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    • Posted by Krati Yadav 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 4 answers

    Nishu Goyal 6 years, 5 months ago

    It depend how you change resistance if changing dimensions than resistivity will remain same . And if by doping than it will change directly proportional to resistance

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    Ab Tri 6 years, 5 months ago

    It is directly proportional to the resistance

    0Thank You

    Amisha Singh 6 years, 5 months ago

    No change

    1Thank You

    Akanksha Kumari? 6 years, 5 months ago

    No change because resistivity is a property of material . Or we can take it as constant as resistance is directly proportional to length and inversely proportional to area and rho comes as constant of proportionality

    1Thank You

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    • Posted by Priyanka Dubey 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Santosh Yadav 6 years, 5 months ago

    Ncert me summary hota hai last page pe

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    • Posted by Suraj Kumar Yadav 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Gaurav Seth 6 years, 5 months ago

    Because emf is the potential difference across the two terminals of a voltage source when it is not connected to any circuit. And once it is connected to a circuit, the voltage reduces slightly because of the internal resistance of the voltage source.

    The terminal voltage of the voltage source is the potential difference across the terminals when it is connected to a circuit.

    That is why the emf of a cell is always greater than its terminal voltage.

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    • Posted by Shubham Nayak 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Khuskaran Sidhu 6 years, 5 months ago

    No,only || plate capacitor

    0Thank You

    Neha Choudhary 6 years, 5 months ago

    No

    1Thank You

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    • Posted by Subho Fouzdar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Krishna Yadav 6 years, 5 months ago

    Counter-electromotive force, also known as back electromotive force, is the electromotive force or "voltage" that opposes the change in current which induced it. CEMF is the EMF caused by magnetic induction.

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    • Posted by Yatendra Upadhyay 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Akash Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Shambu Kadakol 6 years, 5 months ago

    If the two forces attration or repulsion between two paint charges directly prepostional to the product of magnitude and inversly prepostional to squre of distance between them

    0Thank You

    Khuskaran Sidhu 6 years, 5 months ago

    Force of attraction or repulsion between two stationary charges is directly proportional to the product of the magnitude of both the charges and inversely proportional to the square of the distance between the centres of both charges

    1Thank You

    Raman Brar 6 years, 5 months ago

    It state that force between two charge is directly propotional to product of charges and inversly propotional to squre of distance between them.

    1Thank You

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    • Posted by Vishwamitra Saran 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khuskaran Sidhu 6 years, 5 months ago

    Image will be formed at the back of mirror and it will be virtual erect and enlarged magnification , m= - v/u

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Disha Verma 6 years, 5 months ago

    R1= +10cm R2= -15 cm f=12cm 1/f=( refractive index-1) ( 1/R1-1/R2) 1/12= (refractive index-1) (1/10-1/-15) 1/12=(refractive index-1)(1/6) 6/12= (refractive index -1) 0.5+1= refractive index 1.5 = refractive index

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vidushi Chaudhary 6 years, 5 months ago

    1.. incident angle should be greater than critical angle 2..ray should travel from denser to rarer medium

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Shuvh Chakravarti 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Khuskaran Sidhu 6 years, 5 months ago

    I = .707 Io

    0Thank You

    Amit Yadav 6 years, 5 months ago

    I rms = Io/√2

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Kartikey Yadav 6 years, 5 months ago

    Based on total internal reflection

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khuskaran Sidhu 6 years, 5 months ago

    1/f =1 /v -1/u

    1Thank You

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Disha Verma 6 years, 5 months ago

    D=5-2.5= 2.5D. f= 1/2.5D =0.4 m= 4cm

    0Thank You

    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Sangam Garg 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Khuskaran Sidhu 6 years, 5 months ago

    8.854 ×10 ^-12 C^2/Nm^2

    1Thank You

    Bhawna Golchha 6 years, 5 months ago

    8.854*10power - 12

    0Thank You

    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Raman Brar 6 years, 5 months ago

    Because red colour have high frequency in visible spectrum and high penetrating power which can reach our eyes.

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    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Dév Ssálíyàñ 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khuskaran Sidhu 6 years, 5 months ago

    Increases voltage, used near thermal stations Hysterics loss Heat loss

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    • Posted by Ashish Yadav 6 years, 5 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 5 months ago

    Limitations of this law:

    • Now, this law is valid for conductors only and that too at a constant temperature. The resistance of a conductor increases with temperature. Hence, for changing temperature the V-I graph for a conductor will be non-linear (not a straight line).
    • In case of insulators ohm’s law is not followed at all, insulators do not conduct at all. But, when a very high voltage is applied across an insulator dielectric break down occurs and all of a sudden current begins to flow.
    • Ohm’s law is not followed by semiconductors. The V-I graph has a steep rising at a particular voltage, which indicates that the material begins to conduct properly only after a certain voltage.

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