Some people use my lenses to work recording other people, landscapes and objects.Who am I?

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?

Through my lenses, people can register and record cultural events.Who am I?

I am the instrument used by detectives to see the clues better and to solve the mystery.Who am I?

Through my lenses, it is possible to record important moments in people's lives.Who am I?

I have lenses that help people to read newspapers, magazines and see well.Who am I?

My lenses allow us to know the world of microorganisms and many disease-causing agents.Who am I?

I have a set of lenses that allows scientists to study and observe the Universe and the Galaxy where we live.Who am I?

My lenses protect the eyes by reducing the range of artificial light that is harmful for vision.Who am I?

My lenses help to correct some vision problems that cause headaches, blurred vision and discomfort due to visual effort.Who am I?

My lenses help to correct some vision problems like myopia, the astigmatism and hyperopia.Who am I?

I have lenses that help children to see better. Who am I?

Without my lenses, scientists would never be able to find out about the Sun and the Solar system.Who am I?

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?

Some of discoveries made by my lenses were: irregularity of the Moon’s surface and the four largest Jupiter’s moons.Who am I?

Refractive index of material of a prism is √The angle of prism is 60o. What is the angle of minimum deviation?

If the critical angle for total internal reflection from a medium to vacuum is 30o, the velocity of light in the medium is

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?

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

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?