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Name the institutes that are contributing their role in the field of laser in Pakistan. What are their distinctions or specializations? 


What is glancing Angle?

A short linear objectbof height b lies along the axis of a concave mirror that has a focal length of f and at a distance b from the pole of mirror. What is the height of the image?


A metal wire that is 3m long at 20 degrees Celsius is found to increase in length by 1.5cm when heated to 520 degrees Celsius. Determine the Coefficient of the linear expansion of the metal?
Steel railroad rails 18,2880m long are laid on a winter day when the temperature is - 6,00 degrees Celsius. How much space must be left between rails if they are just to touch on a summer day when the temperature is 43 degree Celsius.
A ray of light is minimally deviated when incident at an angle 30 degrees on one face of a glass prism of refractive index 1.5. The minimum angle of deviation is?
A plan wave(500A•) falls normally on a long narrow slit of width 0.5mn. Calculate the angles of diffraction corresponding to the first three minima. Repeat the calculations crossponding width of 0.1mm. Interpred physically the change in the diffraction pattern.
what is the nature and focal length of the lens that will form a virtual image having one-quarter the dimensions of an object spaced 40 cm from the lens?
What is the nature and the focal length of the lens that will form virtual image having one quarter the dimensions of an object spaced 40cm from the lens
what is Fabry-Perot Interferometer?