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★correct Question★

a concave lens forms An erect IMAGE of 1/3 SIZE of the object which is placed at a DISTANCE 30 CM in front of a lens,find position of image, focal length of the lens

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Answer:-

★The focal length is 15 cm and the image is formed at 10 cm from the lens.

Given:-

Magnification m =

We know that,

The magnification is

m =

v = -10 cmv=−10cm

The image is formed at 10 cm from the lens.

Using lens's formula

f = -15 cmf=−15cm

Hence, The focal length is 15 cm and the image is formed at 10 cm from the lens.

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and

Rational number between and =

{There are more NUMBERS between these TWO rational numbers, u can write the ONES u WANT}

ANSWER:

hope this will HELP you

Explanation:

so we know that the speed of LIGHT is 3*10^8m/s.

now no. of seconds in a year =60*60*24*365=31536000 seconds

so meters TRAVELLED by light in 31536000 seconds will be

3.15*10^7*3*10^8=9.45*10^15m

EXPLANATION:

this is not my LANGUAGE .

Answer:

AVERAGE Voltage Analytical Method

Then the average value is obtained by adding the INSTANTANEOUS values of voltage over ONE HALF CYCLE only. But in the case of an non-symmetrical or complex wave, the average voltage (or current) must be taken over the whole periodic cycle mathematically.

Explanation:

The Sun is the source of energy for most of LIFE on Earth. It DERIVES its energy mainly from nuclear fusion in its core, CONVERTING mass to energy as protons are COMBINED to form helium. This energy is transported to the sun's surface then released into SPACE mainly in the form of radiant (light) energy.

ANSWER:

i)√5

ii)√5

iii)√18

Explanation:

A=a i+b j

B=xi+y j

A+B=(a+x)i +(b+y)j

MAGNITUDE of A= √(a²+b²)

magnitude of B=√(x²+y²)

magnitude of A+B=√( (a+x)²+(b+x)²)

direction of UNIT VECTOR of A is= vector A/magnitude of A

i hope YOu understand.............

ANSWER:

In the straight forward cases where a CONSTANT force MOVES an object at constant velocity, the POWER is just P = Fv. In a more general case where the velocity is not in the same direction as the force, then the scalar product offorce and velocity MUST be used

Explanation:

i hope it's helpful for you

Answer:

However, each CAPACITOR in the PARALLEL network may store a different charge. To FIND the equivalent CAPACITANCE Cp of the parallel network, we note that the total charge Q stored by the network is the sum of all the individual charges: Q=Q1+Q2+Q3.

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Answer:

Before a thunderstorm, the HAIRS on your HEAD sometimes stand on end.

A hair with mass 0.50 mg and charge 1.0 pC is supported by a force due to an electric field.

Ignore any FORCES other than the weight of the hair and the electric force.

What is the electric field strength?

A 4.9 × 103 N C-1

B 4.9 × 105 N C-1

C 4.9 × 106 N C-1

D 4.9 × 109 N C-1

ANSWER:

R = _/P^2 +Q^2 + 2PQ [email protected]

R= _/3^2 + 4^2 + 2 (4)(3) COS 30°

R= _/9 + 16 + 24 COS 30°

R= _/25 + 24 (_/3 / 2)

R = _/ 25 + 12_/3

R= _/25 + _/ 12 _/(_/3)

R= 9.55

R= 10(approx.)

NOW ,

TAN beeta = Q SIN @ / P + Q [email protected]

= 4 SIN 30 / 3 + 4 COS 30

= 4 (1/2) / 3+ 4 (_/3 / 2)

= 2./ 3 + 2_/3

= 2 / (3_/3 +2)/_/3

= 2 / ( 9 +2 _/3)

therefore ,beeta = TAN^-1 [ 2/ (9+ 2_/3) ]

you can solve it further if you want

just rationalize 9 + 2_/3

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Option A. LESS than 5 psigb.

