Physics Set 1

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Physics Set 1

Physics Set 1

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1) In a Laser (say neon laser) all the atoms emit the light waves of

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2) The width of depletion layer of a P-N junction

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3) The formation of brilliant colors in a thin soap film is a consequence of the phenomena of

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4) The Laser is a beam of radiations which are

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5) What is the phenomenon which established the transverse nature of light ?

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6) The scientist who first sent electromagnetic waves to distant places is 

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7) The wave of theory of light is based on

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8) Fibre optics work on the principle of 

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9) The impurity atoms with which silicon should be doped to make p-type semiconductors are 

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10) When a piece of pure silicon is doped with aluminium, then 

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11) Which of the following phenomenon helps to conclude that light is a transverse wave?

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12) In a bipolar junction transistor

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13) The p wave of a normal Electrocardiogram indicates

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14) Which of the following is used for regulated electric supply ?

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15) Which one of the following is used for sun glasses ?

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16) Optic fibres are used in :

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17) Which of these waves can be polarized ?

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18) The light of distant stars is affected by

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19) The distance between node and adjacent antinode is 30 cm. The wavelength is   

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20) An integrated circuit is more advantages than a coventional circuit because

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21) Which of the following waves cannot be polarised? 

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22) Parabolic mirrors are used in  

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23) A soap bubble shows colours when illuminated with white light. This is due to  

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24) In electronics what comes under tank circuit ? 

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25) Which of the following features of a tunnel diode is its drawback? 

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26) In quantum mechanics a particle is represented by a

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27) Solids which conduct electricity at higher temperature but not at lower temperature are called 

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28) For which Diode is used ? 

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29) Addition of suitable impurities into semiconductor, is called 

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30) Universal gates are

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31) When two semiconductors of p and n-type are brought in contact, they form p-n junction which acts like a/an 

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32) Where is a transistor most likely to be found ? 

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33) Photosynthesis takes place faster in   

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34) The redness in atmosphere at Sunrise and Sunset is due to : 

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35) The complete form of ‘IC’ in electronics is

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36) The material used in the fabrication of a transistor is   

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37) The sky appears blue due to

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38) When a strong beam of light is passed through a colloidal solution, the light will 

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39) A NOT gate can be implemented by: 

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40) Instrument for measuring blueness of the sky or ocean is called ________   

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41) A metal semiconductor junction diode is called ________

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42) What is a compound microscope?

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43) What is colour of light related to ? 

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44) Which one among the following components is used as an amplifying device?

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45) Which one among the following components can not be developed within an ”integrated circuit”?

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46) The wave theory of light can explain 

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47) Purpose of an optical filter is to

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48) Lamberts law is related to 

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49) For which one of the following, ”Diodes” are generally used for?   

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50) Golden view of sea shell is due to

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Fibre optics work on the principle of 
Scattering of light   
Total internal absorption   
Total internal reflection   
Optical rotation
The p wave of a normal Electrocardiogram indicates
Atrial depolarization     
Ventricular repolarization   
Atrial repolarization   
Ventricular depolarization
Parabolic mirrors are used in  
Car headlights   
Driving mirrors   
Dentists mirros   
Shaving mirros 
In a bipolar junction transistor
All the three regions (the emitter, the base and the collector) have equal concentrations of impurity   
The emitter has the least concentration of impurity   
The collector has the least concentration of impurity   
The base has the least concentration of impurity
For which one of the following, ''Diodes" are generally used for?   
Rectification   
Amplification   
Modulation   
Filtration
Which of the following phenomenon helps to conclude that light is a transverse wave?
Interference   
Diffraction   
Polarisation   
Refraction 
Solids which conduct electricity at higher temperature but not at lower temperature are called 
Super-conductor   
Metallic-conductor   
Semi-conductor   
Insulator
The width of depletion layer of a P-N junction
Decreases with light doping   
Increases with heavy doping   
Is independent of applied voltage   
Is increased under reverse bias
The formation of brilliant colors in a thin soap film is a consequence of the phenomena of
Polarization and interference   
Diffraction and dispersion   
Multiple refraction and dispersion   
Multiple reflection and interference
Purpose of an optical filter is to
Reflect lights of different colours   
Dispense light into component colours     
Refract light of different colours   
Transmit or absorb light of different colours
A NOT gate can be implemented by: 
A single diode   
Two diodes   
A single resistor   
A single transistor
Which of the following waves cannot be polarised? 
Radio   
Ultra violet   
Infrared   
Ultrasonic
What is colour of light related to ? 
Amplitude   
Frequency   
Quality   
Velocity
What is a compound microscope?
A microscope that has one lens.   
A microscope that has two sets of lenses : an occular lens and an eyepiece.   
A microscope whose lenses are concave.   
A microscope whose lenses are convex.

