Lens_Audrey

What is the objects position when the image is beyond 2F and the image formed is real, inverted, and bigger than the object?

• beyond 2F'

• between F' and lens

• between F' and 2F'

A piece of glass or transparent material that has at least one spherical surface?

• convex lens

• spherical lens

• diverging lens

How many focal points does a lens have?

• 0

• 1

• 2

Normal vision of the human eyes is on the average?

• 20 cm up to infinity

• 25 cm up to infinity

• 30 cm up to infinity

Which statement is NOT true about camera?

• Its refracting system is the shutter.

• The opening for light to enter is called the aperture.

• The image is formed in the film, chip, or memory card.

The additional lens near the object is called?

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OFF

Answer explanation

objectives

The magnifying glass near the eye is called?

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OFF

Answer explanation

eyepiece

Presbyopia is sometimes called "aging eyes" or?

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OFF

Answer explanation

old eyes

Myopia is the medical term for?

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OFF

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nearsightedness

The point through which all the light rays pass without being bent?

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OFF

Answer explanation

optical center