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a.Drawagraphshowingvariationofphotocurrentwithanodepotentialforaparticular intensityofincidentradiation.Marksaturationcurrentandstoppingpotential. b.Byhowmuchwouldthestoppingpotentialforagivenphotosensitivesurfacegoupif thefrequencyoftheincidentradiationsweretobeincreasedfrom4×10^15 Hz to 8× 10^15Hz?

Posted by Manish Rai 8 years ago

CBSE > Class 12 > Physics

5 answers

Your Principal 8 years ago

I understand jisne type kiya hai use typing nahi aati.Per aap toh sahi hai aap ko toh space dena aata hai na toh phir aap ne kyu answer add kiya??kisi ko burn bolne mai maza aata hai kya??

0Thank You

Hero Time 8 years ago

English me lik

1Thank You

Ayush Negi 8 years ago

Kya bakchodi hai ye!!!!

1Thank You

Namami Shukla 8 years ago

Bhai yahan graph nhi bante??...plzzzz agli baar aise likhna ki samajh aaye kya likha hai

3Thank You

Radhika Tyagi 8 years ago

Bhai bich me space dene bhul gya kya? ?????

4Thank You

ANSWER

What is the relation between line of force and electric field other than E=F/Q?

Posted by Akriti Verma 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How are side band produce

Posted by Deepak Sehrawat 8 years ago

CBSE > Class 12 > Physics

1 answers

Kailash Thakur 8 years ago

Side band are produced due to the superposition of carrier wave over modulating signal

1Thank You

ANSWER

Why in npn transistor base region is kept thun

Posted by Sanya Rastogi 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define electric dipole moment. is it a scaler vactor ? Derive the expression for electric field of a dipole at a point. (1). On the equatorial plane of the dipole (2). On the axis of the dipole.

Posted by Shubham Upadhyay 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Find the condition under which the charged particles moving with different speeds in the presence of electric and magnetic field vectors can be used to select charged particleof a particular speed.

Posted by Karan Singh Panwar 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Value of ryberg constant

Posted by Sanya Rastogi 8 years ago

CBSE > Class 12 > Physics

3 answers

Shivanshu Yadav 8 years ago

1.097x10^-7m^-1

1Thank You

Prayag Shandilya 8 years ago

BTW it's value is 1.09 * 10^7 per m

1Thank You

Prayag Shandilya 8 years ago

U can search for it in book or either on net rather than waiting for someone to answer to u

0Thank You

ANSWER

Two point charges of +10 raise to the power -8 coulomb or -10 raise to the power -8 coulomb are placed 0.1 apart .calculate electric field intensity at point A,B,C

Posted by Sarvjeet Kaur 8 years ago

CBSE > Class 12 > Physics

2 answers

Harshit Tiwari H 8 years ago

Good

0Thank You

Radhika Tyagi 8 years ago

A, B, C h kha pe... Ye to bta do

1Thank You

ANSWER

If the energy of electron un the nth orbital is -13.6/n square then what energy required to excite an electron from ground state to second excited state

Posted by Sanya Rastogi 8 years ago

CBSE > Class 12 > Physics

2 answers

Sanya Rastogi 8 years ago

i willl slap u lavish

0Thank You

Chembio Sucker 8 years ago

oooo rastogi 3 idiots

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ANSWER

Derive an expression for drift velocity of free electron in a conductor in terms of relaxation time

Posted by Dinesh Thakur 8 years ago

CBSE > Class 12 > Physics

4 answers

Ishu Chouhan 8 years ago

F= eE.......(1) Also, F= ma .....(2) From (1) and (2) , ma=eE a=eE/m, Let.V=u+at Vd=0+a tau Vd= eE tau / m

0Thank You

Vikram Choudhary 8 years ago

Vd=uE u=eT/m

0Thank You

Ishu Chouhan 8 years ago

Easy h

0Thank You

Ishu Chouhan 8 years ago

Vd= eEtau/ m

0Thank You

ANSWER

What are thermal neutrons ?? Kisi Ko PTA hai toh btado

Posted by Jass Mangla 8 years ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 8 years ago

Neutrons which are in thermal equilibrium with surrounding

0Thank You

ANSWER

what is the law of capacitor ..explain me ..

Posted by Abhishek Guaain 8 years ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 8 years ago

The arrangement of two mettalic conductors in such a. Way that one is earthen and other has ability to store charge

1Thank You

ANSWER

For a single slit of width 'a' the first minimum of the interference pattern of a monochromatic light of wavelength Lambda Occurs at an angle lambda by 'a'. At the same angle of lambda by 'a' , we get a maximum for two narrow slits separated by distance 'a'. Explain.

Posted by Surinder Pal Kaur 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A slab of material of dielectric constant k has the same as that of the plates of a parallel plate capacitor

Posted by Jaya Sharma 8 years ago

CBSE > Class 12 > Physics

1 answers

Abhishek Guaain 8 years ago

0Thank You

ANSWER

Coulombs kaw

Posted by Vishal Yadav 8 years ago

CBSE > Class 12 > Physics

1 answers

Surbhi Raghu 8 years ago

It states that force of attraction and repulsion b/w two charges at rest is directly proportional to the product of magnitude of the charges and is inversely proportional to the square of the distances b/w the charges.

2Thank You

ANSWER

Give the phase difference between applied AC voltage and current in LCR circuit at resonance

Posted by Lovepreet Singh 4 years, 9 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 9 months ago

In an AC circuit containing, L, C and R, the voltage is ahead of current in the inductor by π/2 and the voltage is behind current in the capacitor by π/2. So, the phase difference between the voltage across inductor, V_L, and the voltage across capacitor, V_C, is π/2 + π/2 = π.

0Thank You

ANSWER

which is the best method of reducing power loss in an AC circuit and why

Posted by Lovepreet Singh 8 years ago

CBSE > Class 12 > Physics