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    • Posted by Suresh Jadhav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 2 answers

    Trisha Tyagi 8 years, 1 month ago

    Whenever there is a relative motion between a current and a coil a current is induced in the coil.This process of inducing a current by changing in magnetic flux is called EMI.

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    Ankesh Kunwar 8 years, 1 month ago

    g

    2Thank You

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    • Posted by Ashu Rathore 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Aryan Singh 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Ajeet Yadav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Trisha Tyagi 8 years, 1 month ago

    When two coil are placed together then the current flowing through primary coil or there is a change in the value of flowing current in the primary coil.Then an induced emf or current is developed in secondary coil which oppose the flow of current .This phenomenon is known as mutual inductance.

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    • Posted by Reshma Yadav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 2 answers

    Vivek Pandey 8 years, 1 month ago

    Because it is originated from positive and end on negative they do not meet its initial stage

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    Vivek Saini 8 years, 1 month ago

    Electric field lines are move from +ve to -ve and if they form closed loops then they have to move from -ve to +ve and which is not possible. Thank you...

    1Thank You

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    • Posted by Soumya Jeet Das 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vivek Saini 8 years, 1 month ago

    T=PEsin७

    1Thank You

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    • Posted by Mannu Guggutingu 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
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    • Posted by Irfan Ali 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by S Kumaresan 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vivek Saini 8 years, 1 month ago

    Wavelets are waves that are produced from secondry wave front

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    • Posted by Tushar Patidar 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Nayan Chaturvedi 8 years, 1 month ago

    By light direction

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    • Posted by Rajendra Pratap 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
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    • Posted by Ashish Upadhyay 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Angad Kumar 8 years, 1 month ago

    Firstly it is not potetiometer , it is potentiometer . A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

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    • Posted by Wasim Akram 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
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    • Posted by Ajeet Yadav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Trisha Tyagi 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 2 answers

    Sandhya Shree 8 years, 1 month ago

    first gothrough the given lens nature and those laws even sign conventiion tooo.........then draw the lens/mirror ......then oject where to be placed........ then at last the ray diagrams with marking positions and soon..........

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    Tanmay Joshu 8 years, 1 month ago

    If you are well known with Law of reflections/refraction and reflected/refracted ray form curved surfaces, you'll face no such confusion.. Best way is to go through these basics

    1Thank You

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    • Posted by Vinay Napit 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Rashi Bari 8 years, 1 month ago

    Given Radius of curvature that is R1= -R2 Refractive index of lens μ=1.5 Focal length f=30cm Using lens makers formula 1/f=(μ-1)(1/R1-1/R2) 1/30= (1.5-1){1/R1-(-1/R1)} 1/30=(1/2)(2/R1) 1/30=1/R1 |R1|=|R2|=30cm

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    • Posted by Asis Kon 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Gurvinder Kaur 7 years, 11 months ago

    The elementary idea of ohm's law states that potential difference V across a conductoris directly proportional to the current I passing through the condutor when physical conditions of the conductor are not changed.
    i.e. {tex}V\alpha I{/tex}
    or {tex}\frac{V}{I} = {\text{constant}}(R){/tex}
    Where R is the constant known ar resistance of the conductor.Resistance is directly proportional to the length of the conductor and inversely proportional to the area of crossection of the conductor. Therefore, {tex}R\alpha lA{/tex}, where R, l and A are resistance, length and area of crossection respectively.On removing the sign of proportionality, we get:
    {tex}R = \rho lA{/tex}, where {tex}\rho {/tex} is the resistivity of the conductorof resistance R which depends on the nature of the conductor.
    Now {tex}I = neAvd{/tex},
    where n is the number of electrons present in unit volume of the conductor drifting with velocity vd.
    But {tex}vd = eEm\tau {/tex},
    so putting the value of vd in the above eqn of current, we get, {tex}I = neA \times eEm\tau {/tex} further we know that E=Vl,
    so {tex}I = neA \times eVml\tau {/tex}
    Again {tex}VI = R = m\ln {e^2}A\tau {/tex}
    and {tex}\rho = RAl = mn{e^2}\tau {/tex}
    These are the required expressions.

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    • Posted by Hannah K 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Manoj Sharma 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sandhya Shree 8 years, 1 month ago

    zero.....

    0Thank You

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    • Posted by Deepak Kumar 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Govind Singh 7 years, 11 months ago

    Neutrinos are neutral particles having mass less (may even be zero) than electrons. Thus they can penetrate through a very large area (even earth). Hence they go undetected.

    1Thank You

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    • Posted by Pallavi Singh 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Pallavi Singh 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Sadia Salim 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Vijay Vijay 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Deepak Kumar 8 years, 1 month ago

    DOING HARDWORK

    1Thank You

    ANSWER
    Ma

    • Posted by Kashish Chakrawarty 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Sidheshwar Srivastav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 2 answers

    Sandhya Shree 8 years, 1 month ago

    gothrough 10th book first.......

    0Thank You

    Trisha Tyagi 8 years, 1 month ago

    sign convention is depend on where the objest or image is situated not on real or virtual image whereas i think .If the obect is situated left side to the mirror then it is taken negative or if image is situated right side then it is taken positive or any other thing

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    • Posted by Satyam Bhadoriya 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Mukul Thakur 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Hannah K 8 years, 1 month ago

    When the positive terminal of a battery is connected to p and negative to the n type then the circuit is said to be the forward bias And reverse bias is just the opp. .when negative terminal of battery is connected to p and positive to the n then the circuit is said to be in reverse

    0Thank You

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    • Posted by Nishchay Kathuria 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Rd Yadav 8 years, 1 month ago

    CBSE > Class 12 > Physics
    • 1 answers

    Neha Dalal 5 years, 11 months ago

    blue because minimum wavelength and maximum stopping potential

    1Thank You

    ANSWER

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