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Difference Between Reflection and Refraction. The PHENOMENON of a light beam rebounding after hitting a surface is calledreflection. ... There's another phenomenon called refraction. Here, the light CHANGES DIRECTION, or 'bends' as it PASSES through the boundary between these TWO media.


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(B)both CONVEX as both of them have a POSITIVE FOCAL LENGH

Roadway patterns are very essential in the development of the settlements of a city. However, recent development in cities does not give importance to the STUDY of the ROAD patterns that give rise to NUMEROUS roads that are not interconnected, housing SCHEMES and commercial developments built far AWAY where roads are very distant from the center of the town.

The THINGS which give us HEAT and ENRGY when it burns in present of OXYGEN. most common source of fuel is COAL, petroleum ,lpg water gas, hydraulics power ,cng etc.

Addition of harmful and UNDESIRABLE SUBSTANCE in air is CALLED air pollution the harmful SUBSTANCES which pollutes the air are called pollutants

<P>Pressure = 1.5 atm

= 1.5x10 raise to power 1.5  Pa

Volume

V = 60 cc

= 60x10 raise to power –6 m raise to power 3

Time:  

T=1 s  

Power:  

P= w/t  

= pv/t  

= (1.5x10 raise to power 5) (60x10 raise to power minus 6)/1  

You can solve this to get the ANSWER

A, as it slides it GAINS VELOCITY which increases KE , as it comes down it's HEIGHT decreases which decreases PE

EXPLANATION:

GIVE me this QUESTION SOLUTION

Those pollutants which can be broken down into simpler, harmless, substances in nature in due course of time (by the action of micro-organisms like certain bacteria) are called biodegradable pollutants. Domestic wastes (garbage), urine, FAECAL matter, SEWAGE, agriculture residues, paper, wood, cloth, cattle DUNG, animal bones, leather, wool, VEGETABLE stuff or plants are biodegradable pollutants.

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here is your ANSWER⤵️⤵️


The substance which are responsible for POLLUTION are called pollutants

The WATER pollutants like :


oil

Grease

These are sometimes directly RELEASED to water bodies

so, water is effected here.


Hope my answer HELPS you

Lens is concave therefore,
focal LENGTH = -15 CM
image distance, V = -10 cm
we know that , 1/f=1/V-1/u
therefore , answer is u= -30 cm.
hope I am right

Definition of soil texture. Textureindicates the RELATIVE content of PARTICLES of VARIOUS sizes, such as sand, silt and clay in the soil. Textureinfluences the ease with which soil can be worked, the amount of water and air it HOLDS, and the RATE at which water can enter and move through soil

The EQUATION of a line is TYPICALLY written as y=mx+B

A linear equation can be expressed in the form . In this equation, x and y are coordinates of a point, m is the slope, and b is the y-coordinate of the y-intercept. Because this equation describes a line in terms of its slope and its y-intercept, this equation is called the slope-intercept form.

Equipotential LINES are like contour lines on a map which trace lines of equal altitude. In this case the "altitude" is electric potential or voltage. Equipotential lines are ALWAYS perpendicular to the electric field. In THREE dimensions, the lines form equipotential surfaces.


















A flow line, used on a DRILLING rig, is a large DIAMETER pipe (typically a section of casing) that is connected to the bell nipple (under the drill floor) and extends to the possum belly (on the mud tanks) and acts as a return line, (for the drilling fluid as it comes out of the hole), to the mud tanks.

According to WORK k.energy theorem

Work done by force equals CHANGE in k.e

So

W=0.5*20(4–25)

W=-210joule

ANSWER with CORRECT SOLUTION

If we measure the TENSION of STRING at the lowest point.

Tension of sring(T) = MASS pf the block.

Tension = MG

= l0N

The electric MOTOR generator works on a principal NAMED electromagnetic INDUCTION. discovered by Michael Faraday in 1831. Feraday discovered as above flow of electric charges is inuced by moving an electrical conductor. such as a WIRE that contains electric CHARGE in a megnetic field.

Dear student
a perfectly black body is one which absorbs radiation of all wavelength INCIDENT on it its ABSORPTANCE is unity as it NEITHER reflect nor transmits any radiation.

in ferry blackbody the radiation inside the enclosure whose inner walls are maintained at constant temperature has the same properties as black body radiation. and most of ENERGY entering through small hole of ferry blackbody is absorbed (99%)

A) the EARTH remains STATIONERY while the ball MOVES upwards

I HOPE it HELPS you

The answer is POINTED heel

we know that the pressure of a body is given by force acting over a given AREA
this SHOWS that the pressure is inversely proportional to the area i.e the LESS the area over which the force is acting the GREATER is the pressure

✺the ACTION of delaying or slowing the PROGRESS or development of something.

IN SCIENCE
✹The NEGATIVE acceleration is also CALLED retardation

Veator QUANTITY ……

vector quantityimplies the physical quantity which COMPRISES of both magnitude and direction

eg

…… VELOCITY , DISPLACEMENT .

Magnitude— the study of MOTION distance, velocity, speed and mass expressed as quantities — is DIVIDED between vectors and SCALARS. A one-dimensional scalar is DESCRIBED by its magnitude ALONE,

Volume/Mass is the answer

HOPE IT HELPS

:)

0.1mg. WT =10× 0.1 ×10^-6=10^-5kg

So we are given

10^-5=g*40*15/20*10^-4

10^-5*10^-4×2/3=g

g=6.55*10^-11

TIME OF JOURNEY =5SECOUND

HEIGHT = 125m


✺ TOTAL DI STANCE =

125+125=250m


✸REASON✍✍✍

Object first go upward

and then fall BACK so total DISTANCE is addition
of both length

✺ TOTAL DISPLACEMENT


0

✷REASON ✍✍✍✍

DISPACEMENT is a VECTOR quantity it has


direction and magnitude


so
when body fall back then it is opposite

in direction.






✺ AVERAGE SPEED



















✺AVERAGE VELOCITY

Here is ans


RETRACE IT PATH


NOT E ⇨⇨

if we fall a light on a MIRROR it mean INCIDENT
angle is zero and we all know

according to law of ✨REFLECTION ✨




SO

angle of reflection is ALSO zero

=>>>>>

light went BACK to it same path

Thismethod, DEVELOPED by A. Casagrande, DETERMINES 100% U on semi LOG plot of laboratory TIME consolidation curve by THEORETICAL curve between U and logTv.

YES WE USE WATER IN BAROMETER


BUT

⇨⇨⇨

mercury is better than water


REASON✍✍✍



✱ Mercury has a very low vapor PRESSURE  when COMPARED to that of water. So it is more sensitive than water to the changes in the atmospheric pressure and rises more QUICKLY to record the changes in the atmospheric pressure.



DISADVANTAGE OF USEING WATER IN A BAROMETER⇨⇨⇨


A barometerusing water, for instance, would needto be 13.6 times taller than a mercury barometer to obtain the same pressure difference.

GRAVITATIONAL force: holds GASES in the SUN,when you throw a ball in the air it COMES back again.

Muscular force: lifting something, playing basketball

Frictional force: walking, sliding down a slide

Magnetic force: motors, needle of a compass

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It is process in which living beings inhale and EXHALE OXYGEN for their survival is called RESPIRATION.