1) _________ is the angle between incident ray and normal a) Normal b) Point of incidence c) Angle of reflection d) Angle of incidence 2) When a ray of light falls on a surface, then it can undergo the following phenomenon_______ or ______. a) virtual or real b) incidence or reflection c) absorption or reflection d) shadow or image 3) ________ colours are the group of colors from which all other color can be obtained by mixing. a) Secondary b) Primary c) Visible d) Black 4) Appearance of an apple in red color is due to ________. a) Colour subtraction b) Shadow c) Reflection d) Absorption 5) The angle between reflected ray and normal is ____________________________________. a) Ray b) Normal c) Angle of Reflection d) Angle on incidence 6) ______________ is a toy which produces beautiful patterns from colored papers. a) Torch b) kaleidoscope c) microscope d) telescope

LIGHT

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?