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

The phase difference is the difference in the phase angle of the two waves. Path difference is the difference in the path traversed by the two waves. The relation between phase difference and path difference is direct. They are directly proportional to each other.

1Thank You

ANSWER

X=2×53divide by 4

Posted by Arthi R 3 years ago

CBSE > Class 12 > Physics

1 answers

Raunak Gupta 3 years ago

26.5

0Thank You

ANSWER

lens makers formula derivation

Posted by Rebecca Joselyn 3 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Hsisid

Posted by Shuaib Xidd 3 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the difference between a.c and d.c

Posted by Pihu Agarwal 3 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Preeti Dabral 3 years, 1 month ago

A.C. generator has slip rings while D.C. generator has a commutator.

1Thank You

Arpit Mathan 3 years ago

Which change according to time is called AC. And which Does not Change is called dc

0Thank You

Dinesh Singh 3 years ago

AC is alternating current which reverses it's direction after regular interval of time whereas DC is direct current which continues to flow in one direction. The magnitude of dc may vary or may remain constant but it's direction of flow remains same. The number of times the ac changes it's direction in one second is called its frequency, in India the frequency of ac is 50 Hz

3Thank You

ANSWER

Project file on half wave rectifier

Posted by Astha Jaiswal 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Kashu Verma 3 years ago

Hey.. friend Google it u can find there...

0Thank You

ANSWER

What is meant by doping of an intrinisic semiconductor name two type of atoms for doping of ge

Posted by Ratikanta Rout 3 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Avinash Kannaujiya 3 years, 1 month ago

It is right

0Thank You

Harsimran Kaura 3 years, 1 month ago

Doping means adding some impurity atoms in intrinsic semiconductor to increase its conductivity... germanium can be doped by adding both P type (trivalent) or N type (pentavalent) impurities

2Thank You

ANSWER

How to pass in preboard

Posted by Abhishek Yadav Ji 3 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Kashish Dawar 3 years ago

Pdke

0Thank You

Manish Singh 3 years ago

0Thank You

Manish Singh 3 years ago

foo

0Thank You

Dhwani Agarwal 3 years, 1 month ago

By studying

0Thank You

Gaurav Kumar 3 years, 1 month ago

Study kar ke

0Thank You

ANSWER

Do we have to solve physics pyqs or latest sample paper

Posted by Nitin Khare 3 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Kashu Verma 3 years ago

U can choose together with and arihant they are very helpful

0Thank You

Kashish Dawar 3 years ago

Prefer arihant sample paper of last 10years

0Thank You

Harsimran Kaura 3 years, 1 month ago

Both

0Thank You

Somya Sachi Mishra 3 years, 1 month ago

3Thank You

ANSWER

How to complete physics practical without writing?

Posted by Chandan Kr 3 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Manish Singh 2 years, 11 months ago

😑😑😑

0Thank You

Himanshi Sharma 3 years ago

Do it as a ppt

0Thank You

Aamir Usmani 3 years, 1 month ago

Just hand him(i.e physics teacher) your blank notes

1Thank You

ANSWER

Physic practical

Posted by Pankaj Kumar 3 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Practical find cut in voltage of red green and blue light

Posted by Honey Kumar Singh 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Virat Singh 3 years, 1 month ago

Red light

0Thank You

ANSWER

How to prepare for physics good

Posted by Nitin Kumar 3 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Prashant Sher Yadavanshi 3 years, 1 month ago

😂😂😂

3Thank You

Gungun Bhagat 3 years, 1 month ago

By studing instead of using phn for searching how to do it

5Thank You

ANSWER

What will happen of white light is used in YDSE

Posted by Shailja Singh 3 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Harsimran Kaura 3 years, 1 month ago

If white light is used in YDSE no interference will be there and different colors form their own fringes being red the widest and violet the narrowest

1Thank You

Prashant Sher Yadavanshi 3 years, 1 month ago

Simple answer is fringe width will increase

0Thank You

Aman Meena 3 years, 1 month ago

Because white.is combination of all seven colours so when we pass white light from narrow slits it will give a better pattern fringes

0Thank You

ANSWER

Fun

Posted by Goyal Pranav 3 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Raj Yadav 2 years, 11 months ago

1min =se 0

0Thank You

Prajwal Sharma 3 years, 1 month ago

Having something which you can do with your own desire and enjoying the work

0Thank You

ANSWER

Main application of wheastone bride with mathematical expression

Posted by Tania Debnath 3 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Anjan Karthi 3 years, 1 month ago

Balanced wheatstone bridge used to calculate unknown resistance in the presence of a known resistance, with the help of metre bridge apparatus. The expression is P/Q = R/S where P and Q are resistances on the same arm of the combination but still separate and so are R and S.

