Classical Thinking

If the aperture of the objective of a telescope is decreased, then its resolving power,

The energy in the phenomenon of interference,

If two independent waves are $\mathrm{y}_{1}=\mathrm{a}_{1} \sin \omega_{1} \mathrm{t}$ and $\mathrm{y}_{2}=\mathrm{a}_{2} \sin \omega_{2} \mathrm{t},$ then

In the set up shown in figure, the two slits $S_1$and $S_2$ are not equidistant from the slit S, then central fringe at ' $\mathrm{O}$ ' is

Select the INCORRECT statement.

Which of the following phenomena distinguishes diffraction and interference?

Assertion: Ultra-violet light is used to achieve high resolving power.

Reason: Resolving power of microscope increases with the decrease of wavelength of light used.

Assertion: The colour of the oil film on the surface of water continuously changes.

Reason: The colour of the light reflected by the oil film depends upon its thickness.