Everyday ScienceGeometrical Optics
An endoscope is used to explore the
Inner organs of human body
skin
tissues of human body
exocrine glands
Inner organs of human body
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Vitamin C is soluble inA. fat
B. water
C. ethers
D. phenols
The critical angle for glass is
A. 50 ยฐ
B. 42 ยฐ
C. 45 ยฐ
D. 30 ยฐ
The endoscope used to examine the bladder is called
A. cystoscope
B. gastroscope
C. microscope
D. bronchoscope
In photograph enlarger, the object is placed
A. between F and 2F
B. beyond 2F
C. at F
D. less than F
The iris has an opening at its center which is called
A. cornea
B. pupil
C. retina
D. chord
The reflection by the smooth surfaces is called
A. regular reflection
B. irregular reflection
C. regular refraction
D. irregular refraction
Both virtual and real images can be formed by a
A. plane mirror
B. convex mirror
C. concave mirror
D. silver mirror
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