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Deruvation of cyclotron

Posted by Saif Ali 5 years, 10 months ago

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Suggest a suitable method to invert an image (i) Without change in size. (ii) Without change in size and without deviation from its original direction of view. Explain how the same is achieved?

Posted by Shaji Sultan 7 years ago

CBSE > Class 12 > Physics

1 answers

Rahul Choudhary 7 years ago

By placing it in front of concave mirror at its centre of curvature

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Derivations of physics

Posted by Adnan Mir 7 years ago

CBSE > Class 12 > Physics

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Proove that displacement current is numerically equal to conduction current

Posted by Jinu Jain 7 years ago

CBSE > Class 12 > Physics

0 answers

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A charge of minus 10 M is brought from point a to c v r. Me in vacuum as shown in figure calculate the work done if the charge at origin is + 20 m c does it have an impact on the work done if + 21 is replaced by minus 20 minutes

Posted by Prahlad Soni 7 years ago

CBSE > Class 12 > Physics

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Graph between ac and dc

Posted by Aman Kumar Yadav 7 years ago

CBSE > Class 12 > Physics

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A radioactive isotopes has a half life of 10 years . How long will it rake for the activity to reduced to 3.125%

Posted by Sneha Kaushik 7 years ago

CBSE > Class 12 > Physics

1 answers

Sayeda Iram Ateeq 7 years ago

R/Ro = N/No = (1/2)^n Given- R/Ro=3.125% & T=10yrs R/Ro= (1/2)^n 3.125/100= (1/2)^n 1/32= (1/2)^n (1/2)^5= (1/2)^n 5=n As we know that, n= t/ T then, t= T×n t=10×5=>50yrs Hence, the radioactive isotope will give 50yrs to reduce to 3.125%.

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Describe tha situation of stable and unstable equilibrium when a dipole is placed left and then right side of a negatively charged plane sheet

Posted by Devyanshi Khandelwal 7 years ago

CBSE > Class 12 > Physics

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Columbs law proof

Posted by Prabhleen Singh 7 years ago

CBSE > Class 12 > Physics

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Lc oscillations topic

Posted by Udit Kumar 7 years ago

CBSE > Class 12 > Physics

1 answers

Prabhleen Singh 7 years ago

An lc,oscillating at its natural frequency can store electrical energy .A capacitor stores energy in electric field(E) between its plates depending on the voltage across it.And an inductor stores energy in magnetic field (B)depending on current through it.

2Thank You

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How do we calculate focal length of lens when different medium around us

Posted by Ayush Pandey 7 years ago

CBSE > Class 12 > Physics

1 answers

Prabhleen Singh 7 years ago

Use lens makers formula 1/f = (u2/u1 -1 )(1/R1-1/R2)

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The refractive index of diamond is much greater than that of glass.how does a diamond cutter make use

Posted by Gulnaj Khan 7 years ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 7 years ago

The refractive index of diamond(2.42) is much greater than that of glass(1.5). The large refractive index results in small critical angle for diamond i.e. about 24⁰. diamond cutter cuts the faces in such a way that light moving from diamond to air always strike the surface at angle greater than critical angle and gets Total Internal Reflection. Thus the diamond shines.

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How does the relaxation time of electron changes when temperature of conductor increases

Posted by Sushmita Pal 7 years ago

CBSE > Class 12 > Physics

1 answers

Mahak Garg 7 years ago

when temperature increase relaxation time decrease

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Can a convex lens form a virtual image

Posted by Dheeraj Singh 7 years ago

CBSE > Class 12 > Physics

2 answers

Dheeraj Singh 6 years, 11 months ago

Give reason

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Suhani Rana? 7 years ago

Yes

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Drive the expression for electric field to dipole at axial Line or equatorial line

Posted by Manvi Chandel 7 years ago

CBSE > Class 12 > Physics

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What is the principle of cyclotron

Posted by Abc Kamboz 7 years ago

CBSE > Class 12 > Physics

2 answers

Suhani Rana? 7 years ago

It is based on a fact that a positively charged particle can be accelerated to sufficiently high energy with the help of smaller values of oscillating electric field by making it to cross the same electric field time and again with the help of perpendicular magnetic fields.

