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Tag: position

Posted on November 15, 2011November 15, 2011

Numerical Problems From Optics

  1. When an object of height 4cm is placed at 40cm from a mirror the mirror forms the image on the object itself. If the height of the image is equal to the height of the object. Find out the focal
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  • Posted on November 5, 2011

    A problem from Optics

    A convergent beam of light passes through a diverging lens of focal length 0.2m and comes to focus at distance 0.3m behind the lens.Find the position of the point at which the beam would converge in read more

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  • Posted on October 30, 2011October 30, 2011

    Spherical Mirror Problem

    A rear view mirror used in a bus has a radius of curvature 3.5 m. If the driver of the bus locates a car at 10.0m behind the bus, find the position, nature and size of the image of the car.

    Ans:

    f = r/2=-1.75 read more

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  • Posted on October 13, 2011October 13, 2011

    Numerical Problems from Light

    Madhu sent us the following problems from “Light”. Visitors can attempt to solve the problems by quoting the question number.

    Most of the questions below are based on mirror formula and lens read more

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  • Posted on October 10, 2011October 10, 2011

    Motion in a vertical circle and conservation of energy

    A stone  tied to a string of length l is whirled around a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at the lowest position and has a read more

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  • Posted on September 10, 2011

    Relative position of a helicopter

    If a helicopter takes off from a point on earth.(at certain altitude) and its still at that point in air.After certain time interval the observer whose position was same as that of helicopter’s take off point will see the helicopter right above him. The question arises is that how it is possible if [...]

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  • Posted on July 29, 2011

    Big Bang Theory

    ‘BIG BANG’ theory is well known to all . If it actually happened, Then I thought a question about this, like as what is the actual position of our earth in the previous time of ‘BIG BANG’?? When the whole earth is like a point. … Arkajyoti asked Incoming search terms:big bang theorytheory related in [...]

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