A student has to do the experiment,on finding the focal length of a given concave mirror, by using a distant object. out of the following, "set ups"(A,B,C,D) available to her,the set up which will give best result isA) a screen,a mirror holder & a scaleB)a mirror holder,a screen holder & a scaleC) a screen holder & a scaleD) a mirror holder & a screen holderanswer one among the 4. i am confused kindly provide appropriate reason

A student has to do the experiment,on finding the focal length of a gi

1.	A student has to do the experiment,on finding the focal length of a given concave mirror, by using a distant object. out of the following, "set ups"(A,B,C,D) available to her,the set up which will give best result isA) a screen,a mirror holder & a scaleB)a mirror holder,a screen holder & a scaleC) a screen holder & a scaleD) a mirror holder & a screen holderanswer one among the 4. i am confused kindly provide appropriate reason
Answer» A)a screen,a mirror holder and a scale OPTION C and D never be true.because it does not contain appropriate material.confusion can be in A and B.by looking B option we SEES that there is not present screen,which is NECESSARY for making image.Hence option A is correct

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