IIT-JEE Exam

Two coherent point sources S1 and S2 are
separated by a small distance 'd'..The
fringes obtained on the screen will be -

(1) semi-circles (2) concentric circles
(3) points (4) straight lines

Read Solution (Total 0)

IIT-JEE Other Question

The amplitude of a damped oscillator decreases to
0.9 times its original magnitude in 5s. In another
10s it will decrease to α times its original
magnitude, where α equals -
(1) 0.729 (2) 0.6 (3) 0.7 (4) 0.81 A metallic rod of length 'l ' is tied to a string of
length 2l and made to rotate with angular speed ω
on a horizontal table with one end of the string
fixed. If there is a vertical magnetic field 'B' in the
region, the e.m.f. induced across the ends of the
rod is -