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    • Posted by Ankit Gurjar 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Neha Verma 7 years, 3 months ago

    It is small unbiased device which converts electrical energy. It works on the process of photo diode.

    0Thank You

    ANSWER

    • Posted by Ajay Anand 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Anshul Pandey 7 years, 3 months ago

    Because frequency of ac is 50hz(hertz) , ac is multi directional current while dc is unidirectional current . One more important thing is that ac flactuate 50hz right and 50hz left that's why, ac not dc

    0Thank You

    Sam Singh 7 years, 3 months ago

    ?

    3Thank You

    ANSWER

    • Posted by Saily Saily 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Dharmesh Kumar 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Shivani .. 7 years, 3 months ago

    Lag of intensity of magnetisation behind the magnetising field during the process of magnetisation and demagnetisation of ferromagnetic material

    1Thank You

    ANSWER

    • Posted by Neha Verma 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Anshul Pandey 7 years, 3 months ago

    Because force of attraction will be decrease .when going away from the point charge , work has to done due to this loss in energy takes place

    1Thank You

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    • Posted by Aditya Kumar Sinha 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Neha Verma 7 years, 3 months ago

    All matters in universe have dual nature and they behave as a particle as well as wave. This wave is known as matter wave and wavelength is known as de brogli wavelength. This theory is known as theory of dual nature. From de brogli hypothesis, the wave length associated with an electron beam accelerated through 54V must be 1.68 angstrom

    1Thank You

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    • Posted by Shekhar Iyer 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Shivani .. 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Jeetu Kumar 7 years, 3 months ago

    It is the separation between two successive bright or dark fringes

    1Thank You

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    • Posted by Prabhay Yadav 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Priyanka Malik 7 years, 3 months ago

    But..????

    1Thank You

    Prabhay Yadav 7 years, 3 months ago

    But

    0Thank You

    Priyanka Malik 7 years, 3 months ago

    A circuit containing resistance,capacitor

    0Thank You

    ANSWER

    • Posted by Shivanshu Rathour 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Shekhar Iyer 7 years, 3 months ago

    See the ncert paragraph of reflecting telescope

    0Thank You

    ANSWER

    • Posted by Bhavya Jain 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Vineet Kumar Gupta 7 years, 3 months ago

    Because when excited, the singular electron can jump up to different electron shells. It doesn't matter how many there are, it matters where it can jump, and how far it falls back in one go. And as it jumps to different shells it emits different spectral lines and hence forms a complete spectrum

    1Thank You

    Rikky Saini Rikky 7 years, 3 months ago

    How

    1Thank You

    Nitin Singh 7 years, 3 months ago

    I know it

    0Thank You

    ANSWER

    • Posted by Bhavya Jain 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Ved Dhruw 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Aryan Singh 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Aayush Kaushal 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Mohammad Shazil 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Saifali Mulla 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Rajat Dhull 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Aryan Singh 7 years, 3 months ago

    No, it's only in class 11.

    0Thank You

    ANSWER

    • Posted by Navroop Singh 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Surya Prakash Beura 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sumit Kumar 7 years, 3 months ago

    It is the phenomenon in which the emission of photoelectrons takes place when light throws on a photosensitive metallic plate

    3Thank You

    ANSWER

    • Posted by Anu Gupta 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Sourabh Sheokand 7 years, 3 months ago

    Best explaination in S. L ARORA 's BOOK

    1Thank You

    Deepanshu Jaiswal 7 years, 3 months ago

    Typing is not possible but I have in simple language

    0Thank You

    ANSWER

    • Posted by Abhijeet Yadav 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Shreya Bhardwaaj 7 years, 3 months ago

    When light rays are fall to the metal surface they are ejected from the metal surface

    0Thank You

    Shivani .. 7 years, 3 months ago

    Emission of electrons from the metal surface when suitable amount of light falls on it is called photoelectric effect

    0Thank You

    ANSWER

    • Posted by Jayaasrii?? Jayaasrii 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Nidhi Kumari 7 years, 3 months ago

    Directly proprtional

    1Thank You

    ANSWER

    • Posted by Neha Verma 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Aditya Kumar Mishra 7 years, 3 months ago

    No ,because overall the metal ball would be neutral. (As X-rays ate not deviated by electric and magnetic field) it will not affect the metal ball , it Will only produce secondary X-rays

    1Thank You

    ANSWER

    • Posted by Ajit Poddar 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Kshitij Jadhav 7 years, 3 months ago

    हमारे वायुमंडल में हवा है जो बहती रहती है और वो प्रकाश के रास्ते मे अति है जिससे उसके मार्ग में परिवर्तन आता है

    1Thank You

    ANSWER

    • Posted by Vaibhav Singh 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Mahipal Choudhary 7 years, 3 months ago

    See velocity filter topic

    0Thank You

    Mahipal Choudhary 7 years, 3 months ago

    E=v/l

    1Thank You

    ANSWER

    • Posted by Rajat Dhull 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Rupa Pandey 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Aanchal Jain 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 0 answers
    ANSWER

    • Posted by Priyanka Malik 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Sneha Bansal 7 years, 3 months ago

    You should firstly go through the syllabus and typology of questions with there mark-distrbution .for eg.devices are of about 14-15 marks this year and then just practice, prepare and perform accordingly

    0Thank You

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