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ANSWER:

BALA bala SHAITAN KA SALA

ANSWER:

HCI+AGJ+GHAN+JJS+HHW

Explanation:

First you must realize that kilogram is the standard unit of mass and mass of a body does not change any where in the universe because mass of a body DEPENDS on the number of particles in a body and this count remains same if the body is taken any where in the universe however your weight will be different at moon because weight is the force of attraction towards the center of all the heavenly BODIES. So if your weight here on the Earth =w=mg=50 KG x9.8N/kg =490N, then on the surface of moon your weight will be w= mg=50kgx1.63N/kg=81.66N, because GRAVITY of moon is less than the gravity of earth.

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Answer:

1500*3=4500,5*30= 150

ANSWER:

HEY BUDDY !

What's the QUESTION????

VOLTMETER:-To measure electric potential difference between TWO points is called voltmeter.

AMMETER:- An ammeter is a Device that is USED to measure electric current in an electric CIRCUIT. ahlukileoi and 8 more users found this answer helpful.

Answer:

there angle SPEND karta HAI KITNA SLOPE hai

Answer:

A red DWARF is the smallest and coolest kind of STAR on the main sequence. Red dwarfs are by far the most common TYPE of star in the MILKY Way, at least in the neighborhood of the Sun, but because of their low luminosity, INDIVIDUAL red dwarfs cannot be easily observed.

Hope it helps....

Please mark me the brainliest

Answer:

Position of NTH bright fringe y

n

=

d

nλD

GIVEN : λ=700 nm

∴ y

3

=

d

3×700D

⟹y

3

=

d

2100D

The 5th bright fringe DUE to LIGHT of wavelength λ

′

is formed at y

3

∴ y

5

=y

3

OR

d

5×λ

′

D

=

d

2100D

⟹ λ

′

=

5

2100

=420 nm

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EXPLANATION:

what what is the BOOK of CBSE or ICSE board because in ANSWER

ANSWER:

Asteroids are leftovers from the formation of our solar system about 4.6 billion years ago. Early on, the birth of Jupiter PREVENTED any planetary bodies from forming in the gap between Mars and Jupiter, causing the small objects that were there to collide with each other and FRAGMENT into the asteroids SEEN today.

ANSWER:

patabolaaa BETA

Answer

•rotation of a cabin a giant WHEEL.

•rotation of clock hands.

•rotation of wheel of CAR moving uniformly.

•rotation of ELECTRONS to it's NUCLEUS.

ANSWER:

his answer is CORRECT it's PARABOLIC he also gave the proof of the equation of parabola it's PERFECT answer

Explanation:

stay safe and happy

It must satisfy the constraints of CENTRIPETAL FORCE to remain in a circle, and must satisfy the demands of CONSERVATION of energy as GRAVITATIONAL potential energy is converted to kinetic energy when the mass MOVES downward.

Answer:

200+3+y+5=0

208+y=0

y=-208

so,the VALUE of y is -208

EXPLANATION:

length2 × MASS × time-3 × electric-current-2

ANSWER:

INCREASE

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ANSWER:

HOPE it's HELPFUL...

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Tq

between COMB and hair

Explanation:

PLEASE FOLLOW me on branily

Answer:

no. of SIGNIFICANT figures in 4.033 is 4 and no. of significant figures in GIVEN no. 0.004033 is 6

Answer:

How many moles of calcium atoms does it CONTAIN? The answer is one half of a mole, because 1 mole is equal to 6.02 x 1023, so a half of a mole WOULD be equal to 3.01 x 1023 atoms. Okay, so if it contains 0.5 moles of calcium atoms, how MUCH MASS would that have? The answer is about 20 grams.

Explanation:

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ANSWER:

WR is the QUESTION !!!!!!!

ANSWER:

can't UNDERSTAND your QUESTION?

Answer:

if he travels and reaches the same point.

Explanation:

for EXAMPLE he TRAVELLED in circular path of circumference of 30 km

Answer:

Explanation:

Angular velocity applies to those objects that MOVES along a circular path. Angular velocity is MEASURED in radian/second or angle/seconds. Similarly the rate of change of angular velocity is angular acceleration.

Now we know that if an object is moving in a circular path with CONSTANT speed still its velocity will be changing as its direction is changing at every point. It means that it is ACCELERATING and it is inward acceleration. This inward acceleration is called CENTRIPETAL acceleration.

a(c)= V^2/r where V is the magnitude of velocity and r is the radius of the circular path of motion.

