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Itne se tym m physics kaise revise hpgi pr fir mere to kuch chapters abhi tk untouched h??

Posted by Shruti Mangal 8 years ago

CBSE > Class 12 > Physics

8 answers

Ishu Chouhan 8 years ago

Or aapki

Ishu Chouhan 8 years ago

Bhot achi ,eng ko touch nhi Kiya bas

Shruti Mangal 8 years ago

Aap logo ki kaisi preparation chl rhi h?

Ishu Chouhan 8 years ago

Thanks not allowed

Ishu Chouhan 8 years ago

And if u get time , then u can go through those chapters

Shruti Mangal 8 years ago

Thanq ishu

Ishu Chouhan 8 years ago

Agar aap un chapters ko Abhi karoge to Jo aapne pada h vo bhi bhul jaoge

Ishu Chouhan 8 years ago

Jo untouched unko mat karo ,aapne Jo pada h vo revise karo

ANSWER

Why zener diode heavily doped?

Posted by Agrim Yadav 8 years ago

CBSE > Class 12 > Physics

2 answers

Chikane Jayesh 8 years ago

Due to Bdv. field strength increase and flow of free carriers. also increase

Chikane Jayesh 8 years ago

Because break down voltage depend on the amount of doping.

ANSWER

What is matter wave?

Posted by Piyush K 8 years ago

CBSE > Class 12 > Physics

1 answers

Chikane Jayesh 8 years ago

It is based on wave nature of particle . Show 1. photoelectric effect.2. emission 3.absortion of radiation.

ANSWER

Go gj

Posted by Shrinkhal Raj 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Explain dawisson and germer experiment

Posted by Ritik Patel 8 years ago

CBSE > Class 12 > Physics

2 answers

Chikane Jayesh 8 years ago

By beam of electron towards the Nickel crystal

Chikane Jayesh 8 years ago

Mainly use to find the wave nature of material partial

ANSWER

What are. The imp. Topics in ch. Nuclei ???

Posted by Piyush K 8 years ago

CBSE > Class 12 > Physics

2 answers

Piyush K 8 years ago

Thanks

Chikane Jayesh 8 years ago

1.radioactive displacement law 2.radioactivity decay 3.mass defect 4. binding energy 5. Numerical from. nuclear size. nuclear density

ANSWER

If a proton had a radius R and the charge was uniformly distributed then calculate using bohr theory the ground state energy of a H- atom when R=10 angstorm.

Posted by Mohan Singh Khinda 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Two identical loops ,one of copper and the other of aluminium, are rotated with the same angular speed in the same magnetic field . Compare the induced emf in two coip loops .

Posted by Jyoti Chhimpa 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the si unit of mobility

Posted by Manisha Yadav 8 years ago

CBSE > Class 12 > Physics

6 answers

Ishu Chouhan 8 years ago

Ok

Aisha Grewal 8 years ago

Mobility kai trh ki hoti h...............

Ishu Chouhan 8 years ago

Par mobility ki to koi unit nhi Hoti h ?

Aisha Grewal 8 years ago

Where v is voltage, m is meter, and s is second

Aisha Grewal 8 years ago

M²/vs

Shagun Waraich 8 years ago

m*2 s*-1 N*-1 C

ANSWER

Write one condition under an electric charge does not experience a force in magnetic field

Posted by Minal Jain 8 years ago

CBSE > Class 12 > Physics

2 answers

Shagun Waraich 8 years ago

Bcoz f=qvbsin0= 0

Shagun Waraich 8 years ago

When charge is moving parallel to magnetic field

ANSWER

Is nuclear reactor there in our syllabus?

