CBSE > Class 12 > Physics | CBSE Board | Homework Help

The working of cyclotron is based on the principle that frequency of revolution of charged particles is not dependent on its energy . It is used to accelerate the charged particles such as protons/negatively charged ions.

2Thank You

Mohd Faisal 6 years, 1 month ago

It accelerate photon deutron and alpha partical at very hingh energy

1Thank You

Arnav Kandari 6 years, 1 month ago

Principle:Cyclotron uses both electric and magnetic field to increase the energy of charged particles.

1Thank You

ANSWER

A converging and a diverging lens of equal focal length are placed coaxially in contact. Find the power and focal length of the combination.

Posted by Shristi Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Riya Rana 6 years, 1 month ago

F= infinity

0Thank You

ANSWER

Difference between magnetic intensity and intensity of magnetisation?

Posted by Arnav Kandari 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Riya Rana 6 years, 1 month ago

Magnetic intensity is the ability of the magnetic field to magnetise a substance. Intensity of magnetisation is the ratio of the magnetic moment to the volume.

2Thank You

ANSWER

What is stopping potential ??

Posted by Akshar Pal 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Yogita Ingle 6 years, 1 month ago

The negative potential of the collector plate at which the photoelectric current becomes zero is called stopping potential or cut-off potential. Stopping potential is that value of retarding potential difference between two plates which is just sufficient to halt the most energetic photoelectrons emitted.
It is denoted by "Vo".

1Thank You

Riya Rana 6 years, 1 month ago

Stoping potential is the minimum negative value at which current becomes zero.

0Thank You

ANSWER

The electic field at a point due to charge q

Posted by Yusuf Ali 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Apoorva Rao 6 years, 1 month ago

E=k. q/r²

0Thank You

Abhay Mishra 6 years, 1 month ago

Kq/r^2

0Thank You

Vanshika Mishra 6 years, 1 month ago

Kq/r2....(r is distance btw charge and point)

0Thank You

ANSWER

What happen when electron revolve between dees in the cyclotron

Posted by Chahar Chahar 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Nikita Beniwal 6 years, 1 month ago

It will escape from dees due to light mass

0Thank You

ANSWER

From where i get previous years board paper

Posted by Asha Rathee 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Apoorva Rao 6 years, 1 month ago

This site, choose your subject and you can download from that

0Thank You

Mahesh M 6 years, 1 month ago

Pe**is

0Thank You

Jashan Aggarwal 6 years, 1 month ago

Google chrome

0Thank You

ANSWER

What are the important derivations in physics for 2020 board?

Posted by Shalini Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Mahesh M 6 years, 1 month ago

That YouTube channel is fake and waste don't refer it he is a cheater guys ask me if u have any doubt

2Thank You

Prabhjot Singh 6 years, 1 month ago

On youtube search for aman dhattarwal and in his recent videos he had given a pdf in which all the important derivation are given

2Thank You

Shalini Singh 6 years, 1 month ago

Plz give answer

0Thank You

ANSWER

Why pulsating DC is filtered before sending it in voltage regulator?

Posted by Tamanna Sharma 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

In the given diagram a point object is kept at the Focus F of the convexlens. The ray of light from the lens falls on the surfaces AB and BC of aright angled glass prism of refractive index 1.5 at an angle 42' Wherewill be the final image formed? Draw a ray diagram to show the positionof the final image formed. What change do you expect in your answer ilthe prism is replaced by a plane mirror?`

Posted by Freedom . 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Calculate the energy of photon of electromagnetic radiation oc wavelength?????????????????

Posted by Mohan Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Last 10year question paper with solution

Posted by Vishal Yadav 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Can anyone from Delhi can send send their pre-board questions paper of physics??plzz

Posted by Aakansha Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Leans Maker formula

Posted by Avinash Khokhar 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Abhay Mishra 6 years, 1 month ago

(U2/u1 -1)(1/R1-1/R2)

1Thank You

Kushal Prajapat 6 years, 1 month ago

1/f=(u2/u1 -1)(1/R1 - 1/R2)

1Thank You

ANSWER

Nuclear reactor topic of ch 13 nuclei is removed from syllabus or not ??

Posted by Akanksha Kumari? 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Dhinesh Ramamoorthy 6 years, 1 month ago

Yes its removed from the syllabus..

1Thank You

ANSWER

Electric field due to infinite length of the wire

Posted by Avinandan Ssharma 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Lav Dixit 6 years, 1 month ago

E=lemda÷2πr epsilonot

0Thank You

Deepak Ghorela 6 years, 1 month ago

2Kq/rl

0Thank You

ANSWER

Electric field due to charged shrll

Posted by Avinandan Ssharma 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Electric field due to charged solid sphere

Posted by Avinandan Ssharma 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Arnav Kandari 6 years, 1 month ago

Topic removed

0Thank You

ANSWER

In which situation is there a displacement current but no condition current.?

Posted by Abhishek Sah 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the force in between two parallel capacitor plates

Posted by Sumitra Khatri 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Sumitra Khatri 6 years, 1 month ago

Plz explain it completely how

0Thank You

Deepak Ghorela 6 years, 1 month ago

qxq/2A x apsileynod

0Thank You

Adi Kumar 6 years, 1 month ago

Q^2/2Aepsilon not

0Thank You

ANSWER

Why magnetic fields of solenoid is half at middle as that in Centre

Posted by Sumitra Khatri 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Abhishek Sah 6 years, 1 month ago

Ya... its magnetic field is half at the corner but not at the center...

0Thank You

Tamanna Sharma 6 years, 1 month ago

And secondly it's only true for a long infinite ideal solenoid

1Thank You

Tamanna Sharma 6 years, 1 month ago

Its magnetic field is half at the corner not at centre

0Thank You

Tamanna Sharma 6 years, 1 month ago

Your question is wrong

0Thank You

ANSWER

Why the magnetic field at the ends is half as that at middlle

Posted by Sumitra Khatri 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Repeated questions

Posted by Devi Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Arnav Kandari 6 years, 1 month ago

What repeated questions,answer me,what??

0Thank You

ANSWER

Energy stored formula of capacitor

Posted by Suryansh Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

6 answers

Apoorva Rao 6 years, 1 month ago

U=1/2CV²

1Thank You

Suryansh Singh 6 years, 1 month ago

How to prepare chemistry

0Thank You

Divya Shrivastav 6 years, 1 month ago

1/2 CV2 or 1/2 Q2/C

2Thank You

Ritwik Choudhary 6 years, 1 month ago

1/2 CV^2 Or 1/2 Q^2/C Or 1/2QV

1Thank You

Meghna Sharma 6 years, 1 month ago

U can further convert it in terms of Q also

1Thank You

Meghna Sharma 6 years, 1 month ago

1/2 CV^2

1Thank You

ANSWER

From which chapter derivation will come

Posted by Saurabh Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Saurabh Singh 6 years, 1 month ago

For how much marks out of 70 derivations will come??

1Thank You

Nikita Beniwal 6 years, 1 month ago

Sorry , in 5 mark question one from 3 chapter one from either magnetism Or A.C. nd one from optics

1Thank You

Nikita Beniwal 6 years, 1 month ago

2 from magnetism and 3 form optics

1Thank You

Nikita Beniwal 6 years, 1 month ago

1will from 1 unit

1Thank You

ANSWER

What is the formula of semiconductor

Posted by Ankit Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shefu ??????? 6 years, 1 month ago

Ne*Nh= Ni^2

0Thank You

Tamanna Sharma 6 years, 1 month ago

???????

0Thank You

ANSWER

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