ω represents angular velocity and is linked with linear speed with the formula;

V=rω.

centripetal acceleration will now be ---(ωr)^2/r

a(c)=rω

we know the F =ma

centripetal force, therefore is equal to m into a(c) ----- mrω(^2).

Answer:

OPTION : C

MEANS 5s

Explanation:

because it is falling from REST and only gravity is active on it so height is constant

so my answer is 5s

Answer:

0.5 MOLES of METHANE are REQUIRED to produce 22G og on combustion

Explanation:

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ANSWER:

In only WEST SIDE of the magnet

Explanation:

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ANSWER:

Let an object is moving with uniform acceleration.

Let an object is moving with uniform acceleration.

Let the initial velocity of the object = u

Let the object is moving with uniform acceleration, a.

Let object reaches at POINT B after time, t and its final velocity BECOMES, v

Draw a line parallel to x-axis DA from point, D from where object starts moving.

Draw another line BA from point B parallel to y-axis which meets at E at y-axis.Let OE = time, t

Now, from the graph,

BE = AB + AE

⇒ v = DC + OD (Since, AB = DC and AE = OD)

⇒ v = DC + u (Since, OD = u)

⇒ v = DC + u ------------------- (i)

Now, Acceleration (a) =(Change in velocity)/(Time taken)

a= v – ut

⇒ a = v - ut

⇒ a= OC – OD t = DC t

⇒a = OC-OD t =DC t

⇒at=DC

⇒at=DC -----(ii)

By substituting the value of DC from (ii) in (i) we get

v= at + u

v = at + u

⇒ v = u + at

⇒ v = u + at

Above equation is the relation among initial velocity (u), final velocity (v), acceleration (a) and time (t). It is called first equation of motion.

Answer:33.3

Explanation:INITIAL partial pressures of CO and CO  

2

​  

 are 3 atm and 2 atm respectively.

               2CO(g)⇋CO  

2

​  

(g)+C(s)

To reach EQUILIBRIUM, 2x atm of CO reacts to FORM x atm of CO  

2

​  

The equilibrium partial pressures of CO and CO  

2

​  

 are 3−2x atm and 2+x atm respectively.

Total equilibrium PRESSURE is (3−2x)+(2+x)=5−x atm. But it is equal to 4.5 atm.

4.5=5−x

x=5−4.5

x=0.5

p  

CO

​  

:p  

CO  

2

​  

​  

=(3−2x):(2+x)=(3−2(0.5)):(2+1(0.5))=2:2.5=4:5

K  

p

​  

=  

P  

CO

2

​  

P  

CO  

2

​  

​  

​  

K  

p

​  

=  

2  

2

2.5

​  

K  

p

​  

=0.625atm  

−1

The DISSOCIATION of CO =  

3

2x

​  

=  

3

2(0.5)

​  

=0.333

The % dissociation of CO =100×0.333=33.3

ANSWER:

SAMI Pattu Vidyut paripath Mein Vishwas kya hai Jaise biwi HAMARA HO jaega donon Ko Mila Ke Hamara dablue BAN jata hai aise Hamara aaa mila ke hamara and ban jata hai

ANSWER:

f=14n

m=10kg

co EFFICIENT =1

Explanation:

ANSWER:

SORRY I can not answer.

Answer:

fingers are WETTED because,the RUPEE note may stick each other,this may give some problem while counting MONEY ,so fingers are wetted....

hope you UNDERSTOOD ,,THANK you

Answer:

daily life uses of velocity are -

1).revolution of earth AROUND SUN

2).velocity of a SATELLITE around the earth

3).velocity of a car while driving

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ANSWER:

The turning EFFECT of a force is known as the moment. It is the product of the force multiplied by the perpendicular DISTANCE from the line of action of the force to the pivot or point where the object will turn. SI UNIT of moment of a force is Newton-metre (Nm). It is a vector quantity.

Explanation:

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ANSWER:

STARTING POINT of EVERYTHING is ENERGY