Why are diffraction effects more prominent through a slit formed by two blades than through a slit formed by two fingers?

State two benefit of inhalation through the nasal chambers than through mouth.

Why do magnetic lines prefer to pass through ferromagnetic substances (e.g. Fe) than through oil?

Why can we not get diffraction from a wide slit illuminated by a monochromatic light?

Why can sound waves be diffracted more easily than light waves?

What is the effect of slit width and wavelength of light source on fringe width of the fringes formed by Young's double slit experiment?

Explain why When we try to close a water tap with our fingers, fast jets of water gush through the openings between our fingers

Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?

In Young's double slit experiment,light of wavelength 5,000 overset @A is used.The screen on which fringes are projected is 1.5 m from the centre of the narrow slits. The third bright band on the screen is formed at a distance of 1 cm from the central bright band calculate the separation between the slits.

What is the effect on interference pattern in Young's double slit experiment when separation between two slits is increased. Explain your answer in each case.