Senior High School: 11th and 12th Grade - Physics - Light - Lenses 1 Solution

Q.1.

The nature of an image produced by a lens is defined by which attributes?

Q.2.

What is refraction?

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The manipulation of light to form bright and dark spots by passing it through a narrow slit
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The change in direction of light as it passes from one medium to another
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The ability of light to spread out to fill a room
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The ability of light to penetrate solid objects

Q.3.

How does a lens work?

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It forms an image by refracting light
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It forms an image by diffracting light
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It forms an image by diffusing light
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It takes a picture with a digital camera and tags it on Facebook for you to see

Q.4.

Consider a convex lens - parallel rays of light are brought to a focus at which point?

Q.5.

What is the distance from the lens to the principal focus called?

Q.6.

Which formula correctly states how refractive index is related to the angles of incidence and refraction?

Q.7.

What does represent in the above equation?

Q.8.

What does represent in the above equation?

Q.9.

Which type of lens would be a good choice to use for the purposes of magnification?

Q.10.

What is the refractive index of a medium when light is incident upon it at 45 to the normal and the angle of the refraction is 30 from the normal?