Posted by Radhika Tyagi 8 years ago

CBSE > Class 12 > Physics

3 answers

Muskaan Gugnani 8 years ago

No

Radhika Tyagi 8 years ago

But it isn't mentioned in the syllabus.... Sm r saying it's there while others r refusing

Ishu Chouhan 8 years ago

I guess yes

ANSWER

Electric field due to point change explain

Posted by Chikane Jayesh 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Obtain the condition for secondary maxima and minima for diffraction

Posted by Shivangi Prasad 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Drive expression for magnetic field intensity for a dipole (1) on its axis (2) on its equatorial

Posted by Yashwant Siddharth 8 years ago

CBSE > Class 12 > Physics

1 answers

Ishu Chouhan 8 years ago

1. Axial:B= 2 KM/r3 2. Equatorial: KM/r3

ANSWER

Define electric field due to a dipole on axial line and equatorial line

Posted by Ajay Singh 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is important in atoms and nuclie chapter in board exams?

Posted by Prabhdeep Chahal 8 years ago

CBSE > Class 12 > Physics

6 answers

Radhika Tyagi 8 years ago

Nuclear fission aur nuclear fusion h syllabus me... Nuclear reactor ni h

Chikane Jayesh 8 years ago

But nuclear fission and fusion is not in syllabus

Ishu Chouhan 8 years ago

Ye chije to fingertips par honi chahiye

Ishu Chouhan 8 years ago

Bohr's postulate, mass defect ,geiggor marsdon experiment, nuclear fission and fusion, impact parameter, soddys law, half life period

Radhika Tyagi 8 years ago

Radioactivity, BE curve, mass defect pe numerical, alpha and beta decay

Aisha Grewal 8 years ago

I also wants to know

ANSWER

Alpha scattering model

Posted by Aryan Kushwah 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derivation of expression for the frequency of radiation emitted

Posted by Ashish Sisodiya 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

what is megnatism?

Posted by Sidhant Rana 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A light of intensity I passes through a polaroid. What is the intensity of transmitted light?

Posted by Nsb Bz 8 years ago

CBSE > Class 12 > Physics

1 answers

Sandhya Raj 8 years ago

It will becom half...

ANSWER

Sky appears dark..in space

Posted by Sandhya Raj 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Any

Posted by Abhishek Malik 8 years ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 8 years ago

No

ANSWER

What are important questions for 5marks

Posted by Letkhohao Haokip 8 years ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 8 years ago

See conceptualphysics videos on you tube

ANSWER

Why sunrise and sunset are abrupt?

Posted by Sandhya Raj 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Radioactive nucleus has a decay constant Lambda is equal to zero point 3465 per day how long would it take the nucleus to Decay 75% of its initial amount

Posted by Vidhi Shukla 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Compare the photowlectric effect on the basis of photon theory and wave theory of light

Posted by Reshma Ranjan 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A wire of 15 ohm resistance is stretched to double it's original length . It is then cut into two equal parts. These parts are then connected in parallel across a 3V battery. Find current.

Posted by Aaina Ojha 8 years ago

CBSE > Class 12 > Physics

2 answers

Praveen Kumar 8 years ago

0.2amp

Aaina Ojha 8 years ago

0.2A is the correct answer or 2A??

ANSWER

Two wires one of copper and other of maganin have some resistance and equal length. Which wire is thickher and why

Posted by Akshay K 8 years ago

CBSE > Class 12 > Physics

1 answers

Aditya Sharma 8 years ago

Manganin wire will be thicker

ANSWER

Why capacitor allows ac but not DC to pass through it? Explain.

Posted by Akash Agarwal 8 years ago

CBSE > Class 12 > Physics

3 answers

Akash Agarwal 8 years ago

Thank you pulkit and PRAveen .

Praveen Kumar 8 years ago

Xc=1/wc=1/2pimiuc, There is no freuency in dc current hence f=0 Then the value of Xc is infinte . Therefore capacitive reactance offer infinte resistance to the circuit and no current flow through the circuit.

Pulkit Goyal 8 years ago

It may be possible as on passing dc ,the capacitor charges to steady state then it behaves as the open switch which not allow current to pass through it. But in ac the polarity changes continuously,so charging and discharging continuously takes place.

ANSWER

From which chapters are the numericals asked? What is the standard of numericals..like formula based ...hots etc ??

Posted by Akash Agarwal 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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