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Where is the figure?

A rainbow is caused by combined effects of reflection, refraction, and dispersion of light. This is a natural climatic phenomenon, often observed after a shower of rain.

Sunlight while pass-through droplets of water produce a spectrum of light that appears in the sky. It takes the form of a circular arc with multiple colour.arc.

Rainbows produced by sunlight always found to arise opposite the sun in the sky. Although rainbow is formed in full circle in the sky, we normally see only an arc formed by illuminated droplets.

The total internal reflection reflects all the 100 percent light. There is no loss of light due to reflection because the reflection occurs within the medium.

It reflects all the 100 %light.

answer c b ok by tick

4 min is the right answer

4min is the correct answer

4 minutes is the answer that is options is correct

speed=distance/time320m/s=9.6km/timetime=9.6km/320m/stime=9600m/320m/s =30 sec

Thus 2 radians equals360 degrees. This means that 1 radian = 180/ degrees, and1 degree= /180 radians.

d(A,B) = R a /180, These formulas can be checked by noticing that the arc length is proportional to the angle, and then checking the formula for the full circle,

this question was submitted by miss

De Broglie hypothesis says that all matter has both particle and wave nature. The wave nature of a particle is quantified by de Broglie wavelength defined asλ=h/p wherepis the momentum of the particle. This was called a hypothesis because there was no evidence for it when it was proposed, only analogies with existing theories. (The wavelength-momentum relation holds exactly for photons.)

Historically, de Broglie hypothesis was the next step in quantum theory after Planck, Einstein and Bohr.

In 1900, Max Planck introduced the notion that radiation is quantized to derive the black body radiation spectrum.

In 1905, Albert Einstein used Planck's idea to explain photoelectric effect, which led to wide acceptance of the quantum nature of radiation.

In 1913, Niels Bohr used quantization of radiation along with the Bohr hypothesis (that the angular momentum of electrons is quantized) to correctly predict the line spectrum of hydrogen atom and explain .

In 1923, Lois de Broglie took this idea further and proposed that matter has wave nature as radiation has particle nature.

Bohr hypothesis comes as an immediate consequence of de Broglie hypothesis - angular momentum must be conserved if an electron in an atom is seen as a wave going in circles around a nucleus such that the electron wave interferes constructively everywhere in the orbit.

In 1926 Erwin Schrödinger published the Schrödinger equation which generalized de Broglie's concept of matter waves and put them in a more robust theoretical footing.

The direct experimental confirmation came in 1927 when Clinton Davisson and Listor Germer and independently, GP Thomson observed electron diffraction.

hence, change in momentum = F.t = 2*5 = 10kgm/sec

plz verify it by using 2 law of newton

This is the formula used which is derived from Newton's second law

what is dp/dt in this formula

dp is change in momentum and dt is the change in time.

Atime period(denoted by 'T' ) is thetimeneeded for one complete cycle of vibration to pass in a given point. As the frequency of a wave increases, thetime periodof the wave decreases. The unit fortime periodis 'seconds'

Gauss's law for magnetism is one of the four Maxwell's equations that underlie classical electrodynamics. It states that the magnetic field B has divergence equal to zero, in other words, that it is a solenoidal vector field. It is equivalent to the statement that magnetic monopoles do not exist.

The ratio between density of a substance and density of water is called relative density.

The ratio between density of a substance and density of water is called relative density.

Relative density =

Density of the substance/density of water at 40C

Units: Relative density has no units because it is the ratio between the similar physical quantities (density).

Relative density = Density relative to water Density of silver = relative density * density of water = 10.8 * 1 gm/cm³ = 10.8 gm/cm³ in SI units, 10.8 * 1000 kg/m³ = 10, 800 kg / m³

Acceleration = Change in Velocity/Time Change in Velocity = 36-18 = 18 km/h=5 m/s Time= 5 Seconds Acceleration = 5/5= 1 m/s^2

Equation of motion,s=ut+(1/2)at^2 u=18 km/h=5 m/s t=5 s a=1 m/s2 s= (5*5)+(1/2*1*5*5) s=25+12.5 i.e., s=37.5 m

Thank u

Let total distance be x

It covered x/3 at 10x/3 at 20x/3 at 60

Times taken respectively are { d / t } x / 30x / 60x / 180 respectively

total time = x/30 + x /60 + x/180= 10x / 180= x / 18

Average speed of bus (avg s )= total distance / total time

avg s = x / {x/18}avg s = 18 km / h

(C) is correct option

18 is right .

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(A) 25km/his a correct answer

25km/his a correct answer

(A)25km/his a correct answer

A. 25km/h is a correct answer .

C) is the correct answer is

( d). 50 is the correct answer

Hii frnd..

the speed average is

Total average speed is simply = Total distance/Total timeLets say,D = distance travelled by the car in EACH directiont1 = time spent on onward tript2 = time spent on return tripThus, the total distance travelled by the car = D+D= 2DAnd, by the formula, Speed = Distance/TimeS1 = D/t1 => t1 = D/S1S2 = D/t2 => t2 = D/S2Total average speed = Total Distance/Total time = 2D/(t1+t2) = 2D/(D/S1+D/S2) = 2S1*S2/(S1+S2)

Remember this general formula for a total average speed problems:Total average speed = 2S1*S2/(S1+S2)

So in the question S1 = 20km/hr

&S2 = 30km/hr

So av. speed = 2 x 20 x 30/20+30

= 24km/hr

24km / hr is the right answer

please accept best

25 is the right answer

option b is right answer

Option B is correct.

fringe width is wavelength x distance of screen/slit differencehence=500*10^-9*1.5/0.15*10^-3=5mm

Let distance be xx/3 at 20 kmphremaining 2x/31/2 of remaining is 1/2 of 2x/3 = x/3 at 30 kmphand remaining ( x - x/3 - x/3 = x/3) at 50 kmphfirst part takes (x/3)/20 hours2nd part takes (x/3)/30 hours3rd part takes (x/3)/50 hoursTotally time taken for a distance of x km = (x/3) ( 1/20 + 1/30 + 1/50) hoursTotally time taken for a distance of x km = (x/30)( 15 + 10 + 6)/30 = (x/30)(31/30) = 31x/900

Average speed = total distance/total time = x/ ( 31x/900) = 900/31 kmph = 29.03 kmph

Thank you

the pic is not clear

Given R1 = 1 ohm, R2 = 10 ohm

Equivalent resistance when R1 and R2 connected in parallel= 1/R1 + 1/R2= 1/1 + 1/10= (10 + 1)/10= 11/10= 1.1 ohm

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11 ohm is the answer

11 is the best answer me

c is the snswer. SEEJAN MAITY. Am i m write or wrong.

time period 2πr/vso calculate v firstthen calculate V^2/rit gives acceleration

C2 = 2 C1.

parallel combination: C_eq = 3 C1 Energy E = 1/2 * C_eq * V1² = 3/2 * C1 V1²

Series combination: C_eq = C1 C2 /(C1 +C2) = 2 C1/ 3 Energy E =1/2 * 2/3 * C1 * V2² = 1/3 * C1 V2²

Equating energies, we get V1 : V2 =√2 : 3

Plot of energy vs Capacitance: This will be linear if Voltage applied is assumed to be constant.

Answer : A) EquisetumExplanation :The termshorse tail,horsetailorhorse's tailmay refer to the following: Thetailof ahorse. Equisetales, the order ofpteridophytesthat includes extinct species known in the fossil record. Equisetum, a genus in the Equisetales that includes: Equisetum arvense, or "field horsetail"Like if you find it useful