This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Write the molecular theory of magnet |
|
Answer» dy here's the answer MOLECULAR Theory Of Magnetism. The basic points of the theory are as follows: ... In an un-magnetised substance the molecular MAGNETS are arranged randomly and form CLOSED chains. Hence, the magnetic EFFECT of any one of them is cancelled by its neighbour.HOPE IT HELPS. .. |
|
| 2. |
What is the relation between height 'h' and depth 'd' for the same change in 'g'? |
|
Answer» ight of h from the surface of the earth, the gravitational FORCE on an object of mass m is F = GMm/(R+h)^2 Here (R + h) is the distance between the object and the centre of earth. Say at that height h, the gravitational acceleration is g1. So we can write, mg1 = GMm / (R+h)^2 => g1 = GM/(R+h)^2 _________________ (5) Now we KNOW on the surface of earth, it is g = GM / R^2 TAKING ratio of these 2, g1/g = R^2 /(R+h)^2 = 1/(1 + h/R)^2 = (1 + h/R)^(-2) = (1 – 2h/R) => g1/g = (1 – 2h/R) => g1 = g (1 – 2h/R) ___________________ (6) So as altitude h increases, the value of acceleration due to gravity falls. Let’s say, a body of mass m is resting at point A , where A is at a depth of h from the earth’s surface. Distance of point A from the centre of the earth = R – h, where R is the radius of the earth. Mass of inner sphere = (4/3). Pi. (R-h)^3. p Here p is the density. Now at point A, the gravitational force on the object of mass m is F = G M m/ (R-h)^2 = G. [(4/3). Pi. (R-h)^3. p] m/(R-h)^2 = G. (4/3). Pi. (R-h). p. m Again at point A, the acceleration due to gravity (say g2) = F/m = G. (4/3). Pi. (R-h). p _________________ (7) Now we know at earth’s surface, acceleration due to gravity = g = (4/3) Pi R p G Taking the ratio, again, g2/g = [G. (4/3). Pi. (R-h). p ]/ [(4/3) Pi R p G] = (R-h) / R = 1 – h/R. => g2 = g (1 – h/R) _________________________ (8) So as depth h increases, the value of acceleration due to gravity falls.HOPE IT HELPS YOU |
|
| 3. |
Write the energy conservation that takes place in the hydro power plant |
|
Answer» ✨⏩power plant that PRODUCES electricity by using flowing of water to ROTATE a turbine is called HYDRO power plant. rain falling on high GROUND in hilly areas flows down as reverse. In order to produce electricity, I rise dam is built up behind the dam. As more and more water collects in the Reservoir, the level of water behind the dam is Rises to a large height. In this WAY, the kinetic energy of flowing water river water is converted into potential energy of water stored behind them. Thus, water stored behind them has a lot of potential energy.⏪☺HOPE IT HELPS☺✌THANKS✌ |
|
| 4. |
A train starting from rest attains a velocity of 72 km/h in 5minutes . Assuming that the acceleration in uniform find (a) the acceleration (b) the distance travelled by the train for attaining the velocity? |
|
Answer» Velocity of TRAIN = 72 km/hr = 72 × 5 / 18 m/s = 4 × 5 m/s = 20 m/sAcceleration = velocity / timeTime = 5 min = 5 × 60 s = 300 sAcceleration = 20 m/s / 300 s = 1/15 m/s² = 0.0666 m/s²ANSWER:The ACCELERATION is 0.067 m/s²Distance TRAVELED Velocity = 20 m/sSo in 1 s , the train travels 20 mIn 5 min , the train will travel 20 m × 5 × 60= 100 × 60 m= 6000 mANSWER:The distance traveled is 6000 m. |
|
| 5. |
Describe the formation of rainbow? |
|
Answer» ow is a meteorological PHENOMENON that is caused by the REFLECTION ,REFRACTION and DISPERSION of light. |
|
| 6. |
A star simetime appear brighter some other time fainter what is this effect called ? State Reasons Also PlllzZzzzz As Fast As possible |
|
Answer» formation of VARIOUS positions of a STAR due to ATMOSPHERIC layers |
|
| 7. |
What will be the velocity of a satellite revolving around the earth at a height h above the surface of the earth if radius of earth is R |
| Answer» | |
| 8. |
A particle having charge as that of an electron moves in a circular path of radius 0.5cm |
| Answer» | |
| 9. |
Sorces of energy sslc complete notes please |
|
