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Light is shined into a glass rod. To guarantee the total internal reflection (TIR) happens to all the possible rays, what is the minimum index of refraction n for the glass?
Hint: To make sure all rays TIR inside the rod, you just need to consider an extreme case, i.e., the incident angle q1 (on the top surface of glass rod) equals to 90o.
What is Crystal twinning Crystal twinning occurs when two divide crystals share some of the same crystal lattice points in a symmetrical manner. The result is an intergrowth of
Show that average value of Poynting vector for a plane e-m wave is 1/2 √μ/e XH 2 .
In this problem we will consider a vapor fluid interface on top of a solid surface. A schematic is shown below: This is a zoomed-in picture of the edge of a liquid droplet
Explain about the transmission electron microscope. The Transmission Electron Microscope Transmission electron microscopy (TEM) is a microscopy method; a beam of electrons i
The supersonic airliner Concorde is 62.1 m long when sitting on the ground on a typical(15degreesC) day. It is primarily made of aluminum. In flight at twice the speed of sound, fr
A 30g bullet strikes a .650kg block attached to a fixed horizontal spring whose spring constant is 5.90x10 3 N/m and sets it into vibration with an amplitude of 20.0cm. What was th
Volume of Solid Ring A solid sphere is bored out such that the radial axis of the removed cylinder passes through the centre. The ring of remaining material stands 6 centimetre
N-Type Substances: When a small quantity of Arsenic or Phosphorous (group VA elements) is added to silicon or Germanium, it becomes good conductor of negative charges, such a s
A pure semiconductor is known as intrinsic semiconductor. It has thermally formed current carriers (i) They have four electrons in the outer part of orbit of atom and atoms are
To determine the acceleration due to gravity using a simple pendulum. Apparatus: Pendulum, meter scale, stand, stop watch, vernier callipers. Procedure: 1. The diameter of the bob
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