BE Chemical Engineering Semester 2 (FE First Year) - University of Mumbai Question Bank Solutions for Applied Physics 2

What is a divergence of a vector field? Express it in cartesian co-ordinate system.

An electron is accelerated through a potential difference of 5 kV and enters a uniform magnetic field of 0.02 `(wb)/(m^2)` acting normal to the direction of electron motion.
Determine the radius of path. 

Find the divergence of vector field F=x2yz𝒊 ̅+ xz𝒋̅

What is difference between Bottom up and Top Down Approach with respect to Nanotechnology.

What will be the fringe pattern if wedge shaped air film is illuminated with white light?

A wedge shaped air film having angle 40 seconds is illuminated by monochromatic light. Fringes are observed vertically through a microscope. The distance between 10 consecutive dark fringes is 1.2 cm. find the wavelength of monochromatic light used.

What is population inversion? Explain it’s significance in the operation of LASER.

Explain how interference in wedge shaped film is used to test optical flatness of given glass plate.

A wedged shaped air film having an angle of 40 seconds is illuminated by monochromatic light and fringes are observed vertically through a microscope. The distance measured between consecutive fringes is 0.12 cm. Calculate wavelength of light used.

A parallel beam of light of wavelength 5890 A0 is incident on a glass plate having refractive index 𝝁=𝟏.𝟓 such that the angle of refraction in the plate is 600. Calculate the smallest thickness of the glass plate which will appear dark by reflected light.

Why the Newton’s rings are circular and centre of interference pattern (reflected) is dark?

What is pumping in LASER? Give the types of pumping.

Show that the divergence of curl of a vector is zero.

Why the Newton’s rings are circular and fringes in wedge shaped film are straight? 

Why the Newton’s rings are circular and fringes in wedge shaped film are straight? 

With Newton’s ring experiment explain how to determine the refractive index of liquid. 

In Newtons’s ring experiment,what will be the order of dark ring which will have double the diameter of 40th dark ring? 

Explain Newton’s ring experiment and show that diameters of nth dark rings are proportional to square root of natural numbers.

Find the divergence of the vector function A=x² i+x²y² j+24x²y²z³ k.

With the help of proper diagram and necessary equation, explain how Newtons ring experiment is useful to determine the radius of curvature of plano convex lens. In a newton rings experiment the diameter of 5th dark ring is 0.336 cm and the diameter of 15th ring is 0.590 cm. Find the radius of curvature of plano convex lens if the wavelength of light used is 5890 A0.