Question # 1

The deflection image due to oblique centric rays failing on the lens is called.

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Coma

Spherical aberration

Astigmatism

Curvature of image field

Which is defined as the ration of image height of the object height.

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Linear magnification

Angular magnification

Magnifying power

Resolution

The branch of medicine which deals with the anatomy physiology and diseases of the eye

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Ophthalmology

Radiology

Cardiology

Andrology

Which scientist made the fist successful terrestrial measurement of the speed of light

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Isaac Newton

Ole Romer

Armand Fizeace

Albert Michelson

Parallel rays of light are focused by a thin convex lens.A thin concave lens of the name focal length is then joinjed to the convex lens The focal point will.

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Shift to infinity

shift towards the lens by a small distance

shift away from he lens by a small distance

Remain at its original position

The point midway between the lens surface on its participial axis

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Optical centre

Principal focus

Focal plane

Focal length

Which of the following be used for redeciding mechanical aberration is optical instruments.

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Plane mirrors

Spherical mirrors

Concave lenses

Plano convex lenses

Light rays after passing through is concave lens.

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Bend away from principal axis

Bend towards principal axis

Remain undeviated

Travel parallel to the principal axis

Optics is the

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Scientific study of light and vision

Scientific study to sound

Scientific study of time

Scientific study of fluid

When the angel of incidence becomes larger than the critical angle no refraction occurs This is known is.

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Diffraction

Refraction

Total internal reflection

Diffuse reflection

The relation between angle of incidence and angle of refraction is known as.

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Snell's law

Refractive index

Index of refraction

All of the above

In compound microscope, image formed by the eyepiece is

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Real

Invented

Erect

Diminished

A Fly is found to be sitting on a telescope when it is focused towards the moon What effect is expected on the photograph of the moon.

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Intensity remains unchanged

No effect

The complete field of view is blocked

Coloured image will be seen

When an obliquely falling ray of light enters from one medium ot another it changes its path this phenomenon is called.

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Reflection

Refraction

Diffusion

Diffraction

Monochromatic light passing through a thick prism is.

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Polarize

Disperesed

Diffracted

Deviated

Which type of microscope was the first to be developed.

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Optical microscope

Digital microscope

Electron microscope

All were developed at the same time

Why does a glass plate inside a colorless liquid become invisible

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The colours of both are same

The densities of both are same

Their refractive indices are same

Their refractive indices are different

The maximum distance between an object and its real image in case of convex lens is

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f

2f

2.5 f

4 f

A young man wearing glasses does not require bifocals because he

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Is farsighted

Has the ability to accommodate

Is short signed

Does not suffer from coma

linear magnification is the ratio between the

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Distances of object and image from mirror

Distances of object and image from the focal point

Distance of image and object from the mirror

Distance of image from object and the distance of object from mirror

When of the following colours scatters minimum.

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Blue

Violet

Yellow

Red

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