1) Time taken to complete one cycle is called as  a) Frequency  b) Time period  c) Amplitude  d) Displacement  e) Wave  2) The motion which is repeated after equal intervals of time  a) Oscillatory b) To and fro  c) Periodic Motion   d) Simple Harmonic Motion e) Non Harmonic 3) The phenomena of redistribution of energy is called as  a) Interference b) Beat c) Diffraction d) TIR e) Superposition of Waves 4) When crest falls on crest and Trough falls on trough then what happens  a) Dark fringe b) Bright Fringe c) Amplitude Decreases d) Destructive interference e) May be dark or bright fringe 5) Write the correct option of constructive interference  a) (2n+1)ƛ/2 b) (2n-1)ƛ/2 c) (2n+2)ƛ/2 d) (2n+1)ƛ e) nƛ 6) Write the correct option of destructive interference a) (2n+1)ƛ/2 b) (2n+1)ƛ/3 c) (2n+1)ƛ/4 d) (2n+3)ƛ/2 e) nƛ

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