Question # 1

parallel plate consists of 2 metal plates separated by:

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conductor

insulator

wooden plate

plastic foam

Nichrome wire is an alloy of:

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Lead and zinc

Silver and copper

Nickel and chromium

Iron and copper

The speed of waves can be calculated by:

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Vt

d x t

f λ

Tf

Radio waves are:

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Longitudinal waves

Transverse waves

Electromagnetic waves

All of these

The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:

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Absorbed

Totallly reflected

Partially reflected and partially transmitted

Totally transmitted

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

Which form of energy is sound:

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Electrical

mechanical

Thermal

Chemical

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

A thermistor is a dependent resistors:

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Heat

temperature

energy

mass

The sound waves are the example of:

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Longitudinal waves

Transverse waves

Electromagnetic waves

x-rays

The product of frequency (f) and wavelengthλ is equal to:

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Time period

Amplitude

Wave speed

Wave energy / frequency

Electric intensity is a quantity.

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Scalar

Vector

Base

None of these

Power of convex lens is 10 D. Its focal length is:

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100 m

10 m

1 m

0.1 m

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