LIGHT

Primary colors are
1. magenta, cyan and yellow
2. red, blue and green
3. all the above colors
4. none of the above colors
Secondary colors are
1. magenta, cyan and yellow
2. red, blue and green
3. all the above colors
4. none of the above colors
Combination of VIBGYOR is
1. black
2. white
3. red
4. violet
Color with shorter wavelength is
1. black
2. white
3. red
4. violet
Color with longer wavelength is
1. black
2. white
3. red
4. violet
What is an object that has atleast two flat surfaces from an acute angle?
1. prism
2. newton disk
3. all the above
4. none of the above
What is cardboard disc with 7 equal sectors colored VIBGYOR?
1. prism
2. newton disk
3. all the above
4. none of the above
The images that are obtained on the screen are called
1. virtual image
2. real image
3. erect image
4. none of the above
The images that cannot be obtained on the screen are called
1. virtual image
2. real image
3. erect image
4. none of the above
What is formed only by opaque objects?
1. Eclipse
2. Rainbow
3. Shadow
4. None of the above