Physics Form IV - Test

physics test 4 -[Form IV]

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1 ...... is discharge of electrons from the surface of heated metal

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B. Thermionic Emission - CORRECT!

A. Emission

B. Thermionic Emission

C. Radiation

D. Radioactivity

2 .........Are the streams of fast-moving electrons

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D. Cathode Rays - CORRECT!

A. Anode Rays

B. Rays

C. Valency

D. Cathode Rays

3. instrument used to produce cathode rays ..........

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B. Cathode Ray Tube - CORRECT!

A. Anode Tube

B. Cathode Ray Tube

C. C.R.O

D. Tube Emitter

4........ is the display component of the C.R.T

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C. Fluorescent Screen - CORRECT!

A. X Deflection Plates

B. Y Deflection Plates

C. Fluorescent Screen

D. Cathode

5........ Are electromagnetic radiation similar to light

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B. X-Rays - CORRECT!

A. Gamma Rays

B. X-Rays

C. Utraviollet Rays

D. Alpha Particles

6......... and ........ Are the types of X-Rays

D. Hard,Soft - CORRECT!

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A. Strong,Soft

B. Hard,Weak

C. Smooth,Soft

D. Hard,Soft

7........ is the tube used to produce x-rays

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B. The X-Rays Tube - CORRECT!

A. C.R.O

B. The X-Rays Tube

C. C.R.T

D. Tube Emitter

8. Is x-rays that have high frequencies and energy

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A. Hard X-Rays - CORRECT!

A. Hard X-Rays

B. Soft X-Rays

C. Smooth X-Rays

D. Strong X-Rays

9......... used in medical treatment.

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D. Soft X-Rays - CORRECT!

A. Hard X-Rays

B. Cathode Rays

C. Gamma Rays

D. Soft X-Rays

10........ is oneof the application of x-rays

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B. Security Installation - CORRECT!

A. Computer Display

B. Security Installation

C. C.R.O

D. Television

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