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. |
A) Derive the expression for velocities of the bodies after the elastic collision in one dimension. |
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Answer» ANSWER: here is your answer Explanation: In Case of the Elastic Collision, Kinetic ENERGY before and after the collision remains the CONSERVED, momentum also remains conserved. On This basis, Derivation in One dimension is shown in attachment. The body of MASS m₁ is moving with the velocity u₁ and body of mass m₂ is moving with velocity u₂, after the collision there velocity became v₁ and v₂. The Final Result is, v₂ - v₁ = u₁ - u₂. |
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| 2. |
Whose coefficient of restitution is greater...... of a floor or wooden surface |
Answer» FLOOR ....................... |
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| 3. |
Forward and reverse biar |
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Answer» forward means aage and reverse means peeche |
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| 4. |
Direct current and alternating current |
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Answer» Answer: DIRECT current (DC) is the FLOW of electric charge in only one direction. Alternating current (AC) is the flow of electric charge that periodically REVERSES direction. If the SOURCE varies periodically, particularly sinusoidally, the circuit is known as an alternating current circuit. |
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| 5. |
How do you we say that is motion is life |
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Answer» We SAY that there is motion if there is the change of surroundings ACCORDING to time. Hope it helps you ! MARK me the brainliest !!! |
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| 6. |
Is there any relationship of latent heat with the regelation? |
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Answer» Answer :- Yes, when ice melts, heat is absorbed, but the temperature des not CHANGE. ALSO, when water refreezes, heat is GIVEN out, but the temperature does not change. This heat absorbed or given out is the latent heat. HOPE it helps. Thanks my answers.Mark as brainliest. |
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| 7. |
What is the effective resistance between P and Q in the given circuit |
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Answer» Answer: All the resistance less wires that have been ATTACHED in between the three pairs of 20,30 and 40,60 resistances can be removed due to the formation of a balanced Wheatstone Bridge. So, The PROBLEM is now simple ENOUGH to CALCULATE the parallel resistance of resistances 10,50,100 and 50. So, 1/R = 1/10 + 1/50 + 1/100 + 1/50 = 10+2+2+1/100 = 15/100 So, Equivalent resistance across the points P and Q is 100/15 ohms = 20/3 = 6.67 Ohms |
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| 8. |
Draw a labelled diagram showing the human respiratory system |
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Answer» MARK me as Brainliest. Much love. Thank you. |
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| 9. |
Volume of 100 liter gas increases to 120 liter atconstant temperature and 10 bar externalpressure. Calculate the work done by thesystem [1 liter bar = 24.21 calory] |
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Answer» Given info : Volume of 100 liter gas increases to 120 liter at constant temperature and 10 bar external pressure. To find : The workdone by the system is .. solution : work done at constant temperature is given by, W = P∆V here Pressure , P = 10 bar and change in volume , ∆V = V₂ - V₁ = 120 litres - 100 litres = 20 litres. now workdone by the system = 10 bar × 20 litres = 200 litre bar but given, I litres bar = 24.21 cal = 200 × 24.21 cal = 4842 cal Therefore the workdone by the system is 4842 cal. also read similar questions : A gas at a volume of 4 LITERS is at a pressure of 2 atm. The volume is changed to 16 liters, what must the new pressure ... a block of metal whose volume EXPANSIVITY is 5.0*10 and isothermal compressibility is 1.2*10 has volume 5 liter at 1atom... |
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| 10. |
When ciliary musclws are relaxed focal length of eye is |
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| 11. |
At the one bar pressure the volume of gas is 0.6 litre. If the gas receives 122 Joule of heat at1 atmosphere pressure, the volume become2 liter the calculate its internal energy. (1 litrebar = 101.32 Joule) |
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Answer» ∆U=Q+W =120+P∆V =120+(101.32 * 1.4) =120+(141.848) ∆U=261.848 JOULE |
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| 13. |
A solid ball and a cylinder roll down on an incline plane without slipping,which reaches the bottom first? discuss |
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Answer» both will reach at the same TIME as on an inclined PLANE gravity is same for all |
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| 14. |
❣️hi friends ❣️plz plz Jo mere following me last me h use follow kr do ❣️❤️❣️Mai aaplog ko follow krungi Jo use follow krenge❣️❤️❣️question- what is odometer?plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz |
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Answer» Answer: Odometer is the device used for measuring the distance travelled by the vehicles. hope it will be HELPFUL ✌️ |
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| 15. |
Is it forward biased or reverse biased |
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Answer» Answer: It is reverse biased configuration since the negative Side is CONNECTED to higher POTENTIAL TERMINAL which is ground at zero VOLTS and similarly the p-side is connected to the lower potential termimal which is -5 Volts. |
