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    Subject
    Physics

    Class

    ICSE Class 12

    Pre Boards

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    Sample Papers

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    ISC Class 12 Physics Solved Question Paper 2008

    Multiple Choice QuestionsShort Answer Type

    11. What will be the effect, if any, on the fringe width in Young’s double slit experiment if red light is used in place of violet light ?
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    12. How will you identify experimentally whether a given beam of light is plane polarised or unpolarised ?
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    13. An intensity of illumination of 5 lux is required at a distance of 10 m from an electric lamp. What must be the luminous intensity of the lamp ?
    167 Views
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    14. What is the main reason for axial chromatic aberration in the formation of images by a lens ?

    A lens may be assumed to be made of a number of prisms placed one above the other.

    Just as a prism disperses white light, lens also disperses white light. This is the cause of chromatic aberration.
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    15. What is the angle of refraction made by a ray of light inside a regular i.e., an equilateral glass prism in the minimum deviation case ?
    298 Views
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    16. Photo electric threshold frequency of an alkali metal is 5.0 x 1014 Hz. Calculate the work function of this metal.
    322 Views
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    17. What conclusion can be drawn from G.P. Thomson’s experiment ?
    310 Views
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    18.

    Half life of a certain radioactive substance is 13.86 days. What is the value of its disintegration constant?

    199 Views
    Answer
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    19. What is the source of energy of stars ?
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    20.

    Identify the logic gate whose truth table is given below and draw its logic symbol.


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    NCERT Solutions
    Textbook Solutions | Additional Questions

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