Q6. When
light is incident on a soap film of thickness 5×10–5 cm, the
wavelength of light reflected maximum in the visible region is 5320 Å.
Refractive index of the film will be,
Q7.Four Gaussian surfaces are
given below with charges inside each Gaussian surface. Rank the electric flux
through each Gaussian surface in increasing order.
Q8.If a light of wavelength 330 nm is incident on a metal with work
function 3.55 eV, the electrons are emitted. Then the wavelength of the emitted
electron is (Take h = 6.6 × 10–34 Js)