//Heading Displayed on the QUiz Page
pageHeading="Optics Quiz"
//Questions


qa=new Array()

qa[0] = new Question("Fermat's principle states that the path taken by a ray of light in passing from one medium to the other is the path of",
    "Minimum time",
    "Maximum time",
    "Minimum or Maximum time",
    "any time", 
0)

qa[1] = new Question("The deviation produced by a lens is",
    "dependent on the focal length and the height",
    "dependent on the focal lenght",
    "dependent on the height where the incident ray falls on the lens",
    "independent of both the focal lenght and the height", 
0)

qa[2] = new Question("Two lenses of powers P1 and P2 are in contact with each other.The resultant power is",
    "P1-P2",
    "P1+P2",
    "1/P1-1/P2",
    "1/P1-1/P2",
1)

qa[3] = new Question("Which of the following is not a monochromatic aberration",
    "Coma",
    "astigmatism",
    "curvature of the field",
    "none of the above", 
3)

qa[4] = new Question("The ratio of refractive index of blue light to that of red light is",
"less than 1",
"equal to 1",
"greater than 1",
"zero",
2)

qa[5] = new Question("When a rainbow is seen in the sky",
    "the observer's back is towards the sun",
    "the observer's face is towards the sun",
    "the observer's face is at right angles to the sun",
    "the sun is above the head of the observer",
0)

qa[6] = new Question("To detect the presence of small particles of matter suspended in al liquid, we use",
"compound microscope",
"ultra microscope",
"simple microscope",
"binocular microscope",
1)

qa[7] = new Question("To study the biological specimen in detail for a long time, we use",
    "compound  microscope",
    "ultra microscope",
    "binocular microscope",
    "either(b)or(c)", 
2)

qa[8] = new Question("colour of light is determined by its",
"intensity",
"amplitude",
"velocity",
"frequency",
3)

qa[9] = new Question("Reflection of light can be correctly explained if light is supposed to be made up of particles",
"true",
"false ",
"uncertain",
"sometimes true, sometimes false",
0)