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Derive Einstein photoelectric equation ??

Posted by Megha Bheel 8 years, 1 month ago

1 answers

It says that max KE of ejected photo electrons is equal to the energy of incident photon - enery used to eject out electron from the metallic surface (work function) Hence by energy conservation we have KE(max)=hv-work function

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Which is among alpha, beta and gama radiations is affected by an electric field and why??

Posted by Hemant Bhardwaj 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tanvi Singh 8 years, 1 month ago

Alpha and beta radiations get affected by the presence of electric field bcoz these r positively n negatively charges respectively.....since gama does not have any charge it doesn't get affected by e.f.

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The very most important topics of physics to pass on the board exam

Posted by Shashwat Kumar 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Shashwat Kumar 8 years, 1 month ago

Thanks FATIMA

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Pranjali Mahajan 8 years, 1 month ago

Ac bhi kar lo usme kuch Nahi hai jyada

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Princess Fatima 8 years, 1 month ago

Optics.. electromagnetic waves.. electrostatics or magnetic effect of current and magnetism

3Thank You

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Plz help me tell me how should i study chem and physics plzzzzzzzz.

Posted by Kiti Thakur 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Anand Rathore 8 years, 1 month ago

Take ncert question and than sample paper This way to learn what type of question ask in exam

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Kiti Thakur 8 years, 1 month ago

Is it possible to complete it in 10 days

1Thank You

Lalit Sharma 8 years, 1 month ago

Full ncert learn and ncert question.

4Thank You

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Why is yellow light favorable in foggy night

Posted by Avinash Nongthombam 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 8 years, 1 month ago

Abe bhoot dondne niklega kya fogy day me ???

0Thank You

Bhautik Agrawal 8 years, 1 month ago

Actually we prefer red light as it is least scattered but yellow being near to red in spectrum it also remains less scattered by fogg particles

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Physics NCERT part 1, question 2.21 is not clear even after seeing the solution.. Please help

Posted by Ayush Mukherjee 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is impact parameter ?

Posted by Manas Kamde 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 8 years, 1 month ago

Perpendicular dist. of path of e- form central line of nuclei

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Expression for drift velocity

Posted by Priyal Jat 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Manas Kamde 8 years, 1 month ago

Vd = -(eE × tau )/m

3Thank You

Tanay Sharma 8 years, 1 month ago

Vd=qEt/m where t =average relaxation time

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ANSWER

From where should I do question,,?

Posted by Shubham Anand 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 8 years, 1 month ago

Ncert ?

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The tresold frequency of metal is 4.4 into 10to the power 14Hz calculate work function in electron volt

Posted by Sakshi Singh 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Tanay Sharma 8 years, 1 month ago

Formula = [plank's constant(h)][threshold frequency]

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Manas Kamde 8 years, 1 month ago

What is the formula

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Tanay Sharma 8 years, 1 month ago

1.815 ev

1Thank You

ANSWER

Test

Posted by Yashasvi Singh 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 8 years, 1 month ago

kon se , kha ke , kis liye ,kyu test ???

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Is binding energy curve a important topic for the board examination

Posted by Palak Agarwal 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Vatsal Nautiyal 8 years, 1 month ago

Yes it is very important topic of Atoms and Nuclei Chapter

1Thank You

ANSWER

How to change MeV into joules??

Posted by Shivanshi Rana 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shivanshu Yadav 8 years, 1 month ago

Tanaya ji I know you

1Thank You

Tanay Sharma 8 years, 1 month ago

1Mev=1.6/10¹³ JOULES

2Thank You

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Formula of magnetic field at axital point for a circular loop

Posted by Rashi Bari 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Rashi Bari 8 years, 1 month ago

Mew not IR sq or Mew not πIR sq ? bcs solution me pi bhi multiplied h numerator k sath.

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Tanay Sharma 8 years, 1 month ago

UºIR²/2(R²+X²)³/²

3Thank You

Rashi Bari 8 years, 1 month ago

Axial*

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Why Earth is considered as zero potential in practice ? justify .

Posted by Jin Kazama 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Alok Kumar 8 years, 1 month ago

For a localised charge distribution the potential is set to zero far away from the charge distribution (at infinity) . Now when grounding a conductor that is connecting to earth it is said that we are setting the potential to zero.

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Energy stored in parallel plate capacitor

Posted by Sunita Kumari 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Tanay Sharma 8 years, 1 month ago

1/2CV², 1/2E° E², 1/2Q²/C

0Thank You

Jin Kazama 8 years, 1 month ago

C=AEo/d

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why electric field line can not pass through close loop

Posted by Deepesh Beniwal 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 8 years, 1 month ago

bcz. they have starting pt. (+ve ) and terminating pt. (-ve )

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Analog and Digital cirute digram how to make?

Posted by Shivani Maharaj 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shivanshi Rana 8 years, 1 month ago

Analog signal square ki tarah banege or digital signals waves ki tarah

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Jin Kazama 8 years, 1 month ago

yha per dia. nhi banta hai

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What is law of refraction in huygen principles

Posted by Akash Sahu 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tanay Sharma 8 years, 1 month ago

Sini/sinr =C1/C2 =refractive index

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What is the definition of an ampere?

Posted by Yogesh Kadyan 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Kiti Thakur 8 years, 1 month ago

Electric current pas through the two parallel conductors kept at 1 m apart in vacaum will be one amphere if each of them attract or repel each other by the force2*10*8

2Thank You

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Obtain EFI at a point on axis of circular ring

Posted by Kk Rathore 8 years, 1 month ago

CBSE > Class 12 > Physics