Lamberts law is related to 

Reflection   
Refraction   
Interference   
Illumination
Optic fibres are used in :
CAT scans   
X-ray photos   
Ultrasound scans   
Endoscopy 
Which one among the following components can not be developed within an ''integrated circuit"?
Diode   
Triode   
Transformer   
Transistor 
The wave of theory of light is based on
The laws of reflection   
The laws of refraction   
The inverse square law   
Huyghens' principle
When a piece of pure silicon is doped with aluminium, then 
The conductivity of the doped silicon piece will remain the same   
The doped silicon piece will become n-type   
The doped silicon piece will become p-type   
The resistivity of the doped silicon piece will increase
In quantum mechanics a particle is represented by a
Wave   
Wave packet   
Particle   
None of these
The sky appears blue due to
Rayleigh scattering   
Mie scattering   
Back scattering   
None of these
The scientist who first sent electromagnetic waves to distant places is 
James Clerk Maxwell     
Heinrich Hertz   
Thomas Alva Edison   
John Logie Baird
For which Diode is used ? 
Modulation   
Oscillation   
Amplification   
Purification
Which of the following is used for regulated electric supply ?
Zener diode   
Junction diode   
Gun diode   
Tunnel diode
Golden view of sea shell is due to
Diffraction   
Dispersion   
Polarization   
Reflection 
The redness in atmosphere at Sunrise and Sunset is due to : 
Refraction of light   
Reflection of light   
Dispersion of light   
Scattering of light
Where is a transistor most likely to be found ? 
Wrist watch   
Fuse   
Hearing aid   
Fluorescent lamp
Which one among the following components is used as an amplifying device?
Transformer   
Diode   
Capacitor   
Transistor
The impurity atoms with which silicon should be doped to make p-type semiconductors are 
Phosphorus   
Antimony   
Boron   
Germanium
The material used in the fabrication of a transistor is   
Aluminium   
Copper   
Silicon   
Silver
Instrument for measuring blueness of the sky or ocean is called ________   
Bathymeter   
Ceraunograph   
Cyanometer   
Barometer
Which one of the following is used for sun glasses ?
Pyrex glass   
Flint glass   
Crooks glass   
Crystal glass 
Which of the following features of a tunnel diode is its drawback? 
Extremely high frequency response   
Very wide temperature range of operations   
Instability due to negative resistance   
Very low power consumptions
Universal gates are
AND and OR   
OR and NOT   
NAND and NOR   
AND and XOR 
When two semiconductors of p and n-type are brought in contact, they form p-n junction which acts like a/an 
Conductor   
Oscillator   
Rectifier   
Amplifier 
Addition of suitable impurities into semiconductor, is called 
Doping   
Mixing   
Forming   
Diluting 
The light of distant stars is affected by
Interstellar Dust   
The Earth's Atmosphere   
Both A & B   
None of these
In electronics what comes under tank circuit ? 
Resistance and capacity   
Resistance and inductance   
Capacity and inductance   
Resistance, capacity and inductance
The Laser is a beam of radiations which are
Non-coherent and monochromatic   
Coherent and monochromatic   
Non-coherent and non-monochromatic   
Coherent and non-monochromatic 
When a strong beam of light is passed through a colloidal solution, the light will 
Be scattered   
Pass unchanged   
Be absorbed   
Be reflected
Which of these waves can be polarized ?
Sound waves in air   
Longitudinal waves on a string   
Transverse waves on a string   
Light waves
The distance between node and adjacent antinode is 30 cm. The wavelength is   
30 cm.   
90 cm.   
120 cm.   
60 cm.
An integrated circuit is more advantages than a coventional circuit because
They make the electric equipments more reliable and easier for servicing   
A faulty part of a conventional circuit may be difficult to locate and repair   
If a part of the integrated circuit fails the entire circuit is simply replaced   
All of these
What is the phenomenon which established the transverse nature of light ?
Reflection   
Interference   
Diffraction   
Polarisation
A metal semiconductor junction diode is called ________
Schottky diode   
Photo diode   
Tunnel diode   
P-N Junction diode
In a Laser (say neon laser) all the atoms emit the light waves of
Same frequency   
Same amplitude   
Same phase   
All of these
The complete form of 'IC' in electronics is
Internal circuit   
Independent circuit   
Integrated circuit   
Inbuilt circuit 
The wave theory of light can explain 
Comptom effect   
Photoelectric effect   
Black body spectrum   
Interference of light
Photosynthesis takes place faster in   
Darkness   
Red light   
White light   
Yellow light
A soap bubble shows colours when illuminated with white light. This is due to  
Diffraction   
Polarisation   
Interference   
Reflection 
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