Answer» ❤❤❤here is ur answer...Introduction to Source of EnergySource of energy is anything which supplies us useful energy for carrying out the various activities like(i) Heat energy to cook food(ii) ELECTRICAL energy to lighten the room.(iii) Muscular energy to carry bag and to run bicycle(iv) Sound energy to CALL friends.Renewable and Non-Renewable Source of EnergyRenewable source of energy is the energy source which can be replenished in short period. Example Solar energy, hydropowerAn energy source which cannot be recreated in short period is categorized as non-renewable source of energy. Example Fossil Fuel-oil, natural gas, CoalGood Sources of EnergyA good source of energy has following characteristics:(i) It could do a large amount of work per unit volume or mass.(ii) It would be easily accessible.(iii) it would be easy to store and transport.(iv) It would be economical.Fossils Fuels-Fossils fuel are the remains of the pre-historic animal and plants buried under the earth millions of years ago.bv-They are non-renewable sources of energy- Since fossils fuels from plants and animals and they get energy from Sun, so their ultimate source of energy is SunExampleCoal, Petroleum productsTurbineA turbine is device that rotates when steam, water or wind false on its blades. The turbine turns the shaft of the electric generator and then electricity is produced Solar EnergySolar energy is the energy of Sun. The earth receives a huge amount of energy from the sun. Traditionally We have been solar energy for drying clothes and grains, make salt from sea waterSolar cookerSolar cooker is a device which is used to cook food by using solar energy. Solar cookers and solar water heaters are based on the facts that A BLACK surface absorbs more heat as compared to a WHITE or a reflecting surface under identical conditionsSolar cooker is having box type structure and its internal surfaces are coloured with black colour. Solar cookers are covered with a glass plate. Which traps heats to go out from box and shows greenhouse effect. A plane mirror is also used to focus the rays of the light. The food which need to be cooked ins kept inside the box and temperature around 140o C in summer in 2-3 hour and cooked the foodOcean Thermal energyThe water at the surface of the sea or ocean is heated by the Sun while the water in deeper sections is relatively cold. Ocean-thermal-energy conversion plants Exploits this difference in temperature. The warm surface-water is used to boil a volatile liquid like ammonia. The vapors of the liquid are then used to run the turbine of generator. The cold water from the depth of the ocean is pumped up and condense vapour again to liquidGeothermal EnergyGeo means earth and thermal means heat. So, Geothermal energy is the energy which is obtained from heat inside the earth.Sometimes molten rocks formed in the deeper hot regions of earth’s crust are pushed upward and trapped in certain regions called ‘hot spots’ and when underground comes in it contact, steam is generated and that steam can be used to power turbineNuclear energyNuclear energy is generated through the process of Nuclear Fission. In Nuclear fission, A heavy nucleus is bombarded with a low energy neutron. In this process, it splits into two lighter nuclei with a tremendous release of energy which can be utilized to boil water to run turbines.Nuclear energy is generated in a controlled manner in the Nuclear reactorThe major hazard of nuclear power generation is the storage and disposal of nucleus wastes because they are radioactiveNuclear FusionNuclear Fusion means joining lighter nuclei to make a heavier nucleus, most commonly hydrogen or hydrogen isotopes to create helium2H + 2H → 3He (+ n)It releases a tremendous amount of energy,The source of energy in the Sun and other stars is also because of Nuclear fusion reaction.hydrogen bombThe hydrogen bomb is based on thermonuclear fusion reaction. A nuclear bomb based on the fission of uranium or plutonium is placed at the core of the hydrogen bomb. This nuclear bomb is embedded in a substance which contains deuterium and lithium. When the nuclear bomb (based on fission) is detonated, the temperature of this substance is raised to 107 K in a few microseconds. The high temperature generates sufficient energy for the light nuclei to fuse and a devastating amount of energy is released.hope it helps...plzz mark me as brainliest my dear !!!❤❤❤ |
|
| 10. |
The radius of the orbit of geostationary satellite is........... |
