51) What the sharpness of a television image is called
Ans) Resolution
52) A mirage occurs because of
Ans) Total Internal reflection
53) Forged documents are detected by
Ans) Ultraviolet rays
54) What is the source of electric energy in an artificial satellite (General Science Objective Questions)
Ans) Solar cell
55) The instrument used to see the distant objects on the earth is
Ans) Terrestrial telescope
56) A microscope used in pathological laboratories forms
Ans_ Magnified, virtual and inverted image
57) The sparkling o a diamond is due to
Ans) Total internal reflection of light
58) Short-sight in human eye can be corrected by using proper
Ans) Concave lens
59) Which colour of light shows maximum deviation when passed through a prism
Ans Violet
60) Which type of mirror is used in the headlight of vehicles
Ans) Concave mirror
