Question # 1

The rays which are liberated from metal due to collision of fast moving electrons:

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Alpha rays

Beta rays

Gamma rays

x - rays

The mass of Beta particle:

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0

4

2

1

In ........ henry Bequeral discovered.

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1895

1886

1896

1898

Which of the following is a natural fiber:

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Teflon

Cotton

Acrylic

Nylon

Which type of rays are used in the solar system fitted on ships and submarines to find the hidden secrets under water:

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x - rays

C.T Scan

Ultrasound

Light

If we increasing angle of incidence then at a particular angle incidence the angel of refraction is.

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45 ^o

60 ^o

30 ^o

90 ^o

Phosphorous.... and sulphur 35 are employed on living system to trace metabolic path.

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31

30

38

32

Frequency of ultrasound is.

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Less than 20 Hz

20 KHz

30 KHz

More than 20 khn

The charge on alpha particle is:

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1

2

4

6

The light of laser is:

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monochromatic

dichromatic

trichromatic

Tetrachrmatic

Radioactivity occurs naturally from all the elecments with atomic number greater than.

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62

72

80

82

In engineering department besides heavy machinery the role of ....... industry is examplary.

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Cottage

Steel

Electrical

Paper

Element having atomic numebr greater than.......... go on emitting radiations.

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80

92

82

83

Laser is used toproduce three -Dimensional image called.

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Holograms

Holography

Lithotropsy

Radioactive elements

the test that measures the electrical activity of the heart:

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E.C.G (Electrocardiogram)

E.E.G (Electroencephalography)

M.R.I (Magnetic resonance imaging)

Angiography

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