|
Answer» is the RADIUS |
|
| 11. |
What are the precaution that can be undertaken to avoid the overloading in domestic circuit |
|
Answer» ld FIT MCBs in our house and we can also CONNECT a RCCB with the main LINE from the meter BOX. |
|
| 12. |
Why does violet colour deviate most and red deviate the less |
|
Answer» colour deviate most and red deviate the less because the wavelength of a red light is ALMOST double the wavelength of VIOLET light.Because of the different INDICES of refraction for the different wavelengths of visible light, the angle of DEVIATION varies with wavelength. But since the violet light has a shorter wavelength, it would REFRACT more than the longer wavelength red light.Hope it helps❤️❤️❤️ |
|
| 13. |
What is the name of alloy of cr,mn,fe,ni |
|
Answer» is the ANSWER MARK me as a BRAINLILIST |
|
| 14. |
What is refraction of light |
|
Answer» ion is the BENDING of a wave when it ENTERS a MEDIUM where its speed is different. |
|
| 15. |
Which radiation energy has the shortest wave |
|
Answer» as the SHORTEST WAVELENGTH because it has a HIGHER FREQUENCY . |
|
| 16. |
What is the full form of UPU |
| Answer» PROCESSING UNIT PLZ MARK BRANLIEST | |
| 17. |
Example the difference a plane mirror and a convex mirror with risto type of the size and tha images produced ? |
| Answer» UR ANSWER.....hope it HELPS....pls do mark it as BRAINLIEST | |
| 18. |
A rectangular feild length is 80m and breath is 40m. Is the motion of farmer uniform or non uniform ? find the average speed over one complete round of feild. |
|
Answer» form...average SPEED = 30m/min...hope it HELPS..if it helps thn PLS MARK it as brainliest |
|
| 19. |
If a child stands up while swinging on a swing, then what will be the change in time period of the swing? Will it increase or decrease? |
|
Answer» riod of oscillation of simple PENDULUM - T=2\l = length of pendulum g = acceleration due to GRAVITY. The center of gravity shifted UPWARDS so the length from point of SUSPENSION will decrease. |
|
| 20. |
Why is it that the ciliary muscles are not able to contract beyond the limit |
| Answer» MUSCLES are not able to contract beyond the LIMIT because there is some stratagy of contracting of CILIARY MUSCLE. | |
| 21. |
The earthquake in latur is believed to have resulted from |
|
Answer» 3 Latur earthquake struck India at 3:56 am local time (UTC+05:30) on 30 September. The main area AFFECTED was Maharashtra STATE in Western India. The earthquake primarily affected the DISTRICTS of Latur and Osmanabad, including the Ausa block of Latur and Omerga of Osmanabad.Fifty-two villages were demolished in the intraplate earthquake. It measured 6.2 on the MOMENT magnitude scale, and approximately 10,000 people died, whilst another 30,000 were injured. The earthquake's hypocenterwas around 10 km deep – relatively SHALLOW – allowing shock waves to cause more damage. |
|
| 22. |
Calculate the amount of work done in moving the body up a rough inclined plane |
| Answer» MADE a mistake in calculating the displacement COMPONENT for the OBJECT. If you observe, S≠hsinAS=h/sinAand therefore, the work done, is:F.s=(mgsinA)(h/sinA)=mghwhich is the exact expression you got from energy CONSERVATION. | |
| 23. |
A bullet of mss 10 g travelling horizontally with a velocity of 150m/s stirkes a stationary wooden block and comes to rest in 0.03 seconds. Calculate the distance of penetration of the bullet into the block. Calculate the magnitude of force exerted by the wooden block on the bullet |
|
Answer» the bullet (m) = 10 g = (10/1000) kg =0.01 kg Initial velocity (u) = 150 m/s Final velocity (v) = 0 m/s Time taken (t) = 0.03 SEC i. CALCULATION of the distance of PENETRATION of the bullet into the block: Calculation of the distance of penetration of the bullet into the block = Displacement Displacement = average velocity × time Displacement = [(u + v) / 2] × time Displacement = [(150 + 0) / 2] × 0.03 Displacement = 2.25 m ii. Calculation of the magnitude of the force exerted by the wooden block on the bullet: the magnitude of the force exerted by the wooden block on the bullet = Retarding force Retarding force = mass × RETARDATION Retarding force = mass ×[ (Initial velocity - Final velocity) / t ] Retarding force = 0.01 ×[ (150 - 0) / 0.03 ] N Retarding force = [150/3] N Retarding force = 50 N |
