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Objective Questions For Competitive Exam – Test Paper 5

Physics Objective Questions

Physics Objective Questions For Competitive Exams

Physics Most Frequently Asked Questions

Physics Test Paper – 5

 

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To preserve food for long duration, __________ is used

Sodium Chloride

Sodium Benzoate

Sodium Dizoate

Sodium Benzoate

Which lens used to see minute particles of ears,nose and throat( ENT Doctor)

Convex lens

Microscope lens

Concave lens

Concave lens

To detect fake notes, we use

X rays

UV rays

IR rays

UV rays

Which rays are used to night vision

X rays

gamma rays

Infrared rays

Infrared rays

Magnitude of diffraction of light is depends on

Size of the obstacle

Wave length of the light wave

Angle of beam of the light ray

All the above

All the above

Sun glasses works on the principle

Polarization of light

Diffraction of light

Refraction of light

Polarization of light

Bending of light rays around the smaller obstacles is called

Refraction

Di fraction

Reflection

Di fraction

Units of focal power

cm

Dioptre

mtrs

Dioptre

Radio waves are

Electromagnetic waves

Mechanical waves

Magnetic Waves

Electromagnetic waves

____________ energy laser rays are used to take 3D photograph

High

Low

Medium

Low

Mirrors are based on the property of

Reflection of light

Refraction of light

Both

Reflection of light

_________ is clotted on backside of mirror

Silver anomide

Silver bromide

Silver trimide

Silver bromide

Mirrors used in vehicle( driver mirror)

Concave mirror

None of the above

Convex mirror

Concave mirror

To kill bacteria in milk and water, which of the following rays are used

UV rays

Infrared rays

Gamma rays

UV rays

The minimum distance to see the object clearly is Least distance distinct vision( LDDV)

25 cms

15 cms

20 cms

25 cms

 

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