{
"cells": [
 {
		   "cell_type": "markdown",
	   "metadata": {},
	   "source": [
       "# Chapter 5: Light"
	   ]
	},
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.1: minimum_deviation.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//INPUT DATA\n",
"np=1.39 //refractive index of prism\n",
"nl=1.29 //refractive index of liquid\n",
"a=62 //refracting angle of prism\n",
"//calculation\n",
"x=np*sind(62/2)/nl//snells law\n",
"y=asind(x)\n",
"d=(y*2)-a//minimum deviation\n",
"//output\n",
"printf('the minimum deviation is %3.3f degree',d)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.2: incidence_and_prism_angle.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//INPUT DATA\n",
"np=1.39 //refractive index in air\n",
"a=62 //refracting angle of prism\n",
"//calculation\n",
"x=1/np\n",
"c=asind(x)//critical angle\n",
"r=a-c\n",
"i= np* sind(r)//snells law\n",
"i1=asind(i)\n",
"A=2*c//greatest prism angle allowing refraction\n",
"//output\n",
"printf('angle of incidence producing maximum deviation is %3.3f deg',r)\n",
"printf(' \n greatest prism angle allowing refraction is %3.3f deg',A)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.3: position_and_nature_of_image.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"f=0.15 //focal length\n",
"u=0.2 //distance of object\n",
"//calculation\n",
"x=(1/-f)-(1/u)//lens formula\n",
"y=1/x\n",
"m=y/u//linear magnification\n",
"//output\n",
"printf('the position of image is %3.3f m',y)\n",
"printf('\n linear magnification is %3.3f hence image is diminished',m)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.4: position_of_image.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"f1=0.25 //focal length of diverging lens\n",
"f2=0.2 //focal length of converging lens\n",
"//calculation\n",
"x=(1/-f1)+(1/f2)//lens formula\n",
"y=1/x\n",
"a=(1/y)-(1/0.15)//lens formula\n",
"b=1/a\n",
"//output\n",
"printf('the position of image is %3.3f m hence the image is virtual',b)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.5: position_and_nature_of_image.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"f=0.5 //focal length \n",
"u=0.8 //distance of object \n",
"f1=0.2 //focal length of converging lens\n",
"d=1 //distance behind the first lens\n",
"//calculation\n",
"x=(1/f)-(1/u)//lens formula\n",
"y=1/x\n",
"u1=-(y-d)//second lens \n",
"a=1/f1 +(1/-u1)//lens formula\n",
"b=1/a\n",
"//output\n",
"printf('the image lies %3.3f m behind second lens',b)\n",
"printf('\n the image is %3.3f  m behind first lens',b+d)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 5.6: lens_values.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"F=5 //power of lenses\n",
"f1=0.45 //focal length\n",
"//calculation\n",
"x=F-(1/f1)//lens formula\n",
"f2=1/x\n",
"//output\n",
"printf('the focal length is %3.3f m',f2)\n",
"printf('\n the power is %3.3f dioptre',x)"
   ]
   }
],
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		   "language": "scilab",
		   "name": "scilab"
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		  "language_info": {
		   "file_extension": ".sce",
		   "help_links": [
			{
			 "text": "MetaKernel Magics",
			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
			}
		   ],
		   "mimetype": "text/x-octave",
		   "name": "scilab",
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