|
| 24. |
a man walks 4,m east and then 3,m due north then climbs a pole of 12m height the distance he covered |
|
Answer» e is the LENGTH of the total PATH COVERED by a BODY. Hence the distance covered by this man is:4m east = 4m3m NORTH= 3mpole = 12m total distance= 4+3+12 = 19 m! |
|
| 25. |
The radius of the orbit of a geosynchronous satellite is a 36000km, then the period of Revolution of a satellite with its orbital radius 9000km would be. A) 24 hrs B)12 hrs C) 6 hrs D) 3 hrs (with its full solution)? |
|
Answer» e geosychronous satellite always has 24 hours TIME because it observes a SPECIFIC place only and as EARTH takes 24 hours for 1 ROTATION AROUND itself geosychronous satellite too takes 24 hours for one revolution.. HOPE IT HELPS YOU |
|
| 26. |
Formula for calculating power spectrum density in amplitude shift keying |
|
Answer» de-shift keying (ASK) is a form of amplitude modulation that represents digitaldata as variations in the amplitude of a carrier wave. In an ASK system, the binary symbol 1 is represented by transmitting a fixed-amplitude carrier wave and fixed frequency for a bit duration of T seconds. If the signal value is 1 then the carrier signal will be transmitted; otherwise, a signal value of 0 will be transmitted.Any digital modulation scheme uses a finitenumber of distinct signals to represent digital data. ASK uses a finite number of amplitudes, each assigned a unique pattern of binary digits. Usually, each amplitude encodes an equal number of bits. Each pattern of bits forms the symbol that is represented by the particular amplitude. The demodulator, which is designed specifically for the symbol-set used by the modulator, determines the amplitude of the received signal and maps it back to the symbol it represents, thus recovering the original data. Frequency and phase of the carrier are kept constant.Like AM, an ASK is also linear and sensitive to atmospheric noise, distortions, propagation conditions on different ROUTES in PSTN, etc. Both ASK modulation and demodulation processes are relatively inexpensive. The ASK technique is also commonly used to transmit digital data over optical fiber. For LED transmitters, binary 1 is represented by a short pulse of light and binary 0 by the absence of light. Laser transmitters normally have a fixed "bias" current that causes the device to emit a low light level. This low level represents binary 0, while a higher-amplitude lightwave represents binary 1.The simplest and most common form of ASK operates as a switch, using the presence of a carrier wave to indicate a binary one and its absence to indicate a binary zero. This type of modulation is CALLED on-off keying (OOK), and is used at radio frequencies to transmit Morse code (referred to as continuous wave operation),More sophisticated encoding schemes have been developed which represent data in groups using additional amplitude levels. For instance, a four-level encoding scheme can represent two bits with each shift in amplitude; an eight-level scheme can represent three bits; and so on. These forms of amplitude-shift keying require a high signal-to-noise ratio for their recovery, as by their nature much of the signal is transmitted at reduced power.ASK diagramASK system can be divided into three BLOCKS. The first one represents the transmitter, the second one is a linear model of the effects of the channel, the third one shows the structure of the RECEIVER. The following notation is used:ht(f) is the carrier signal for the transmissionhc(f) is the impulse response of the channeln(t) is the noise introduced by the channelhr(f) is the filter at the receiverL is the number of levels that are used for transmissionTs is the time between the generation of two symbolsDifferent symbols are represented with different voltages. If the maximum allowed value for the voltage is A, then all the possible values are in the range [−A, A] and they are given by:{\displaystyle v_{i}={\frac {2A}{L-1}}i-A;\quad i=0,1,\dots ,L-1}the difference between one voltage and the other is:{\displaystyle \Delta ={\frac {2A}{L-1}}}Considering the picture, the symbols v[n] are generated randomly by the