Optics Answers

The critical angle for total internal reflection at an air - water interface is approximately 48 degrees. In which of the following situations will total internal reflection occur.

A. light incident in water at 40 degrees
B. light incident in water at 55 degrees
C. light incident in air at 40 degrees
D. light incident in air at 55 degrees

A ray of light travels from air to glass. The incident ray makes an angle of 45 degrees while the refracted ray makes and angle of 30 degrees with the normal to the interface. The speed of light in air is 3.0×108m/s. What is the of speed of light in glass?

A. 2.12×108m/s
B. 4.24×108m/s
C. 3.73×108/s
D. 3.00×108$/s

calculate the maximum wavelength of microwave radiation that will absorbed at 0k in
a)pb,Tc=7.19k
b)Al,Tc=1.2k

A convex mirror has a radius of 20cm. An object is placed 30 cm in front of the mirror. Determine where the image will appear?

A water wave has a speed of 23.0 meters/second. If the wave’s frequency is 0.0680 hertz, what is the wavelength?

the magnification of an object due to plane mirror is?why?

A person is approaching a plane mirror with speed 10cm/sec.if the initial distance between person and mirror is 1m.then the distance between person and his image after 2.5sec will be??

A sinusodal wave travels along with.The time for a praticular poin as move from maximum displace ment to zerodisplacement is 178ms.The wavelength of the wave is 1.38m.Find the period ,the frequency and the speed of the wave

a glass prism in the shape of a quarter-cylinder lies on a horizontal table.a uniform, horizontal light beam falls on its vertical plane surface, as shown in the figure. if the radius of the cylinder is R=5cm and the refractive index of the glass is n=1.5,where , on the table beyond the cylinder, will a path of light be found?

If your vision somehow began to increase so that you could see higher and higher frequencies beyond visible light, what type of wave would you be able to perceive first?