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    • Posted by Ch Priyanshu 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Akshat Mishra 6 years, 10 months ago

    The ability of a substance to store electrical energy in an electric field

    3Thank You

    ANSWER

    • Posted by Ashwini Kumar Mohanty 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Raunak Himmatramka 6 years, 10 months ago

    Yes these come but if your answer is near then you will get marks

    1Thank You

    H!Mαη$Hμ Ұαδαυ ✔️ 6 years, 10 months ago

    From which chapters..

    1Thank You

    ANSWER

    • Posted by Akshat Mishra 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Akshat Mishra 6 years, 10 months ago

    Answer the question

    0Thank You

    Aman Singh 6 years, 10 months ago

    Yes

    2Thank You

    ANSWER

    • Posted by Anvesha Verma 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Megha Rathore 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Danish Raza 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vicky . 6 years, 10 months ago

    High penetrating power

    0Thank You

    ANSWER

    • Posted by Saurav Raj 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Yogita Ingle 6 years, 10 months ago

    A Zener diode is a heavily doped silicon crystal diode which allows current to flow in the forward direction in the same manner as an ideal diode. It also permits the current to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. Breakdown voltage is also known as Zener knee voltage.

    4Thank You

    Anuj Sharma 6 years, 10 months ago

    Zener diode is a P-N JUNCTION diode which is heavily doped on both sides and used in reverse bias state

    0Thank You

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    • Posted by Ram Babu Prajapati 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Abhishek Rai 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Bharti Bharti 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Yogita Ingle 6 years, 10 months ago

    A space wave travels in a straight line from transmitting antenna to the receiving antenna. Space waves are used for line-of-sight (LOS) communication as well as satellite communication. At frequencies >50 MHz, communication is essentially limited to line-of-sight paths because waves cannot travel along earths surface as they get absorbed by earth,  so propagation cannot be like ground wave propagation. Likewise propagation cannot be like sky waves as they are not reflected by ionosphere.
    At these frequencies, the antennas are relatively smaller and can be placed at heights of many wavelengths above the ground. Because of line-of-sight nature of propagation, direct waves get blocked at some point by the curvature of the earth. If the signal is to be received beyond the horizon then the receiving antenna must be high enough to intercept the line-of-sight waves.

    1Thank You

    Anuj Sharma 6 years, 10 months ago

    It is a mode of transmission of signals having frequency >2 MHZ using reflection through troposphere

    0Thank You

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    • Posted by Bharti Bharti 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    Transducer is a device used for converting one form of energy into another form. Microphone is a transducer because it converts sound energy into electrical energy.
    Repeater is a device which picks up electromagnetic signal, amplifies it and then again transmits it to the receiver. It is used when transmitted signal is attenuated beyond a certain limit or distance between a transmitter and a receiver is very large.It is used in the communication system.

    1Thank You

    ANSWER

    • Posted by Suman Rani 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Sandeep Kumar 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Gaurav Seth 6 years, 10 months ago

    The phenomena showing quantum nature of electromagnetic radiations is Photoelectric effect.

    It is a effect when electron is emitted when light shines on a material. Such electrons are called photo electrons.

    2Thank You

    ANSWER

    • Posted by Abhay Jha 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Raunak Himmatramka 6 years, 10 months ago

    It is simply energy conservation.

    0Thank You

    Pragya Gupta 6 years, 10 months ago

    Current and voltag

    0Thank You

    ANSWER

    • Posted by Tanu Yadav 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Binay Gandhi 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Ritik Kushwaha 6 years, 10 months ago

    By connecting high resistsnce to sereis to the coil. R=v/Ig- G

    0Thank You

    ANSWER

    • Posted by Rupali Agrawal 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Vikas Goyal 6 years, 10 months ago

    Ni

    1Thank You

    Aman Pandey 6 years, 10 months ago

    No

    2Thank You

    ANSWER

    • Posted by Abhinav Singh Narayan 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Manish Barwa 6 years, 10 months ago

    There are two rule of Kirchoff are followed: (1)the Kirchoff first law is also known as KCL law it is also known as junction rule. So junction rule is-at any junction of current element the sum of currents entering the junction must equal the sum of current leaving it. (2)-The Kirchoff second law is also known as KVL law It is also known as Loop rule-In a closed loop the algebraic sum of the emf is equal to the algebric sum of the product of resistance and the respective current them..

    1Thank You

    ANSWER

    • Posted by Abhishek Rai 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 4 answers

    Akshat Mishra 6 years, 10 months ago

    Yes, derivation will involve

    1Thank You

    Abhishek Rai 6 years, 10 months ago

    2019 in sample paper 1or 2 derivation involve

    0Thank You

    Kuldeep ?? 6 years, 10 months ago

    Yes derivation are also important.if you do only derivation and theory you can score better.numerical come only of 15 marks.

    5Thank You

    Priyanka P 6 years, 10 months ago

    Only 1-2 derivation will involve

    2Thank You

    ANSWER

    • Posted by Aman Goyal 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Akshat Mishra 6 years, 10 months ago

    For concave lens formula (m=v/u=f-v/f =f/f+u)

    1Thank You

    ANSWER

    • Posted by Shashikala Pandey 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sneha Bansal 6 years, 10 months ago

    Suitable models for physics are from semiconductor and electronics eg. LED.,rectifier ...

    1Thank You

    ANSWER

    • Posted by Aman Teotia 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Manish Rawat 6 years, 10 months ago

    c=1\√u(not)×e(not)

    1Thank You

    ANSWER

    • Posted by Chandrakant Lolasure 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Suraj Upadhyay 6 years, 10 months ago

    Coulomb is right

    2Thank You

    Hema Bisht 6 years, 10 months ago

    It isnot Coulamb its Coulomb (C)

    2Thank You

    Akarsh Kumar 6 years, 10 months ago

    Coulamb

    0Thank You

    ANSWER

    • Posted by Krishna Soni 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Akarsh Kumar 6 years, 10 months ago

    Because it is possible to make all types of other gatesv

    3Thank You

    ANSWER

    • Posted by Mahi Jain 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    The pole strength will be the strength of each pole means the capacity of each pole ( north and south pole ) to attract any ferromagnetic substances  and magnetic moment will be when u will multiply the pole strength with the length of the magnet . 
    So, on a typical magnet 
    pole strength = m 
    magnetic moment = m * l = ml

    3Thank You

    ANSWER

    • Posted by Roshan Oraon 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Mukul Rana 6 years, 10 months ago

    Because if they do so then there will be two direction of electric field at the same point Which is not possible

    4Thank You

    ANSWER

    • Posted by Aniket Kumar 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Mohhd Arkam 6 years, 10 months ago

    The line integral of magnetic field through any closed loop is equal to mu nod times the net current i threading through the area enclosed by the loop

    2Thank You

    ANSWER

    • Posted by Chitra Bisht 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Sunny Dedha 6 years, 10 months ago

    Displacement current

    0Thank You

    Aman Jakhar 6 years, 10 months ago

    An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas (plasma).

    0Thank You

    ANSWER

    • Posted by Ravendra Mishra 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Aditi Raj 6 years, 10 months ago

    The fractional change due to incident light on minority charge carroers in reverse biasis much more than that over the majority charge carriers in forward bias. Thus, charge in reverse bias current is more easily measurable. So, photodiodes are used to measure the intensity im reverse bias condition.

    3Thank You

    ANSWER

    • Posted by Meedha Wadhwa 6 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Aditi Raj 6 years, 10 months ago

    Optics totally carries 14 marks. Bt in 5 markers, ray optics and wave optics are always in option to each other.

    3Thank You

    ANSWER

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