source S, then the impulse generator creates impulses with an area of v[n]. These impulses are sent to the filter ht to be sent through the channel. In other words, for each symbol a different carrier wave is sent with the relative amplitude.Out of the transmitter, the signal s(t) can be expressed in the form:{\displaystyle s(t)=\SUM _{n=-\infty }^{\infty }v[n]\cdot h_{t}(t-nT_{s})}In the receiver, after the filtering through hr (t) the signal is:{\displaystyle z(t)=n_{r}(t)+\sum _{n=-\infty }^{\infty }v[n]\cdot g(t-nT_{s})}where we use the notation:{\displaystyle {\begin{aligned}n_{r}(t)&=n(t)*h_{r}(t)\\g(t)&=h_{t}(t)*h_{c}(t)*h_{r}(t)\end{aligned}}}where * indicates the convolution between two signals. After the A/D conversion the signal z[k] can be expressed in the form:{\displaystyle z[k]=n_{r}[k]+v[k]g[0]+\sum _{n\neq k}v[n]g[k-n]}In this relationship, the second term represents the symbol to be extracted. The others are unwanted: the first one is the effect of noise, the third one is due to the intersymbol interference.If the filters are chosen so that g(t) will satisfy the Nyquist ISI criterion, then there will be no intersymbol interference and the value of the sum will be zero, so:{\displaystyle z[k]=n_{r}[k]+v[k]g[0]}the transmission will be affected only by noise. |
|
| 27. |
State and explain Bohr's theory of hydrogen atom ? |
|
Answer» Hydrogen Atom. NielsBohr introduced the ATOMIC Hydrogen model in 1913. He DESCRIBED it as a positively CHARGED NUCLEUS, comprised of protons and neutrons, SURROUNDED by a negatively charged electron cloud. In themodel, electrons orbit the nucleus in atomic shells.pls follow me |
|
| 28. |
What type of magnet are these? |
|
Answer» e-shoe MAGNET2. Cylinder MAGNET3. Dum-bell MAGNET4. BAR MAGNET |
|
| 30. |
Why is black paint used in solar cookers? |
| Answer» E..!!Here's Your Answer..!!BLACK Paint is used in SOLAR Cookers because it ABSORBS HEAT and light at a good extent.Hope This Helps..!!#BeBrainly❤️ | |
| 31. |
Define grevitional force???? |
|
Answer» eY mAte_______=>The force of attraction between all masses in the universe; ESPECIALLY the attraction of the earth's mass for bodies NEAR its surface. Synonyms: gravitation, GRAVITATIONAL attraction, GRAVITY Types: solar gravity. the gravity of the sun.==================HOPE IT HELP U !! |
|
| 32. |
If m is -ve and more than 1 it is a ____ mirroranswer plz. |
| Answer» SWER:If MAGNIFICATION is NEGATIVE and more than 1, it is a Concave mirror.Hope this helps uh..Mark Brainliest ♡ | |
| 33. |
Show the graph between pressure and volume at constant temperature |
| Answer» SWER: The graph between PRESSURE and volume at constant temperature is shown in the above attachment.Hope this helps UH..MARK Brainliest ♡ | |
| 34. |
What is refractive index |
|
Answer» ive index, ALSO called index of REFRACTION, measure of the bending of a RAY of LIGHT when passing from one medium into another. ... Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v. |
|
| 35. |
Pulling force of earth called? |
|
Answer» your answer... ☺️☺️☺️➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡It's like the Earth pulling on you and keeping you on the GROUND. That pull is gravity at work. Every object in the UNIVERSE that has mass exerts a GRAVITATIONAL pull, or force, on every other mass. The SIZE of the pulldepends on the masses of the objects.✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔I hope this answer is helpful to u...❤❤❤Keep Asking... ✌️✌️✌️✨✨✨If help u. Mark my answer as brainliest✨✨✨ |
|
| 36. |
Power factor of L R circuit is |
|
Answer» iation of impedance (ZZ) in any RLRLcircuit is shown below. The INDUCTIVE REACTANCE (XLXL) may VARY either through a CHANGE in L or change in FREQUENCY as XL=2πfL=ωLXL=2πfL=ωL |
|
| 38. |
What is terminal velocity |
|
Answer» ood morning your answer is here........ the constant SPEED that a freely falling object eventually REACHES when the resistance of the MEDIUM through which it is falling prevents further ACCELERATION |
|
| 39. |
What is angle of friction |
|
Answer» the angle of a plane to the horizontal when a BODY PLACED on the plane will just START to slide. The tangent of the angle of FRICTION is the coefficient of static friction. |
|
| 40. |
