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Physics

Physics
What type of lens is used in a magnifying glass

Plano-concave
None of these
Convex
Concave

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Physics
An atom with more neutrons than protons is called

None of these
Element
Isotope
Compound

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Physics
The least penetrating power ray is

Gamma rays
Alpha rays
Beta rays
None of these

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Physics
Waves that are required for long distance wireless communication are

Microwaves
Infrared rays
Radio waves
Ultraviolet rays

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Physics
Compressions and Rarefactions are characteristic of

Neither of A & B
Both A & B
Transverse waves
Longitudinal waves

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Physics
For which one of the following, ''Diodes' are generally used for?

Rectification
Amplification
Filtration
Modulation

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