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    • Posted by Robin Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Laksh Chauhan 6 years, 4 months ago

    Acc to it the net electric flux emerging from a closed surface is equal to 1 by avsilon not the charge contained by that surface

    1Thank You

    ANSWER

    • Posted by Vishal Rohan 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Nikita Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 4 months ago

    The mass of electron is small and a small increase in energy of the electron makes the electrons move with a very high speed. As a result of it, the electrons go quickly out of step with oscillating electric field.

    1Thank You

    ANSWER

    • Posted by Nisha Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Řøhăň Řąjpůť ✌️✊ 6 years, 4 months ago

    The school who have registered ur name as a private candidate u will mention that name.

    2Thank You

    ANSWER

    • Posted by King Manan Jain 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Anish Kumar 6 years, 4 months ago

    ac and their numericals is imp on examination point of view

    0Thank You

    ANSWER

    • Posted by Rishi Raj 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 4 months ago

    A Van de Graaff generator is an electrostatic generator. American physicist, Robert J. Van de Graaff was the person behind this invention. It uses a moving belt that accumulates charge on a hollow metal structure. This structure has a design of a globe, placed on the top of a column that is insulating in nature.
    Thus, it creates a very high electric potential in the order of a few million volts. This results in a very large electric field. We use this electric field to accelerate charged particles.

    0Thank You

    ANSWER

    • Posted by Abhay Nath Singh A 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khushi Singh 6 years, 4 months ago

    Q/absolute note

    0Thank You

    ANSWER

    • Posted by Siddharth Rungta 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Robin Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Vikas Semwal 6 years, 4 months ago

    it is stated that the small amount of magnetic field is directly proportional to the the current flow through , sin angle between the point of magnetic field and the wire and inversely proportional to the square of distance between the point and wire

    1Thank You

    Rekha Patidar 6 years, 4 months ago

    In a current carying wire find the magnetic field

    1Thank You

    Lokesh Antil 6 years, 4 months ago

    It gives idea about small magnetic field due to current element

    1Thank You

    ANSWER

    • Posted by Priya Upadhyay 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vikas Semwal 6 years, 4 months ago

    From the value of Vmax and Imax .... As power is= VI

    0Thank You

    ANSWER

    • Posted by Priya Upadhyay 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sanidhya Shrivastava 6 years, 4 months ago

    Since, V=Vo sin wt, So, Vo is the peak value of voltage here.

    0Thank You

    ANSWER

    • Posted by Seema Bhoi 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 4 answers

    Khuskaran Sidhu 6 years, 4 months ago

    V=IR

    0Thank You

    Gagan Singh 6 years, 4 months ago

    V=IR

    1Thank You

    Ridhi Goyal 6 years, 4 months ago

    V=IR V=potential difference I=Current R=Resistance constant

    0Thank You

    Dev Ahlawat 6 years, 4 months ago

    It is defined as current flowing through a conductor is directly proportional to the potential difference applied across it,provides physical conditions remains constant.

    1Thank You

    ANSWER

    • Posted by Navraj Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Dev Ahlawat 6 years, 4 months ago

    The energy band diagram for a conductor is such that either the conduction band is partially filled with electrons or the conduction and valence band partly overlap each other. No energy gap. 2) in insulators energy band diagram, the valence band is completely filled, the conduction band is empty and energy gap is quite large. 3) in semiconductor energy band diagram, the valence band is totally filled and the conduction band is empty but the energy gap between conduction band and valence band is quite small( less than 3eV).

    1Thank You

    ANSWER

    • Posted by Shakti Pal 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sia ? 6 years, 4 months ago

    Diffraction is a physics concept. Diffraction occurs when waves bend around small obstacles, or when waves spread out after they pass through small openings. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as light that the eye can see.

    1Thank You

    ANSWER

    • Posted by Jayesh Jd 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Entertain Zone 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sanidhya Shrivastava 6 years, 4 months ago

    When light rays travel from denser medium to rarer medium than the angle of incidence of denser medium for which the angle of refraction of rarer medium is 90°, as a result, light rays bounce back to the same medium from which it is coming ,i.e., in denser medium, and this is called a Critical Angle.

    4Thank You

    ANSWER

    • Posted by Entertain Zone 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 4 answers

    Khuskaran Sidhu 6 years, 4 months ago

    In electical trains (in brakes to stop the train very quickly)

    0Thank You

    Rekha Patidar 6 years, 4 months ago

    Eddy current used in trains

    1Thank You

    Dev Ahlawat 6 years, 4 months ago

    Eddy current are the current induced in the bulk(heavy) pieces of conductor when the magnetic flux linked with the conductor changes.

