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

So, in short In chemistry - solid state & group 15 is removed In phys- communications system & transistor, amplifier, logical gates is removed In maths- binomial distribution & binary operation is removed Is this right or some addition or reduction required in it?

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Deepak Kumar 5 years, 7 months ago

Thanks for the info

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Tushar Bhola 5 years, 7 months ago

Abe pagal hai kya addition and condensation tune pada hi nhi tho tune usse delete hi kar diya vo hai syllabus mai

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Muskaan Vig 5 years, 7 months ago

Addition and condensation polymerisation....topics are in our syllabus.

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Sohan .G 5 years, 7 months ago

Chapter 1 (Solid state) has been deleted • ‘Group-15’ deleted from p-block elements • Classification: natural and synthetic, methods of polymerization (addition and condensation) is deleted from Polymers • Design of Question Paper changed (20 Marks Objective Questions have been added and the total number of questions has increased to 37 from 27) Topics ‘binary operations’ (from unit relations and functions) and ‘repeated independent (Bernoulli) trials and binomials distribution’ (from unit Probability) have been deleted • Chapterwise marks changed .Internal assessment of 20 marks has been added • Design of Question Paper changed (20 Marks Objective Questions have been added and the total number of questions has increased to 36 from 29) .topics junction transistor, transistor action, characteristics of a transistor and transistor as an amplifier (common emitter configuration), basic idea of analog and digital signals, logic gates (OR, AND, NOT, NAND and NOR) have been deleted from chapter 14 • Chapter 15 (Communication System) has been deleted • Design of Question Paper changed (20 Marks Objective Questions have been added and the total number of questions has increased to 34 from 27)

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Ishika Soni 5 years, 7 months ago

in maths binomial distribution is deleted from probablity

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Hasan Azam 5 years, 7 months ago

In chemistry,group 15 is deleted i.e nitrogen family from p block elements

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Hasan Azam 5 years, 7 months ago

I am a PCB student so i dont know about maths but in physics(eye in ray optics and transistor,amplifier of semiconductor and communication system os deletes)

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Factors affecting lateral shift and natural shift

Posted by Sam Adam 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Sohan .G 5 years, 7 months ago

Lateral shift depends upon: (i) the increase in the thickness of the glass slab. (ii) the increase in the value of the angle of incidence. (iii)the increase in the value of refractive index of the slab. Normal shift depends upon: (i) the real depth of the object or the thickness of the refracting medium. (ii) the refractive index of the denser medium. The higher the value of(lamda) greater is the Apparent shift (d).

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Two long parallel wires each carrying a current of 1A in the same direction, are placed 1m apart. The force of attraction between them is

Posted by Amit Raj 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Ritwik Choudhary 5 years, 7 months ago

2x10^-7 N/m

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ANSWER

A neutron strikes a nucleus of 5 10B and emits an alpha particle. Write down the nuclear reaction for it.

Posted by Rahul Saini 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

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Eletric field due to charged solid sphere derivation

Posted by Renu Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

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Gsgsddfg

Posted by lily****@***** 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Aku❤️❤️ ? 5 years, 7 months ago

Kskkekkskekdd

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How to prepare for mcqs

Posted by Ashish Kumar 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Param Dhingra 5 years, 7 months ago

Write down basic concepts and revise them again and again. I followed this strategy in my pre boards and I scored 19 out of 20 in one markers?

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Arisha Ashraf 5 years, 7 months ago

Prefer to ncert for that

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ANSWER

What is the magnitude of pressure that is applied by jhonny sins in his arcade mania of holes

Posted by Md Zahid Hussain 5 years, 7 months ago

CBSE > Class 12 > Physics

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Necrt class 12 ray optics ka last question hai

Posted by Govind Narayan Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

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Please anybody tell me that how to prepare 2book of physics ,,,because i did not know but i didi not like to read it ,,,can i only read previous years question for this????plz

Posted by Abhay Mishra 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Vinay Gautam 5 years, 7 months ago

Ya u can plus solve or read some solved sample papers

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Sample paper

Posted by Abhishek Sanpla 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

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State kirchoff's law

Posted by Agnibha Adhikari 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Sharma Sk 5 years, 7 months ago

two laws are there 1 law:junction law accordind to which total incoming current is equal to total outgoing current 2 law: sum of the emf is equal to sum of multiple of current and ist corresponding resistance

