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 Steam has latent heat

Steam produces more severe BURNS than BOILING water even THOUGH both are at 100^oC because steam CONTAINS more heat, in the form of latent heat, than boiling water.

 SCATTERING of shorter wavelengths of sunlight in the atmosphere

BLUE LIGHT is scattered in all directions by the tiny MOLECULES of air in EARTH's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. Closer to the horizon, the sky fades to a lighter blue or white.

 HIGGS BOSON

"GOD PARTICLE" is Higgs Boson.

 Nine TIMES

L = inductance is proportional to the number of turns PER UNIT length. So self inductance becomes THREE times. if turns in a coil is trippled, self inductance BECOME nine times.

 Solids

We KNOW that, in solids all the particles are packed together and hence sound can travel from ONE to one very fast. Hence, SPEED of sound is maximum in solids and decreases from solids to liquids and liquids to GASES. Sound can't travel through vacuum.

 80 J

It takes 80 CALORIES to melt 1 gram of ICE. If 1 g of ice (at 0 degrees Celsius) is given 80 calories, it will melt and the FINAL temperature of the water will be 0. Freezing water at 0 degrees Celsius: It also takes 80 calories to freeze 1 gram of water.

 BURNISHING

Gear FINISHING OPERATION is CALLED burnishing.

 Frequency

Frequency of LIGHT remains UNCHANGED when light TRAVELS from vaccum enters water.

 RAYLEIGH SCATTERING

The sky appears BLUE DUE to Rayleigh scattering.

 Should be made of a good CONDUCTOR like copper with sharp-pointed EDGES

To prevent damage from lightning, lightning conductors are used on TALL structures. The lightning conductor should be made of a good conductor like copper with sharp-pointed edges.

 Wind velocity

An anemometer is an instrument that measures wind SPEED and wind PRESSURE. Anemometers are IMPORTANT tools for meteorologists, who study weather PATTERNS. They are also important to the work of physicists, who study the WAY air moves.

 Flemings left HAND RULE

In a MAGNETIC FIELD, the direction of motion of a current carrying CONDUCTOR is given by Flemings left hand rule.

 NEUTRAL

A WIRE CARRYING CURRENT is neutral.

 Increase

The METAL ball can be considered to be made up of several layers of thinner ONES. On heating each of these layers will increase in RADIUS. As the inner most layer ALSO increases its radius, the VOLUME inside it i.e, the volume of the hollow portion will also increase.

 Coulomb

ELECTRIC charge has the dimension electric current time. The SI derived UNIT of electric charge is the coulomb, which is defined as an AMPERE second.

 Persistence of vision

A Newton DISC can be created by PAINTING a disc with the seven different colours. A combination of red, green and BLUE in the circular disc will yield the same result. This is DUE to the PHENOMENON called persistence of vision.

 11 Km/Sec.

A spacecraft leaving the SURFACE of Earth, for example, needs to be going about 11 kilometers (7 miles) PER second, or over 40,000 kilometers per hour (25,000 miles per hour), to enter orbit. ACHIEVING ESCAPE velocity is one of the biggest challenges FACING space travel.

 TURBULENCE caused by wind.

The main theory of swing bowling SURROUNDED turbulent and laminar airflow. Laminar air separates from the surface of the ball earlier than turbulent flow air, so that the separation point moves toward the FRONT of the ball on the laminar side. On the turbulent flow side it remains towards the back; INDUCING a greater lift force on the turbulent airflow side of the ball. The calculated net lift force is not enough to account for the amount of swing observed: ADDITIONAL force is provided by the pressure-gradient force.

 VISCOSITY and BUOYANCY

Bubbles of air rise up through LIQUIDS DUE to viscosity and buoyancy.

 Magnetic field

A MOVING CHARGED PARTICLE PRODUCES a magnetic field.

 At a higher level in water

DENSITY of water is APPROX 1g/ml; Density of ICE is approx 0.93g/ml; and Density of 100% pure ethanol is 0.79g/ml. So the density of ice cubes is lesser than water, but higher than alcohol. So it will float in water, but sink in alcohol. This can also be put as: The ice cube will float higher in water as compared to alcohol.

 Ionosphere

Ionosphere REFLECT back the radio WAVES to the EARTH's surface.

 THOMSON effect

Due to temperature VARIATION along a conductor, potential variation occurs along it. This PHENOMENON is known as Thomson effect.

 SPEED X TIME

Formula for DISTANCE is speed x time.

 Increases

When a metal PLATE with a CIRCULAR hole at its centre is heated, definitely along with the areal EXPANSION of the plate the diameter of the circular hole also increases. Using the differential equations of COEFFICIENTS of expansions, we find that the hole radius increases at the same LINEAR rate as the metal.

 Asymmetry of potential ENERGY CURVE

Thermal EXPANSION of MATERIALS ARISES from asymmetry of potential energy curve.

 INCREASING the focal LENGTH of the eyepiece

Increasing the focal length of objective increases the magnifying POWER of the telescope. Increasing the focal length of the eye-piece DECREASE the magnifying power of telescope.

 Scattering of light

The red colour in the sky at sunset (and sunrise) is DUE to an EFFECT called Rayleigh scattering. There is a SIMILAR form of scattering called MIE scattering which is responsible for the white colour of CLOUDS.

 REAR VIEW MIRROR

Convex mirror is GENERALLY USED in rear view mirror.

 2 BETA 1 alpha

2 beta and 1 alpha emitted by radioactive ELEMENT after 3 consecutive DISINTEGRATION.