1Thank You

Prashant Sher Yadavanshi 3 years, 1 month ago

😂😂😂😂bride

1Thank You

ANSWER

Superposition principal

Posted by Nitin Bhardwaj 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sri . 3 years, 1 month ago

The principle of superposition states that every charge in space creates an electric field at point independent of the presence of other charges in that medium. The resultant electric field is a vector sum of the electric field due to individual charges.

6Thank You

ANSWER

When electrons drift from lower to higher potential, does it means that all the free electron of the metal are moving in the same direction?

Posted by Saurabh Kumar 3 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Rshi Kumar 3 years, 1 month ago

No because some electrons have different potential .

1Thank You

Sri . 3 years, 1 month ago

When electron drift in a metal from lower to higher potential all the free electrons of the metal do not move in the same direction. When electric field is applied, the net drift of the electrons is from lower to higher potential.

2Thank You

Anjan Karthi 3 years, 1 month ago

No, all the free electrons do not move in the same direction. The net movement of the electron is from the lower to the higher potential. Some electrons may move in higher potential to lower potential, may not move or may move in any other direction and although all electrons do not flow in the same direction, a large fraction of the electrons flows from the lower potential to the higher potential. There is a very small fraction of electrons that do not flow in that direction. Hence the net movement will always be from lower potential to the higher potential.

1Thank You

ANSWER

Basic assumptions of Rutherford atom model

Posted by Gaurav Singh 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sri . 3 years, 1 month ago

Rutherford's model proposed that the negatively charged electrons surround the nucleus of an atom. He also claimed that the electrons surrounding the nucleus revolve around it with very high speed in circular paths. He named these circular paths as orbits.

0Thank You

ANSWER

Electroscope working

Posted by Sai Kedar 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Abhishek Maurya 3 years, 1 month ago

D third lduoxioy sa udisuizudoyxi

0Thank You

ANSWER

The refractive index of first medium is 1.25 and focal length of convex lens is 20cm if the radius of curvature first side of lens is 20cm and second radius of curvature is 10cm then find the refractive index of other medium

Posted by Deepu Kumar Yadav 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 1 month ago

According to lens makers' formula, 1/f = (n 21 - 1) 1/R1 - 1/R2. n 21 - 1 = 1/f ( R1 R2 / R1 + R2). n 21 - 1 = 1/20 (20 × 10 / 30). n 21 - 1 = 1/20 (20/3) = 1/3. n 21 = 1 + 1/3 = 4/3. n2/n1 = 4/3. n2 / 1.25 = 4/3. Therefore, the refractive index of the second medium n2 = 4 × 1.25 / 3 = 5/3 = 1.67. //

3Thank You

ANSWER

Why bohrs theory of atom failed??

Posted by Uday Shukla 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 1 month ago

1) Couldn't explain Zeeman and Stark effects (Variations in fine atomic spectra with alternating electric and magnetic fields). 2) Couldn't explain the existence of fine thin spectral lines in the atomic spectra. 3) The theory was limited to hydrogen-like species. 4) Later, discovered that electrons revolved not around circular energy states, but across a fixed range of energy levels around atoms (called subshells or orbitals).

0Thank You

ANSWER

Which lens is converging

Posted by Adarsh Kumar 3 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Sri . 3 years, 1 month ago

Converging lens is convex lens whereas diverging lens is a concave lens. Converging lens converge and focus the light ray to meet at a single point whereas diverging lens, diverge the light falling on its surface and not meet at a single point

0Thank You

Gulshan Kumar 3 years, 1 month ago

Concave lens

1Thank You

Anjan Karthi 3 years, 1 month ago

Convex lens when the surrounding medium is optically rarer than the lens itself, and concave lens is the surrounding medium is optically denser than the material of the lens.

1Thank You

Uday Shukla 3 years, 1 month ago

Convex lens

0Thank You

ANSWER

Is it true sini /sin r is equal to 1by refractive index

Posted by Payal Verma 3 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 1 month ago

sin i / sin r = 1/Relative refractive index of medium 1(from where the light came) with respect to medium 2 (to which the light enters on leaving medium 1)

0Thank You

ANSWER

Ampere circutial law derivation

Posted by Gunnjanaa Singhh 3 years, 1 month ago

CBSE > Class 12 > Physics