sdharel22

12. Which of the following makes a CD or DVD show rainbow pattern?

[A] Diffraction of the Light
[B] Thin-Film Interference of the light
[C] Scattering of the light
[D] Polarisation of the light

17. Which of the following is the largest practical unit of mass?

[A] Slug
[B] a.m.u
[C] Hyperkg
[D] C.S.L