 Fossils

Radiocarbon DATING technique is USED to ESTIMATE the AGE of fossils.

 Fall into his hand

The BALL is THROWN in vertically upward direction and GIVEN that the train is moving up with a constant velocity. Therefore, the horizontal velocity of the train and ball are both same. And, the ball TRAVELS the same horizontal distance as that of the train. Therefore, the ball will come back into the hands of THROWER.

 Both A & B

Momentum is RELATED to MASS and VELOCITY.

 VIRTUAL image

A virtual image is FORMED when REFLECTED rays appear to meet. Such images cannot be obtained on screen. PLANE mirrors, CONVEX mirror and concave lens always forms virtual image.

 Vacuum

Light travels FASTER in vacuum as compared to any other medium. This is because there is no obstruction in the propagation of light in vacuum as there is no MATTER in vacuum and also, because the REFRACTIVE INDEX of vacuum is the lowest i.e. equal to unity.

 NEWTON's third LAW

Newton's third law supports this statement.
When the wooden BLOCK is not resting against a support, the block and nails both MOVE forward on being hit with a hammer. However, when the block is held firmly against a support, and the nail is hit, an equal reaction of the support DRIVES the nail into the block.

 PERPENDICULAR to the DIRECTION of APPLIED FORCE

The direction of torque is perpendicular to the direction of applied force.

 Guglielmo Marconi sent out the first wireless signals

Guglielmo Marconi sent out the first wireless signals. In the early summer of 1895 and despite an intervening hill, Marconi achieved signal transmission and reception over a distance of about 2km. Success was indicated initially by the waving of a HANDKERCHIEF and progressed to the need to fire a gun. The theory of relativity transformed theoretical physics and astronomy during the 20th century. When first published, relativity superseded a 200-year-old theory of mechanics stated by Isaac Newton. In 1900 Max Planck made a profound discovery in modern physics / Quantum Theory. He showed (from PURELY formal / mathematical foundations) that light must be emitted and absorbed in discrete amounts if it was to correctly describe OBSERVED phenomena (i.e. Blackbody radiation). The Wright brothers, Orville (August 19, 1871 – January 30, 1948) and Wilbur (April 16, 1867 – May 30, 1912), were two American brothers, inventors, and aviation pioneers who were credited with inventing and BUILDING the world’s first successful airplane and making the first controlled, powered and sustained heavier-than-air HUMAN flight, on December 17, 1903.

 Photons

According to the quantum theory of light, ENERGY of light is CARRIED in DISCRETE units CALLED photons.

 COUPLE ACTING on a BODY

ML²T^-2 is the DIMENSIONAL FORMULA for couple acting on a body.

 CONVECTION

Heat is TRANSFERRED in the liquid and gases from a region of higher temperature to a region of lower temperature. Convection heat TRANSFER occurs PARTLY due to the actual movement of molecules or due to the mass transfer.

 2 metres

The potential ENERGY of a body when RAISED through height h is given by mgh. Each TIME, a normal rubber ball hits the floor, it loses one-fifth of its total energy and the rebound height is proportional to energy, so each BOUNCE will rebound to four-fifth of the previous bounce. But, the question states that there is no loss of energy/velocity after rebounding. So the height of 2 metres will be MAINTAINED.

 The SPEED of all GAS MOLECULES is same

"The speed of all gas molecules is same" is not a TRUE STATEMENT.

 Magnetic wave

Magnetic resonance imaging (MRI), nuclear magnetic resonance imaging (NMRI), or magnetic resonance tomography (MRT) is a medical imaging technique used in radiology to visualize internal structures of the body in DETAIL. MRI MAKES use of the property of nuclear magnetic resonance (NMR) to image nuclei of atoms inside the body. An MRI scanner is a device in which the patient lies within a large, POWERFUL magnet where the magnetic field is used to align the magnetization of some atomic nuclei in the body, and radio frequency fields to systematically alter the alignment of this magnetization. This causes the nuclei to produce a rotating magnetic field detectable by the scanner—and this information is recorded to CONSTRUCT an image of the scanned area of the body.

 Ultrasonic

Only transverse waves (such as radio, ultraviolet and INFRARED waves) can be polarized since their vibrations can potentially OCCUR in all DIRECTIONS perpendicular to the direction of travel. It is therefore possible to confine the vibrations to a single plane. However, SOUND waves are longitudinal in which vibrations are parallel to the direction of travel of the WAVE. The vibrations of a longitudinal wave occur along a single line, it is therefore not possible to confine that to a plane. So it cannot be polarized.

 Pressure gradient FORCE

The force that generates WIND is pressure gradient force.

 ALBERT Einstein

In 1905, Albert Einstein determined that the laws of physics are the same for all non-accelerating OBSERVERS, and that the speed of light in a vacuum was independent of the motion of all observers. This was the THEORY of special RELATIVITY.

 SPIRAL

The SHAPE of our MILKY WAY GALAXY is spiral.

 Pressure of air

Assuming air to be an IDEAL gas, the SPEED of sound DEPENDS on TEMPERATURE only. As air temperature increases, so does the speed of sound and vice versa. The speed of sound is COMPLETELY independent of air pressure because the air pressure and air density are proportional to each other at the same temperature.

 60 DB to 80 db (decibel)

The ordinary and MAXIMUM tolerance LIMIT of SOUND by HUMAN being is 60 db to 80 db (decibel).