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

Eye, its defect and correction, van de graff, transistor as oscillator,isotones, isobars,transistor as switch, isotopes,image formation and accomodation

2Thank You

ANSWER

Book 1 derivative is necessary or book2

Posted by Kristina Sarang 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Dēëp@K Kûmår 7 years, 6 months ago

Both book

2Thank You

Namami Shukla 7 years, 6 months ago

You cant predict that cbse is going to give derivations from which part of the book so both are important .....

3Thank You

ANSWER

Madulation index

Posted by Ravi Yadsv 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Aditi Roy 7 years, 6 months ago

It is the ratio of Change in amplitude of carrier wave to the amplitude of carrier wave .

0Thank You

ANSWER

Is Eye & Vant de graff generator deleted from cbse syllabus? Please give answer ???

Posted by Rahul Agrawal 7 years, 6 months ago

CBSE > Class 12 > Physics

4 answers

Rahul Agrawal 7 years, 6 months ago

1Thank You

Jass Mangla 7 years, 6 months ago

Yup

0Thank You

Vinay Pandey 7 years, 6 months ago

These r deleted topics - human eye and van de Graff generator

1Thank You

Namami Shukla 7 years, 6 months ago

Yes

1Thank You

ANSWER

Syllabus of xm

Posted by Kristina Sarang 7 years, 6 months ago

CBSE > Class 12 > Physics

9 answers

Namami Shukla 7 years, 6 months ago

Okk☺️ All the best???

1Thank You

Kristina Sarang 7 years, 6 months ago

Manipur

0Thank You

Namami Shukla 7 years, 6 months ago

Yes Kristina from which region you are....

0Thank You

Jass Mangla 7 years, 6 months ago

Outside delhi from where u r ???

0Thank You

Namami Shukla 7 years, 6 months ago

Drift velocity & relaxation time, kirchhoff's law working and basics if all instruments especially cyclotron, and optical instruments derivation of mutual induction, energy level diagram ,debroglie hypothesis, communication sysytem .......

2Thank You

Kristina Sarang 7 years, 6 months ago

Can anyone tell me some imp topics outside delhi ka

0Thank You

Kristina Sarang 7 years, 6 months ago

Class12

0Thank You

Kristina Sarang 7 years, 6 months ago

Physics

0Thank You

Namami Shukla 7 years, 6 months ago

What???? Which exam

0Thank You

ANSWER

Cyclotron , interference in slits, half wave rectifier & full wave rectifier, zener diode? In these topics I have lots of confusion plz help me

Posted by Trapti Gupta 7 years, 6 months ago

CBSE > Class 12 > Physics

8 answers

Trapti Gupta 7 years, 6 months ago

Thanks

0Thank You

Trapti Gupta 7 years, 6 months ago

But mere pas Sl arora nahi h yrr

0Thank You

Aditi Roy 7 years, 6 months ago

Thanks?

0Thank You

Jass Mangla 7 years, 6 months ago

Yes Aditi's suggestion is best

0Thank You

Paras Gupta 7 years, 6 months ago

Read sl. Arora all these topic easily explained

1Thank You

Rounak Singh 7 years, 6 months ago

Hiiii

0Thank You

Namami Shukla 7 years, 6 months ago

YA.....Aditi is right.... Take help of the videos

1Thank You

Aditi Roy 7 years, 6 months ago

U should watch the video of these topics And videos are given in this app .try it ?

3Thank You

ANSWER

Coherent sources

Posted by Rahul Sharma 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Rachit Sharma 7 years, 6 months ago

Sources which have same phase difference and frequency

1Thank You

ANSWER

Explain how Biot Savarts law enables one to express the Ampere's circuital law in the integral form , viz . Line integral of B.dl = uo.I where I is the total current passing through the surface . (Delhi 2015).

Posted by Aayush Sethiya 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define conductivity of conductor?

Posted by Utkarsh Raghav 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Namami Shukla 7 years, 6 months ago

Reciprocal of resistivity

0Thank You

ANSWER

why is eyepiece of telescope of short focal length,while objective is of large focal length? why

Posted by Aryan Patel 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Sneha Dobriyal 7 years, 6 months ago

In telescope the objective lens focus distant object wheras in microscope it focus nearby objects

1Thank You

Sukhpreet Sandhu 7 years, 6 months ago

Sandhu

0Thank You

ANSWER

Sabki is baat kitni percentage ki expectations hai ...???????