1Thank You

Karthick Raja 5 years, 10 months ago

Nothing

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What is packing fraction?

Posted by Lalit Kapoor 7 years ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 7 years ago

Packing faction or Packing efficiency is the percentage of total space filled by the particles.

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Quality factor for LCR CIRCUIT

Posted by My Technology World 7 years ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 7 years ago

Quality factor relates the maximum or peak energy stored in the circuit (the reactance) to the energy dissipated (the resistance) during each cycle of oscillation.

Quality factor is expressed as,

Q-factor is a dimensionless quantity.

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What happens when current carrying conductor is placed in magnetic field

Posted by Vinay R 7 years ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 7 years ago

The direction of force on a current crrying conductor placed in a magnetic field is obtained by Fleming's left hand rule. ... Thus, if a current carrying conductor is placed in a magnetic field, it experiences the Lorentz force (unless the angle between the flow of current and magnetc lines is 0°).

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Lenz law is aconsequence of energy conservation

Posted by Lokinder Saini 7 years ago

CBSE > Class 12 > Physics

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up board exm was tough this year the no of numerical wer more ples tell

Posted by Pragya Gupta 7 years ago

CBSE > Class 12 > Physics

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Ncert books are sufficient for boards exam

Posted by Shreyash Rajoria 7 years ago

CBSE > Class 12 > Physics

1 answers

Anant Jain 7 years ago

Yes but you must breifly prepare the exercise of each chapter

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Expression of modified Ampere ciruital law in conduction and displacement current?and explain displacement current

Posted by Shubham Pal 7 years ago

CBSE > Class 12 > Physics

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Please any one can tell me mirror formula for point objects & for other objects are different or not

Posted by Gaurav Verma 7 years ago

CBSE > Class 12 > Physics

1 answers

Shubham Pal 7 years ago

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Name the electromagnetic waves which are suitable for radar system used in aircraft navigation write the range and frequency of the waves

Posted by Rajkumar Sahu 7 years ago

CBSE > Class 12 > Physics

3 answers

A K 7 years ago

Radio waves is used

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Shubham Pal 7 years ago

Microwave

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Sahana Sankar 7 years ago

Microwaves are used in radar system Frequency range is 10^9 to 10^12 Wavelength range is 0.1m to 1 mm

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Why is the mass of nucleus is always less than the sum of mass of neutron and Proton

Posted by Kanika Singh 7 years ago

CBSE > Class 12 > Physics

1 answers

Deepak Kumar 7 years ago

The actual mass is always less than the sum of the individual masses of the constituent protons and neutrons because energy is removed when when the nucleus is formed.This mass is known as the mass defect and is missing in the resulting nucleus and represents the energy released when the nucleus is formed. For more details please go through the section 13.4.2 of chapter 13

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What happened to intensity in ydse when phase difference change with time

Posted by Ankit Singh 7 years ago

CBSE > Class 12 > Physics

0 answers

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Definite the electric flux and write si unit

Posted by Khemraj Jaiswal 7 years ago

CBSE > Class 12 > Physics

2 answers

Suhani Rana? 7 years ago

Electric flux through a given area held inside an electric field is the measure of total no of electric field lines passing normally through a given area. Its si unit is Nm^2/C or Vm

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Hip Hop 7 years ago

I dont know please help me prepare for my exams...im very tensed right now

3Thank You

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Explain Beta decay of tritium

Posted by Nitika Neb 7 years ago

CBSE > Class 12 > Physics

0 answers

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How depletion region and potential Barrier are formed in junction diode

Posted by Garima Khareta 7 years ago

CBSE > Class 12 > Physics

1 answers

Nitika Neb 7 years ago

imaginary battery is developed across the junction which prevents further movement of majority carriers and the voltage so developed is known as the potential barrier. ... This is how the depletion layer or potential barrier is formed in the pn junction diode.

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