Exam NameLight QUESTIONS
DescriptionLight QUESTIONS and Answers exams contains the questions from various competitive exams.These questions are the part of previous year paper.These kind of questions would be helpful in preparing for exams like IAS, PCS, UPSC, NDA, CDS SSC, RRB, PSC, IBPS

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Question: To which one of the following process is the term CMYK related ?

Answer:offset printing

Question: Which of the following types of light are strongly absorbed by plants ?

Answer:blue and red

Question: Which one among the following has the highest energy ?

Answer:blue light

Question: Which one of the following types of waves are used in a night vision apparatus ?


Question: Which one of the following reflects back more sunlight as compared to other three ?

Answer:land covered with fresh snow

Question: Cylindrical lens is used by a person suffering from;


Question: Why is red light employed for danger signals ?

Answer:red light is cattered least

Question: Whose experiments proved that the speed of light was always the same ?

Answer:Michelson and Marley

Question: Phenomenon of formation of three dimensional image by entrance of two light beams from laser or other coherent sources of light is called


Question: A person standing in front of a mirror finds his image thinner but with normal height. The mirror in question is :

Answer:convex and cylindrical with axis vertical

Question: Which one of the following phenomena can not be attributed to the refraction of light ?


Question: To an observer on the lunar surface, during the day time the sky will appear to be;


Question: If the angle between two plane mirrors is 60: then the number of image formed will be-


Question: The chemical part of the dye that absorbs light and produces colour is called:

Answer:a pigment

Question: Panchromatic photographic film is sensitive to :

Answer:the entire region of the visible spectrum

Question: In summerthe mirages are seen due to the phenomenon of :

Answer:total internal reflection

Question: Camberts, law is related to


Question: Electron microscope was invented by

Answer:Knoll and ruska

Question: In which part of the eye lies the pigment, that decides the colour of the eyes of a person ?


Question: What is viewed through an electron microscope ?

Answer:Structure of bacteria and viruses