    1Thank You

    Vikas Semwal 6 years, 4 months ago

    when current passes through the bulk of any conductor instead of their surface then the current induce in such a way so that it produces the loop inside the bulb of conductor this loop produces heat and such a loop are called Eddy current

    1Thank You

    ANSWER

    • Posted by Harshit Joshi 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Ron Vineetahuja 6 years, 4 months ago

    Nm

    0Thank You

    Navraj Singh 6 years, 4 months ago

    Tata

    1Thank You

    Yogita Ingle 6 years, 4 months ago

    Torque define as the rotational equivalent of linear force . SI unit of torque is N⋅m .

    2Thank You

    ANSWER

    • Posted by Shikha Maurya 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Nehil Bhatnagar 6 years, 4 months ago

    Net par dekh lo dhor

    2Thank You

    Harshit Joshi 6 years, 4 months ago

    Answer he = ptanee

    1Thank You

    ANSWER

    • Posted by Krishna Jasawat 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Ron Vineetahuja 6 years, 4 months ago

    Communication systems and half of semiconductors ( topics after solar cell) are deleted

    1Thank You

    Sia ? 6 years, 4 months ago

    You can check syllabus in mycbseguide app of each subject in syllabus last page contains exam design which will help you.

    1Thank You

    ANSWER

    • Posted by Jai Kumar Jethwani 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khushi Singh 6 years, 4 months ago

    Magnetic lines sre those lines which are produced by a magnet while the force experienced by magnetic lines is known as magnetic lines of force.

    0Thank You

    ANSWER

    • Posted by Aarif Khan 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 4 answers

    Ron Vineetahuja 6 years, 4 months ago

    No

    0Thank You

    Vikas Semwal 6 years, 4 months ago

    No

    0Thank You

    Entertain Zone 6 years, 4 months ago

    No

    0Thank You

    Khushi Singh 6 years, 4 months ago

    Yes

    0Thank You

    ANSWER

    • Posted by Aarif Khan 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Arisha Ashraf 6 years, 4 months ago

    Heavy water captures less neutrons than normal water.Heavy water is basically used as a moderator in nuclear reactor ,to slow down the neutrons so that they are captured and become effective to bring about the fission reaction.

    0Thank You

    ANSWER

    • Posted by Divya Singh 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Rekha Patidar 6 years, 4 months ago

    Vd=eE/m to bar

    0Thank You

    ANSWER

    • Posted by Rahul Devrani 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Ron Vineetahuja 6 years, 4 months ago

    Topic after solar cell like transistors,amplifiers and logic gates are deleted. Chapter communication system is delete

    0Thank You

    Vikas Semwal 6 years, 4 months ago

    Ray optic added.... Logic gate, transistor are main topic deleted

    1Thank You

    Mahesh Kumar 6 years, 4 months ago

    Syafzj

    2Thank You

    ANSWER

    • Posted by Deepak Kumar 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Deepak Kumar 6 years, 4 months ago

    I haven't studied phys then how test will worth in preparation?

    0Thank You

    Md Mahboob Arzoo 6 years, 4 months ago

    After december give test

    0Thank You

    Md Mahboob Arzoo 6 years, 4 months ago

    Take rest

    0Thank You

    ANSWER

    • Posted by Banty Kumar 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sanjay Kumar 6 years, 4 months ago

    Electrostatic Force between them = 1/4πE. X q^2/r^2

    1Thank You

    ANSWER

    • Posted by Shivam Saksham 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Satyam Kumar 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Shikha Maurya 6 years, 4 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Shikha Maurya 6 years, 4 months ago

    But what is phase?

    0Thank You

    Yogita Ingle 6 years, 4 months ago

    Phase difference (measured in radians): It is the difference in phase of two waves of same frequency.  It is represented by ??.

    In the above diagram, the blue wave leads the red wave by a phase difference of pi/2.

    At time t = 0, the blue wave has displacement equal to 0, while that of red wave has negative displacement (-A).

    At pi/2, the blue wave has maximum positive displacement(+A), while that of red wave is zero.

    Hence Blue wave is leading by a phase difference of pi/2 and path difference of (lambda) ? /4.

    Example:

    Suppose two horses are running in a circular track with same speed and in same direction but their starting point is different. They will cross the same point at different times but there will be constant difference in time, each time they cross the point. Thus we can say that they are moving with constant phase difference. This is analogous to the two waves travelling with same frequency with some phase difference i.e. their starting point is different.

    1Thank You

    ANSWER

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