Solved papers for JEE Main & Advanced JEE Main Paper (Held On 25 April 2013)
done JEE Main Paper (Held On 25 April 2013) Total Questions - 3
question_answer1) A thin glass plate of thikness\[\frac{2500}{3}\lambda (\lambda \] is wavelength of light used) and refractive index \[\mu =1.5\] is inserted between one the slits and the screen Yong?s double slit experiment. At a point on the screen equidistant form the slits, the ratio of the intensities before and after the introduction of the glass plate is:
JEE Main Online Paper ( Held On 25 April 2013 )
question_answer2) The source that illuminates the double-slit in ?double?slit interference experiment? emits two distinct monochromatic waves of wavelength 500 nm and 600 nm each of them producing its own pattern on the screen. At the central point of the pattern when path difference is zero, maxima of booth the patterns coincide and the resulting interference pattern is most distinct at the region of zero path difference. But as one moves out of this central region, the two fringe systems are gradually out of step such that maximum due to one wave length coincides with the minimum due to the other and the other and the combined fringe system becomes completely indistinct. This may happen when path difference in nm is :
JEE Main Online Paper ( Held On 25 April 2013 )
question_answer3) This question has Statement -1 and Statement -2. Of the four choices given after the Statements, choose the one that best describes the two Statement. Statement-1: Out of radio waves and microwaves, the radio waves undergo more diffraction. Statement-2: Radio waves have greater frequency compared to microwaves.
JEE Main Online Paper ( Held On 25 April 2013 )
A)
Statement -1 is true, Statement -2 is true and Statement -2 is the correct explanation of Statement 1.
doneclear
B)
Statement -1 is false, Statemnt-2 is true.
doneclear
C)
Statement -1 is true, Statement -2 is true.
doneclear
D)
(d) Statement -1 is true, Statement 2 is true butStatement-2 is not the correct explanation of Statement -1.