Can you get up without bending when sitting on chair? If not why? |
|
Answer» n sitting on a chair cannot get up without BENDING FORWARD because? The answer is that you can't STAND up unlessyou have your weight on the GROUND. Whenyou're sitting, your weight center is too far BACK (in the chair) and you can't get your feet onto the ground. |
|
| 41. |
Explain the Aufbau principle with a suitable example |
|
Answer» bau principle states that in the ground state of an ATOM or ION, electrons fill atomic orbitals of the lowest available ENERGY levelsbefore occupying higher levels. For example, the 1s shell is filled before the 2s subshell is occupied. In this way, the electrons of an atom or ion FORM the most STABLE electron configuration possible. An example is the configuration 1s2 2s2 2p6 3s2 3p3 for the phosphorus atom, meaning that the 1s subshell has 2 electrons etc. |
|
| 42. |
Explain the hunt rules with one suitable example |
|
Answer» od neighbor. Ask PERMISSION WHENEVER you hunt on private property! See RCW 77.15.435 for laws on trespassing while hunting.Be a safe hunter. Know all basic safety rules, and follow them 100% of the time!Obey all rules and regulations. Follow the law and the landowner’s wishes!Be responsible. Practice shooting before hunting season, but not on live game!Being a good hunter is the same as being a good student, a good WORKER, or a good citizen. Everybody knows the “Golden Rule,” but not everybody applies it as often as they should! Non-hunters will JUDGE all hunters by your actions. What kind of hunter do you want to be? Will you be a good citizen when you’re afie |
|
| 43. |
A mass of 10kg is dropped from a height of 50cm.find its kinetic energy and velocity |
|
Answer» e INITIAL velocity is 0 because the MASS is in DROPPING state.. Now, v^2-u^2=2ghv^2=2*10*50*100v=√2*5*5*2*10*100v=100√10 =100*3.16 =316m/sAnd now the kinetic energy =1/2mv^2=1/2*10*316=1580J |
|
| 44. |
If a mass of 4 kg is dropped from a height of 100 m, what will be its velocity when it reaches the ground |
|
Answer» body is throw or DROPPED from some height then we take initial VELOCITY i. e u=0 because when the body is DROPPING the body is at rest. Now, we APPLY the formula v^2-u^2=2as But a is replaced by g and s is replaced by h.. v^2-u^2=2ghv^2=0+2*10*100v^2=2000v=√2000v=44.6m/s.. |
|
| 45. |
What is meant by dispersion of light ? Explain the formation of rainbow in the sky with the help of a diagram what colour appears on top and on bottom of a rainbow |
|
Answer» itting of WHITE LIGHT into SEVEN COLOR is called DISPERSION of light |
|
| 46. |
a body of mass 10 kg is dropped from a height of 1m on a hard smooth surface it bounce back to same height the magnitude of the change in momentum (kgm/s) |
|
Answer» y of the objecttherefore,CHANGE in MOMENTUM ismv-(-MV)=2mv=2*10*4.471 |
|
| 47. |
The amount of light entering the eye is regulated by..?? Pupil or Iris |
| Answer» E your answer.......... ....DOWN...so Your answer is IRIS ✌tqsm..... HOPE you like it MARK me as brainliest if I did #DISHA ❤ | |
| 48. |
Metal who can bit all the strongest metal bullet |
| Answer» E your ANSWER is ------.....ALUMINIUM. ❤tqsm mark me as BRAINLIEST if I did #disha | |
| 49. |
Five slogans aginst inequality or discrimination |
|
Answer» e your answer is ----- Your 5 slogans are ------neither king cannot superior neither iron or copper there great one is only daughter..girls have brain BOYS have powers we need to work together to meet the need of HOUR..a little AMOUNT of care a handful of WARMTH and heart FULL of love for a girl child can make a big difference...so no to abortion of girl child..men and women are the same stop playing discrimination gametqsm mark me as brainliest if I did #disha❤ |
|
| 50. |
Compare the following 1:- wavelength of the incident solar radiation absorbed by the Earth's surface and the radiation re-radiated by the earth. 2:- Tanning effect produced on the skin by uv radiation incident directly on the skin and that coming through glass window. |
|
Answer» length of absorbed rays is shorter than the ones which are radiated backb. Radiations COMING through a glass WINDOW is less as compared to the ones directly received because glass absorbs a BIT of radiation |
|