Find the radius of the central dark Newton's ring observed in reflection if there is benzene solution (n-1.5) filled in between lens and glass slab. Radius of curvature of the lens R-1 m. Indices of refraction of the lens and the glass slab are equal and higher than that of benzene. Yellow monochromatic light λ=5890 A is used.

Which of the following is an example of motion in two dimensions?

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f

The first law of thermodynamics is as follows: ∆u=q-w , which means in a system is equal to added, minus done by the system. the units for these variables are in .