Physics Exam Material Part 1
Physics Questions Short Tips
Persistence of Vision is the Principle behind - Camera
The Weight of a body is - Maximum at the Poles
Ball Pen works on the principle of - Capillarity and Surface Tension
At what temperature a body will not radiate any hear energy ? -- > -273 degree C
In a Standing wave the distance between a node and adjacent antinode is
A Telescope and Microscope differ in that - Telescope has objective of large focal lengths and eyepiece of smaller focal lengths
The center of the Newton's rings pattern is dark since - the light undergoes a phase change
Galvanometer can be converted into a voltmeter by using - a high resistance in series
The apparatus used in submarines to give clear view of the objects on the surface of the ocean or ground is known as - Periscope
Which metal is commonly used for making an electromagnet ? - Iron
Kilowatt-hour is a unit of - Power
Choke is used to - reduce the current in AC circuit
The ozone layer protect us from - Ultra Violet rays
Einstein got the Nobel Prize for - Photo-electric effect
Asia's biggest astronomical telescope is at - Kavanur
Gas Law was given by - Boyle
Growth of the body in the uterus is found using - Ultra sound
The forms of matter are - 3
The weather map telecast in T.V is photographed by the satellite orbitting a height of - 36,000 k.m
The unit of work and energy is - Joule
The normal boiling point of a liquid is the temperature at which - the vapour pressure of the liquid is zero
The shining particles seen in the path of beam - scattering of light by dust particles in the path of the light
"Decibal" is a unit of - Sound Intensity
An example of semi - conductor is - Germanium
Unit of charge is - Coulumb
Important Points :
Copernicus - Heliocentric theory
Kepler - Laws of planetary motion
Galileo - Moons of jupiter
Newton - Law of gravitation
Which an object is transferred from the moon to the earth - its weight increases and its mass remains constant on the earth
Important Points :
Persistence of Vision is the Principle behind - Camera
The Weight of a body is - Maximum at the Poles
Ball Pen works on the principle of - Capillarity and Surface Tension
At what temperature a body will not radiate any hear energy ? -- > -273 degree C
In a Standing wave the distance between a node and adjacent antinode is
A Telescope and Microscope differ in that - Telescope has objective of large focal lengths and eyepiece of smaller focal lengths
The center of the Newton's rings pattern is dark since - the light undergoes a phase change
Galvanometer can be converted into a voltmeter by using - a high resistance in series
The apparatus used in submarines to give clear view of the objects on the surface of the ocean or ground is known as - Periscope
Which metal is commonly used for making an electromagnet ? - Iron
Kilowatt-hour is a unit of - Power
Choke is used to - reduce the current in AC circuit
The ozone layer protect us from - Ultra Violet rays
Einstein got the Nobel Prize for - Photo-electric effect
Asia's biggest astronomical telescope is at - Kavanur
Gas Law was given by - Boyle
Growth of the body in the uterus is found using - Ultra sound
The forms of matter are - 3
The weather map telecast in T.V is photographed by the satellite orbitting a height of - 36,000 k.m
The unit of work and energy is - Joule
The normal boiling point of a liquid is the temperature at which - the vapour pressure of the liquid is zero
The shining particles seen in the path of beam - scattering of light by dust particles in the path of the light
"Decibal" is a unit of - Sound Intensity
An example of semi - conductor is - Germanium
Unit of charge is - Coulumb
Important Points :
Copernicus - Heliocentric theory
Kepler - Laws of planetary motion
Galileo - Moons of jupiter
Newton - Law of gravitation
Which an object is transferred from the moon to the earth - its weight increases and its mass remains constant on the earth
Important Points :
Energy - Kilwatt.hour
Invar- Balance wheeel in watch
Force - Newton
Surface tension - Newton/m
Surface tension - Newton/m
Important Points :
Burning Glass - Convex mirror
Lift of aeroplane - Bernoullis principle
Name the 4 planets in order wise
Venus-Mars-Jupiter-Uranus
Important Points :
Exosphere --- Earths atmosphere about 400 km. above the earth surface
Magnetosphere --- Space surrounding the earth or any celestial body
Photosphere --- Visible portion of the sun
Stratosphere --Earths atmosphere about 11 km. above the earth surface
Correct order of four electro magnetic waves of different wave lengths are given
Microwaves, Infrared, Ultraviolet and X-rays.
