IIT-JEE Exam

Choose the correct statement.
(A) The speed of light in the meta-material is v = c|n|
(B) The speed of light in the meta-material is v = | n |
c
(C) The speed of light in the meta-material is v = c.
(D) The wavelength of the light in the meta-material (m) is given by m = air |n|, where air is the wavelength

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IIT-JEE Other Question

If the anti-neutrino had amass of 3eV/c2 (where c is the speed of light) instead of zeromass, what should be
the range of the kinetic energy, K, of the electron ? Which of the following statements about the instantaneous axis (passing through the centre of mass) is
correct?
(A) It is vertical for both the cases (a) and (b).
(B) It is verticle for case (a); and is at 45° to the x-z plane and lies in the plane of the disc for case (b)
(C) It is horizontal ofr case (a); and is at 45° to the x - z plane and is normal to the plane of the disc for case
(b).
(D) It is vertical of case (a); and is at 45° to the x - z plane and is normal to the plane of the disc for case (b).