TEST - 14 (X - REFRACTION OF LIGHT AT CURVED SURFACES)

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EFFORTS NEVER FAIL

NAME : *

1.The lens which can form real and virtual images is *

1 point

Convex

Concave

plano-convex

Concavo convex

2.The lens which always form virtual images is *

1 point

Convex

Concave

plano-convex

Concavo convex

3.If the focal length is positive then the lens is *

1 point

Convex

Concave

plano-convex

Concavo convex

4.If the focal length is negative then the lens is *

1 point

Convex

Concave

plano-convex

Concavo convex

5.The air bubble in water behave like a *

1 point

Diverging lens.

Converging lens

Mirror

None of these

6.The convex lens is used in *

1 point

Telescope

Binoclars

Microscope

All

7. During refraction, will not change. *

1 point

Wavelength

Frequency

speed of light

all the above

8.Which of the following can acts as converging lens? *

1 point

Biconvex lens

Plano-convex

Concavo convex

All of the above

9.The light ray gets refracted twice through glass slab. The perpendicular distance between incident ray and final emergence ray is called *

1 point

Reflection

Refraction

Lateral shift

Angle of deviation

10.The convex lens behaves like a lens when it is kept in a transparent medium with greater refractive index than that of the lens. *

1 point

Converging

Conversing and diverging

Diverging

All the above

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