Posted by Jass Mangla 7 years, 6 months ago

CBSE > Class 12 > Physics

3 answers

Jass Mangla 7 years, 6 months ago

Wah Ashi expectations hai

1Thank You

Piyush K 7 years, 6 months ago

99.9

1Thank You

Unique Person Arupitw 7 years, 6 months ago

Above 95%

1Thank You

ANSWER

Guys what to do for phy exams during these holidays I am too confuse about it Plzzz help

Posted by Muskaan Gugnani 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 7 years, 6 months ago

First calm down and donot take stress bs jitna kro Ashe se kro

1Thank You

ANSWER

Show that ideal voltmeter has infinite resistance but ammetr has zero

Posted by Muskaan Gugnani 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A hollow sphere of radius 5cm is charged such that the potential on its surface is 10 V . What is the potential at the center of the sphere.?

Posted by Yash Mure 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Kushagra Srivastava 7 years, 6 months ago

10V

0Thank You

ANSWER

Two charges q1 and q2 are placed at (0,0,d) & (0,0,-d) respectively. Find the locus of point where the potential is 0.

Posted by Ritya Kumari 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Difference between intrinsic and extrinsic semiconductor

Posted by Afsa Kaleem 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Namami Shukla 7 years, 6 months ago

Intrinsic semiconductors are pure semiconductors while extrinsic semiconductors are doped semiconductors.........extrinsic semiconductors can be classified as n type i.e doped with pentavalent impurities and p type i.e. doped with trivalent impurities

1Thank You

Kushagra Srivastava 7 years, 6 months ago

intrinsic means pure Si or Ge whereas extrinsic means doped Si or Ge

0Thank You

ANSWER

Newton 2nd law

Posted by Punit Diwakar 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Aditi Roy 7 years, 6 months ago

Rate of change in momentum of a body is directly proportional to the external force applied on the body.

0Thank You

Radhika Tyagi 7 years, 6 months ago

F=ma

2Thank You

ANSWER

In ch 12 what is energy level diagram

Posted by Yug Singhal 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Yug Singhal 7 years, 6 months ago

Thanks

0Thank You

Namami Shukla 7 years, 6 months ago

Energy level doahram basically tells us about the ionisation energy of hydrogen at different values of n ...it tells us about the energy of the atom at different stages........ according to this as the excitation of hydrogen atom increases the value of minimum energy required to free the electron from the excited atom decreases

2Thank You

ANSWER

What is Boltzmann constant

Posted by Rahul Singh 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Aditi Roy 7 years, 6 months ago

K =1.38 × 10^minus 23 metre^2 kg sec.^-2 kelvin^-1

0Thank You

ANSWER

What is emission and absorption spectrum

Posted by Namami Shukla 7 years, 6 months ago

CBSE > Class 12 > Physics

5 answers

Hitesh Kumar 7 years, 6 months ago

NP?? lol

0Thank You

Namami Shukla 7 years, 6 months ago

Thnx??

0Thank You

Hitesh Kumar 7 years, 6 months ago

Then refer Quora??

0Thank You

Namami Shukla 7 years, 6 months ago

In ncert it is clearly mentioned about emission spectrum but not about absorption spectrum?

0Thank You

Priya Prakash S 7 years, 6 months ago

Refer ncert

1Thank You

ANSWER

Write the effect of dielectric on various parameters Q,E,V,C&U when battery discharged from the capacitor or when battery kept constant across the capacitor

Posted by Prachi Mishra 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What happens to l length of wire in meter brigde when (1) R known resistance is increased. (2) S. Unknown resistance is decreased . (3) l length of wire is doubled .

Posted by Anay Patidar 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A deutron and a proton moving with same speed enter the magnetic field region at right angles to the direction of field . show that there trajectory in magnetic field

Posted by Dinesh Badgujar 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Dinesh Badgujar 7 years, 6 months ago

Karne ka tarika

1Thank You

Piyush K 7 years, 6 months ago

Bhai path khse dekhyoon

3Thank You

ANSWER

What is shell theorem of potential???

Posted by Naman Patidar 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 7 years, 6 months ago

Jo spherical shell ki di Hui hai or 3 points contain krti hai p point outside the surface ,on the surface and inside the surface unit 1 ki check out u will find out

2Thank You

ANSWER

From which chapters are the 5 mark questions are coming this year in cbse ?

Posted by Aman Abbas 7 years, 6 months ago

CBSE > Class 12 > Physics