Physics Most Important One Liner Question and Answer part -4
Home / Physics Most Important One Liner Question and Answer part -4
Physics Most Important One Liner Question and Answer part -4
With whom is the color of light – frequency
Which compound is most convenient during day and night - red and green
Why can we hear short-wave transmissions better than long-duration transmissions - short-range atmospheric disturbances have no effect
What is the color of emerald (emerald) generally- dark green
What is the tangency of the visible spectrum - 3900Å – 7600Å
Lambert's rule is related to- Illumination
Which lens is used to correct the defect of blindness- Cylindrical lens
Which form of friction angle and repose angle are - equal to each other
On what phenomena are optical fibers based - complete internal reflection
Eclipse is caused by which optical phenomenon – diffraction
For what purpose is a very bright light in the lighthouse - to guide and warn the ships coming from different directions in the sea.
A person wears glasses with a concave lens, because of this, where is the image of distant objects usually focused in their eyes - in front of the retina
How does the microscope used in pathology laboratories make images - magnified, virtual, erect
Using photography at night and in fog and fog is possible using- infrared radiation
In what colors can a blind person differ - red and green
Initially the radiation in a fluorescence tube is -
It is dangerous to see solar eclipse with naked eyes because - ultraviolet radiation coming out of the sun burns our retina.
Which waves cannot be transmitted through vacuum- sound waves
If an ordinary glass tube and a glass capillary tube are both poured into a beaker of water, in which water will rise - only in the glass capillary tube
Long vision can be corrected by the use of - by convex lenses
Whose thin layer is coated on the back page of the mirror - Silver nitrate
In what form does a lightly plane surface reflect a beam of light - in the form of diffused beam in all directions
Light waves are transverse waves because- they can be polarized.
The organ with the highest refractive index is- the lens.
A man cannot see from 10 meters away from which disease- myopia
What is the shape of the shaving- Concave
N.T. What type of head mirror is used by doctors – concave
Which of the following is produced by conversion of solar energy using light voltage cells - electric energy
The ultraviolet light of the Sun's radiation does not reach the Earth's atmosphere due to its layer- Ozone
Why are white clothes cooler than black clothes - they reflect whatever light reaches them.
What are the main colors in photography - red, blue, green
Black body can absorb whose radiation- all wavelengths
Those bodies, which are good absorbers of heat, have other properties as well - good radioactive
What is wavelength when black body radiation reaches the highest state - decreases with increasing temperature.
X-ray fields are located between the gamma- ray and ultraviolet regions.
Most of the electric power used in fiber type light bulbs is- manifested as infrared rays.
Why red lights are used as traffic signals to stop traffic - they are the least scattered
The reason why the star appears twinkling in the sky - refraction of light by the atmosphere
When a strong beam of light passes through a colloidal solution, the light will – disperse
Which radiation has the lowest wavelength - ϒ rays
The principle behind the stability of vision is the theory behind- Cinema
Who discovered the electromagnetic form of light – Maxwell
What is the time of exhalation required to take a photograph of a substance - the brightness of the substance
Is the color disc test function of Newton responsible for the - stability of vision
Which layer of the Earth's atmosphere contains ozone layer – stratosphere
What will be the boiling point of water in mountainous areas - less than the sea water
The reason why the star appears twinkling in the sky - refraction of light by the atmosphere
When a strong beam of light passes through a colloidal solution, the light will – disperse
Which radiation has the lowest wavelength - ϒ rays
The principle behind the stability of vision is the theory behind- Cinema
Who discovered the electromagnetic form of light – Maxwell
What is the time of exhalation required to take a photograph of a substance - the brightness of the substance
Is the color disc test function of Newton responsible for the - stability of vision
Which layer of the Earth's atmosphere contains ozone layer – stratosphere
What will be the boiling point of water in mountainous areas - less than the sea water
In which process is the transmission of heat through the actual motion of molecules from high temperature to low temperature – Convection
Even after sunset, due to which the air near the surface of the earth keeps getting heat - terrestrial radiation
Which device (instrument) can be used to detect radiative heat - thermoelectric mass
Which law of thermodynamics says that the heat of a high-temperature object cannot be transferred from a low-temperature object without the help of any external factor - 2nd
Burning by steam is more painful than boiling water. Because - steam contains latent heat.
If an inert and an inertial engine are working between the limits in front of the heat, - the efficiency of the inertial engine will be higher than the inertial engine.
The first law of thermodynamics is generally related to the matter - conservation of energy
Even after sunset, what causes the air near the surface of the earth to receive heat - terrestrial radiation
The commonly used plastic material for making gear heels is -
Which is used in closed- oven (micro-wave)
What causes the continuous creation of energy in the Sun- nuclear fusion
Different colors of different stars are due to the variation of – temperature
Whom is made by - water vapor at low temperature
How does refrigeration occur in the refrigerator- by the volatile liquid
By keeping the Saint open in one corner of a room, its scent spreads to all parts of the room. What is the reason for this – diffusion
How the heat of the Sun reaches the Earth - by radiation
When two cubes of ice (cubes) are pressed on top of each other, they join to form a cube - covalent attraction
Why it seems that strong wind is hurling large fires in the open-Why the surrounding hot air rises and cold air enters and has the effect of kindling the fire.
Energy emitted by the Sun is due to- nuclear fusion.
Energy in ultraviolet rays is more than what- infrared rays
The parachute comes down slowly, while the stone thrown from the same height comes faster - the surface area of the parachute is more, so the air resistance is more
Which instrument is used to measure humidity- Sling cyclometer
If there is a sudden increase in the temperature of a place, the immigrant humidity -
Water pipes are often broken in cold winter nights in mountainous places, because - the water inside the pipe becomes snowy and spreads and the pipes burst.
Why a two thin shirt can keep us warmer than a thick shirt in the winter - the air layer between two shirts acts as an anti-aging medium.
What is called horizontal heat transfer inside the atmosphere - Convection
Cloudy nights are warmer than clean nights, because - clouds mainly reflect the heat given by the Earth.
Lakes freeze in winter in cold countries, except water below - at 4 ° C.
The amount of water vapor in the atmosphere is measured - in the form of humidity
Which has the highest specific heat value- Water
By whom is the high temperature required to ignite fuel in a diesel engine - by compressing the air in the cylinders
When the vapor pressure becomes equal to the atmospheric pressure, what is the effect on the fluid - the fluid starts boiling
The temperature whose reading is the same on both Fahrenheit and Celsius scales - 40 ° C
A body absorbs heat the most when it is - black and rough
Water is used in hot water bags because - its specific heat is high.
Mercury is commonly used in thermometers because - it has high conductivity.
Why water is not suitable as a calorimetric material - it has high specific heat.
Why the bottom of the cooking utensil is left black - Black surface is good absorber of heat
Gas thermometers are more sensitive than liquid thermometers because - the diffusion coefficient of the gas is high.
What is a white and smooth surface - bad absorber of heat and good reflector
What material is used in electric heater- nichrome
A water tank appears shallower when it is viewed from top due to – Refraction
Magnetism at the centre of a bar magnet is – around zero
When a ship enters the sea from a river – it rises a little
Which technique is used to detect the objects on or under the surface of the water – SONAR
