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Quiz 2
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Q.1
Some people use my lenses to work recording other people, landscapes and objects.Who am I?
Camera
Binoculars
Glasses
Q.2
Some people like using me to enjoy a Safari in Africa, because they can see details of the animals at long distances.Who am I?
Camera
Binoculars
Glasses
Q.3
Through my lenses, people can register and record cultural events.Who am I?
Binoculars
Telescope
Camera
Q.4
I am the instrument used by detectives to see the clues better and to solve the mystery.Who am I?
Telescope
Microscope
Magnifying glass
Q.5
Through my lenses, it is possible to record important moments in people's lives.Who am I?
Magniyng glass
Binoculars
Camera
Q.6
I have lenses that help people to read newspapers, magazines and see well.Who am I?
Telescope
Glasses
Camera
Q.7
My lenses allow us to know the world of microorganisms and many disease-causing agents.Who am I?
Microscope
Camera
Telescope
Q.8
I have a set of lenses that allows scientists to study and observe the Universe and the Galaxy where we live.Who am I?
Telescope
Binoculars
Microscope
Q.9
My lenses protect the eyes by reducing the range of artificial light that is harmful for vision.Who am I?
Magnifyng glass
Glasses
Microscope
Q.10
My lenses help to correct some vision problems that cause headaches, blurred vision and discomfort due to visual effort.Who am I?
Glasses
Camera
Microscope
Q.11
My lenses help to correct some vision problems like myopia, the astigmatism and hyperopia.Who am I?
Binoculars
Glasses
Telescope
Q.12
I have lenses that help children to see better. Who am I?
Camera
Magnifyng glass
Glasses
Q.13
Without my lenses, scientists would never be able to find out about the Sun and the Solar system.Who am I?
Camera
Magnifyng glass
Telescope
Q.14
I am a simple manual optical instrument that students use in Science class to be able to observe small things they don't see well such as insects in the garden. Who am I?
Glasses
Camera
Magnifying glass
Q.15
Some of discoveries made by my lenses were: irregularity of the Moon’s surface and the four largest Jupiter’s moons.Who am I?
Telescope
Microscope
Binoculars
Q.16
Refractive index of material of a prism is √The angle of prism is 60o. What is the angle of minimum deviation?
30o
45o
60o
90o
Q.17
If the critical angle for total internal reflection from a medium to vacuum is 30o, the velocity of light in the medium is
3 X 108 m/s
1.5 X 108 m/s
0.5 X 108 m/s
0.2 X 108 m/s
Q.18
For the same value of angle of incidence, the angles of refraction in three media A, B and C are 15°,andrespectively. In which medium would the velocity of light be minimum?
25°
15°
35°
45°
Q.19
The radius of curvature of the curved surface of a plano-convex lens iscm. If the refractive index of the material of the lens be 1.it will
act as a convex lens only for the objects that lie on its curved side.
act as a concave lens for the objects that lie on its curved side.
act as a convex lens irrespective of the side on which the object lies.
act as a concave lens irrespective of side on which the object lies.
Q.20
You are given four sources of light each one providing a light of a single colour – red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90°. Which of the following statements is correct if the source of yellow light is replaced with that of other lights without changing the angle of incidence?
The beam of red light would undergo total internal reflection.
The beam of red light would bend towards normal while it gets refracted through the second medium.
The beam of blue light would undergo total internal reflection.
The beam of green light would bend away from the normal as it gets refracted through the second medium
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