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Explain working of nuclear reactor?

Posted by Vikash Vishwal 7 years, 2 months ago

CBSE > Class 12 > Physics

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Difference between diffraction and diflection of light.

Posted by Vikash Vishwal 4 years, 9 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 9 months ago

Reflection involves a change in direction of waves when they bounce off a barrier; refraction of waves involves a change in the direction of waves as they pass from one medium to another; and diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path.

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Prove that rest mass of photon is zero

Posted by Tania Sharma 7 years, 2 months ago

CBSE > Class 12 > Physics

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Derive an expression for the force acting on a current carrying conductor placed in a uniform magnetic field name the rule which gives the direction of the force write the conditions for which this force will havw maximum minimum value

Posted by Sakshi Meena 7 years, 2 months ago

CBSE > Class 12 > Physics

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optoelectronic devices for the diet and solar cell have the same work in principal but different them of the process of operation explain the difference between the two device in terms of biasing junction area IV character

Posted by Mohvijay Jain 7 years, 2 months ago

CBSE > Class 12 > Physics

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1pf equal to

Posted by Ritesh Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Smani ... 7 years, 2 months ago

10^-12 F

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Brewester law explain

Posted by Aanchal Kaushik' 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ashish Nagar 7 years, 2 months ago

According to brusters law the tangent of the polarising angle is equal to the refractive index when the angle between the refletand refracted is 90 i.e. U=tan Ip

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Hamare periodic test chal rha hai friends please physics main nuclei chapter ke important topic btawo na please. ??

Posted by Sãñjü Dïdêl 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Saumya Agrawal 7 years, 2 months ago

Study the graphs of nuclear binding energy very carefully And also practice some numericals related to decay

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Divyanshu Sahu 7 years, 2 months ago

Radius and velocity of nth orbital wala derivation pura phad le na

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What does E= yum c square mean..!

Posted by Animesh Mukherjee 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Arpit Yadav 7 years, 2 months ago

It's not "E= yum c square" , its E=mc² (Theory of Relativity) It means that Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing. Under the right conditions, energy can become mass, and vice versa.

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I want solutions for all cbse papers plzzz upload it

Posted by Muskan Muskan 7 years, 2 months ago

CBSE > Class 12 > Physics

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Potential difference in a dipole moment

Posted by Lucky Teotia 7 years, 2 months ago

CBSE > Class 12 > Physics

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Which ray harm eye during welding?

Posted by Ashutosh Joshi 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Smani ... 7 years, 2 months ago

UV rays

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Manish Yadav 7 years, 2 months ago

Uv rays

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Why current growth is delayed in an inductor?

Posted by Kanupriya Gupta 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ashutosh Joshi 7 years, 2 months ago

When switch is close sinusodial voltage will cause current to flow zero to max. It being delayed by self induction and current delayed by 90 degree

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What units of conductance???

Posted by Abhishek Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Yogita Ingle 7 years, 2 months ago

The inverse of resistance is known as conductance.
It is measured in a unit called Siemens represented by the symbol ‘S’ .
It is equal to ohm^–1also known as mho or Ω ^–1.
The electrical conductance depends on:
1. Nature and structure of the metal
2. Number of valence electrons per atom
3. Electrical conductance decreases with increase of temperature and vice versa.

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Deepak Jindal 7 years, 2 months ago

mho or ohm spells backward

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When max K.E. of photoelectron gets doubled when the wavelength of light incident on surface changes from lambda1 to lamda2 . Derive expression for the threshold wavelength and work function

Posted by Ritika Gurung 7 years, 2 months ago

CBSE > Class 12 > Physics

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How rhe power loss decreses in transmission of current using ac over dc over long distances? explain with example.

Posted by Ritika Patil 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Ritika Patil 7 years, 2 months ago

Thanks?

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Manish Yadav 7 years, 2 months ago

Since power loss is equal -- I square R T so in the case of a Ac . we can decrease the current (I) by using a step up transformer which will result in lesser power loss

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A telescope resolve ,whereas a microscope magnifies...justify this statement.

Posted by Sanjay Agarwal 7 years, 2 months ago

CBSE > Class 12 > Physics

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What is marking weightage of communication chapter

Posted by Mayank K. Mahour 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Sanjay Agarwal 7 years, 2 months ago

5 marks

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Kya board exams me communication chapter mein "internet" k baare me kuch pucha jaata h??

Posted by Mayank K. Mahour 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Shama Shama Sheikh 7 years, 2 months ago

Important topic is block diagram of communication and sky wave,, modulation and de modulation

1Thank You

Ritika Patil 7 years, 2 months ago

As the weitage is 5 marks and there are many things to ask other than that and internet is not imp

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Write the basic features of photon picture of electromagnetic radition on which Eibsteins photoelectric equation is based

Posted by Tarun Gulia 7 years, 2 months ago

CBSE > Class 12 > Physics

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How is the phoelectric current affected on increasing the intensity if the incident raditions and why plz reply as soon as possible becoz i have preboard on monday

Posted by Tarun Gulia 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ritika Patil 7 years, 2 months ago

On increasing intensity as it observes that current also increases as the number of photoelectron emited increase hence photoelectric current increase

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Give the nature of V–I graph for (i) ohmic (ii) non-ohmic circuit elements. Give one example of each type.

Posted by Dheeraj Manral 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Shama Shama Sheikh 7 years, 2 months ago

Non ohmic circuit example is gallium arsnide and pn junction

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Explain ampere circuital law

Posted by Madhukar Kumar Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Anurag Rana 7 years, 2 months ago

It states that the line integral of magnetic field induction over a close loop is equal to u0 times the current threading through it

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Give reason,why high frequency carrier waves are needed for effective transmission of information signal?

Posted by Ruby Sharma 7 years, 2 months ago

CBSE > Class 12 > Physics

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a ray of light is incidence on a medium with angle of incidence i and is reflected into a second medium with angle of refracted r . then find ratio of velocity of light in first medium to velocity of light in second medium

Posted by Mohd Lukka 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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How does one explain increase in resistivity of a metal with increase of temperature

Posted by Yash Surya 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Aryan Rai 7 years, 2 months ago

Does it resistance or resistivity? Can you clearify that?

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Electric potencial due to a point charge

Posted by Gaurav Singh Thakur 5 years, 10 months ago

CBSE > Class 12 > Physics

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Can i score 100 out of 100 with the help of examidea or arihant or oswal sample paper . Please tell me. .Any reference book is good or examidea is good . Which is excellent for preparation. Thanks

Posted by Harshit Pratap Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Vivek Bhardwaj 7 years, 2 months ago

My opinion is that firstly u clear ncert and than a valuable book 'physics scanner '.... in which u get 10+ years previous board questions which can help u lot....

1Thank You

Apoorv Pandey 7 years, 2 months ago

Dear first of you have to complete ncert and then after you can refer for Arihant chapterwise for physics and it is best upto my concern.... Rest upon u....

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Write the underlying principles of a moving coil galvanometer .

Posted by Arti Vishwakarma 7 years, 2 months ago

CBSE > Class 12 > Physics