FCC|PACKING IN 1D,2D AND 3D

Atom Arrangement In 1D, 2D And 3D|Voids|Hexagonal Close Packing|Cubic Close Packing|OMR

Two lenses of focal lengths -20cm and +10cm are put in contact. Find power of the combination (A) -1D (B) -2D (C) +5D (D) +2D

Close Packing In 1d And 2d

If D_1 and D_2 are diagonal matices of order 3xx3 then (A) D_1^n is a diagonal matrix (B) D_1D_2=D_2D_1 (C) D_1^2+D_2^2 is diagonal matrix (D) D_1D_2 is a diagonal matix

Energy|| Momentum OF Photon|| Intensity due to 3D||2D||1D Source

four fair dice D_(1),D_(2),D_(3) and D_(4) each having six faces numbered 1,2,3,4,5 and 6 are rolled simultaneously.The probability that D_(4) shows a number appearing on one of D_(1),D_(2),D_(3) is