER

Calculate the electrostatics force acting between two plates of parallel plate capacitor.

Posted by Ankit Mandal 5 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Saugat Dutta 5 years, 1 month ago

E=sigma/2e°=q/2Ae° |F|=|q||E|=q×q/2Ae°=q²/2Ae°

ANSWER

Mention one use of part of electromagnetic spectrum to which a wavelength of 21 cm (emitted by hydrogen in interstellar space) belongs

Posted by Shivam Gupta 5 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Khushi Rawat 5 years, 1 month ago

One use of microwave 1.used in radar system

Ujjwal Singh 5 years, 1 month ago

H vishno chinchhu frenki p haseko vedo badgo chubhi rechel

ANSWER

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