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Pooja Rawat 5 years, 7 months ago

There are two law

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Numericals

Posted by Danish Rangrezz 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Param Dhingra 5 years, 7 months ago

Try solving previous year. Don't try to solve so many of same type

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ANSWER

Describe a simple experiment to show that the polarity of emf induced in a coil is always such that it tends to produce a current which opposes the change of magnetic flux that produces it

Posted by Josna Mary Thomas Thomas 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Param Dhingra 5 years, 7 months ago

Proof of lenz law

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Anyone having some doubts can ask me on instagram #raonishant123

Posted by Tanvi Yadav 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Tanvi Yadav 5 years, 7 months ago

Bhtt yaad aari apna baap ki

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Vinay Gautam 5 years, 7 months ago

Tu bda n einstein h

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ANSWER

Given the mass of iron nucleus as 55.85u and A = 56,find the nuclear density?

Posted by Keerthana Naveen 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Param Dhingra 5 years, 7 months ago

Constant (might be given in ques paper)

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Shefu ??????? 5 years, 7 months ago

Konsa formula use kiya ha apna??

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Neha Choudhary 5 years, 7 months ago

1.7×10^17

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ANSWER

What is Kirchhoff's law's

Posted by Anaya Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

7 answers

Roshan Shukla 5 years, 7 months ago

KVL (LOOP LAW) states that the sum of potential difference across a loop is zero...

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Muskaan Vig 5 years, 7 months ago

Kirchoff's first law(Junction law) states that current entering a junction is equal to current leaving the junction.....

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Tanvi Yadav 5 years, 7 months ago

Because the kirchoff's law is very long so I can explain it properly on notebook and in this app i can't send you image of that.

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Anaya Singh 5 years, 7 months ago

Why ! What is the problem having to you in telling here

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Tanvi Yadav 5 years, 7 months ago

You can ask me on instagram #raonishant123

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Anaya Singh 5 years, 7 months ago

I know but having some confusion

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Tanvi Yadav 5 years, 7 months ago

Aapko nhi pta?

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ANSWER

Kya gaits h syllabus m

Posted by Santy Baralu 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Meghna Sharma 5 years, 7 months ago

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Bending a wari does not affect electrical resistance why

Posted by Alice Abujam 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Tamanna Sharma 5 years, 7 months ago

It's not wari, it's wire and seconldy wire ko bend karne se area and length both are not increasing or decreasing so resistance is also same. (RESISTIVITY AND TEMPERATURE ALSO REMAIN CONSTANT),,,,if by bending we done length is half or double and anyother then it definitely affect the resistance and same for area.

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Two radiation of frequency v1 and v2 (v2<v1) and havine same intensity incident on a photosensitive surface. Explain in which case more number of electrons will be emitted?

Posted by Syed Zuhed 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Is anyone up?

Posted by Khushi Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Khushi Singh 5 years, 7 months ago

Yaar job application format bata do pls

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A ? 5 years, 7 months ago

What???

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A) draw a ray diagram for final image formed at distance of distinct vision by compound microscope and write expression for its magnifying power. B) an angular magnification of 30x is desired for a compound microscope using as an objective of focal length 1.25 cm and eyepiece of focal length 5 cm how will you set up the compound microscope Above two questions are given for 5 marks...shuld I write whole derivation or just expression in final exam

Posted by Priyanshi Maurya 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Shefu ??????? 5 years, 7 months ago

(-Vo/uo)(1+ d/fe)

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Shefu ??????? 5 years, 7 months ago

(1+d/f)

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Tamanna Sharma 5 years, 7 months ago

You have to derive it with the help of diagram

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The electric field components in the following figure are Ex = αx, Ey = 0, Ez= 0; in which α = 400 N/C m. Calculate (i) the electric flux through the cube, and (ii) the charge within the cube assume that a = 0.1m

Posted by Ariya A 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Pooja Rawat 5 years, 7 months ago

Ncert example h ye samaj nhi aaya kya apko

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Velocity selector?

Posted by Vikash Prajapati 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Muskaan Vig 5 years, 7 months ago

Region in which uniform electric and magnetic fields are present and are perpendicular to each other....some charged particles go through them without any deflection but some get deflected this helps in selecting a particular charge of particular velocity..

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Srushti Dhanmane 5 years, 7 months ago

V = E/B

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Pooja Rawat 5 years, 7 months ago

It is a device which accelerate the charge particle

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