Important Points :
Gonio meter - Apparatus for measuring angles
Hypsometer - Apparatus of measuring altitude
Manometer - Apparatus for measuring density of liquids
Pyknometer - Apparatus for measuring density of liquids
Atom bomb is based on the principle of - Nuclear fission
Important Points :
Actinometer - for measuring the intensity of electromagnetic radiation
Anemometer - for measuring the speed of wind
Atmometer - for measuring the rate of evaporation of water
When a wave goes form one place to another it transport - energy
A 100 watt bulb will consume on unit of electrical energy in - 10 hours
The solar system belongs the galaxy called - Milky way
In an electrical bulb, a little nitrogen or argon is introduced at low pressure to -- cool the hot filament
An artificial satellite can be tracked very precisely from the earth by using - Doppler effect
Important Points :
Range of Audio frequency - 20Hz
Range of AC frequency - 50Hz
Range of radio frequency - Kilo Hz
Range of TV frequency - Mega Hz
The sudden fall of atmospheric pressure indicates - Storm
Which one of the following layers of the atmosphere is responsible for the reflection of radio waves ? - Ionosphere
Television was discovered by - J.L.Baird
On adding a little antimony to germanium we get - n-type semiconductor
X rays : are electromagnetic radiations and have shorter wave lengths
Gemini is : a twin star and the third sign of the zodiac
Which one of the following layers of the atmosphere is responsible for the reflection of radio waves ? - Ionosphere
Television was discovered by - J.L.Baird
On adding a little antimony to germanium we get - n-type semiconductor
X rays : are electromagnetic radiations and have shorter wave lengths
Gemini is : a twin star and the third sign of the zodiac
Important Points :
Sonar - for locating the submerged objects
Which of the following waves / rays are produced by nuclear changes in the atom ? - Gamma Rays
Artificial satellites are used for - TV transmission, Detecting minerals, Space research
Sound travels at maximum speed in -- steel
The maximum lengths of a plane mirror in which a person can see himself in full length should be - nearly half of his height
Important Points :
Bohr - Model of hydrogen atom
Einstein - Photoelectric effect
Chadwick - Neutron
De Broglie - Matter Waves
If you walk towards a plane mirror at a speed of 10cm/s at what speed does your image approach you? - 10cm/s
The normal temperature of human body on the kelvin scale is -- 310
Important Points :
Heavy water ( D2O) could help by protecting polio vaccine from the effects of tropical heat since it helps vaccines to keep cool
The relay satellite transmits the TV programme continuously from one part of the world to another
A man inside an artificial satellite feels weightlessness
We see only one side of the moon all the time
Electron microscopy is advantageous because - much greater resolution is possible
The Phenomenon which cannot be explained by wave theory is - photo electric emission
The size of the atomic nucleus is - 10-14m
The half life of a radioactive sample is 20 minutes. What fraction of the sample will remain undecayed after 80 minutes? - 1/16
Electrons can be accelerated to very high energies by means of - betatrons
Hydrogen bomb involves the principle of - Nuclear fusion
Who discovered X-rays ? - Roentgen
Polariods are used in - photo - elasticity
Pure silicon is used in - Electronics industry
The lowest level energy band in a solid is called - valence band
Important Points :
A simple pendulum experiment cannot be performed in a satellite
The simple pendulum inside the satellite will be in a state of zero gravity
Ice is slippery, when a man walks on it , for - increase of pressure causes ice to melt
When a vehicle passes, TV reception gets distorted due to - spark plug creating electromagnetic disturbances
The escape velocity of a projectile from the earth is approximately - 11.2 km/s
Why do rain - bearing clouds look black? - the large number of water droplets in the absorb all the sunlight
The sky in blue in color because of - the scattering of light by dust particles or air molecules
Sound waves in air are - longitudinal waves
The density of pure water will be - maximum at 4oC
Penetrating power is greater in the case of - Gamma Rays
Radioactive substances emit - Alpha, beta, Gamma Rays
X-rays cannot penetrate through - lead
Who discovered that the earth moves round the sun ? - Copernicus
Planet nearest to the sun is - Mercury
A raw egg and a boiled egg of the same appearance, same size and same mass can be distinguishes, without breaking, by using - Inertia of Motion
Nib of a pen is split keeping in view the phenomenon of - Capillarity
Speeds of bodies exceeding the speed of sound are called - Supersonic speed
Refractive index is highest for - diamond
The splitting of a beam of white light into its different colours is know as - Dispersion
In winter, the temperature are the readings of a centigrade and fahrenheit thermometers the same?
---> -40oC
Which of the following electronic devices is used for digital displays in electronic calculators ? - LEDs
Which one of the following substances is non-magnetic ? - glass, wood, silver
According to Newtons formula, the velocity of sound in a medium is --
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