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| 16. |
Egyps to reduce energy consumption.ges and two disadvantages of using a solar cooker.ance of R if total resistance between A and B is 8 12?622wwwwwA-WWW312wwwcam, explain the position, relative size and nature ofconvex lens.on a current carrying conductor in a magnetic field. |
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Answer» Here are the advantages and disadvantages of using a solar COOKER: Advantages:
Disadvantages: Please mark as brainliest if you found this helpful :) |
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| 17. |
check whether the equation 1/2mv^2=mgh is dimensionally correct, where m is the mass of the body,v, its velocity,g is the acceleration due to gravity. |
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Answer» Explanation: 1/2mv^2=mgh m=M, v=LT^-1 g=LT^-2,h=L Then.... ML^2T^-2=ML^2T^-2 Hence PROVED |
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| 18. |
In the given circuitRc= 3 kohm, VCE = 6 V and VBE= 0.7 V.If B = 50, the base resistor Rb will be (1) 7.5 x 104 32(3) 4.5 * 1052(2) 5 x 1042(4) 1.125 105 22 |
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Answer» Answer: Resistance of base resistor is GIVEN asExplanation: As we know that voltage GAIN in COMMON EMITTER transistor is given as also we know that CURRENT gain in this transistor is given as #Learn Topic : Transistor |
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| 19. |
a 5 centimetre tall object is placed perpendicular to the principal axis of a converging lens of focal length 10cm. The distance of the object from the lens is 25 cm, find the position size and nature of the image formed. |
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Answer» the position of the image is b/w focus and center of curvature . the nature of the image is inverted, DIMINISHED and real ....... HOPE u LIKE it |
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| 20. |
a convex lens made of a material of refractive index m1 when placed in a medium of refractive index m2 behaves as a diverging lens. how are m1 and m2 related? |
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Answer» Answer: The refractive index of the material of the convex lens is greater than the refractive index of the medium HENCE the light bends AWAY from the normal and diverges out. So, the relation between M1 and M2 is M1>M2 hope it helps you plzz mark as brainliest if you LIKE it |
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| 21. |
Calculate the work done in kilo joules in lifting a mass of 10kg at steady velocity through vertical height of 10m. |
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Answer» Answer: formula: WORK done = mgh Explanation: m=10 kg g=10 m/s^2 h=10 m Ans=> work done= 10*10*10 =1000 J =1 kj |
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| 22. |
25. Duplex was an ambitious man to establish French rule in India. Substantiate |
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Answer» Explanation: JOSEPH Marquis DUPLEIX (23 JANUARY 1697 – 10 NOVEMBER 1763) was Governor-General of French India and rival of ROBERT Clive. |
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| 23. |
Boy walks from his home to a post office as a distance of 1.5 km in 20 minutes he then returns to his home in time 25 minutes find the average speed of the boy |
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Answer» 51888 hair and make the PAYMENT to be happy birthday happy birthday to me so I am not the same the happy Explanation: hi please see attached the following URL Adobe FLASH I i and happy birthday from the day and I have a happy new YEAR the following the below mentioned details to follow up to date with all of the following link below to delete and I will COME over and over and let the day of work to get the latest the day and I will come back from a happy birthday from it all in my pride and pleasure ru and I in my u and I in eu and the other |
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| 24. |
With the help of diagram show the position,size and the nature of the image formed by a convex lens for various positions of the object |
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Answer» HOPE it HELPS!!! PLEASE MARK As BRAINLIEST. |
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| 25. |
Find the value of Boltmann constent K↓b with proper unit, give univresal gas constant R=8.314j mol^-1K^-1 and Avogadro number N↓A=6.02 10^23 mol^1. |
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Answer» Boltzman CONSTANT=R/N Where, R=universal gas constant =8.314Jmol^-1K^-1 N=avagadro NUMBER =6.02x10^23mol^1 K=8.314Jmol^-1K^-1 / 6.02x10^23 mol^1 K=1.38x10^23Jmol^-2K^-1 :S.I. UNITS =1.38x10^28ergmol^-2K^-1 : C.G.S units Hope it helps you PLEASE mark it as brainliest |
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| 26. |
A stone tied to an end of a string 40cm long is whirled in a circle at a constant speed. If the stone makes 28 revolutions in 20 second. Calculate the magnitude of its linear velocity |
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Answer» I HOPE IT'S USEFUL FOR US. . . . PLZ MARK ME AS BRAINLISTS. . . . .......S MBA. ........ |
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| 27. |
What thing is vertifiedGermer experiment?by Davisson -itand minority |
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| 28. |
a stone is allowed to fall from a tower of height 200 metre and at the same time another stone is projected vertically upward from the ground at a velocity of 20 metre per second calculate when and where the stone will meet |
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Answer» Answer: Explanation: STONE thrown from the tower u = 0 g = -10 m/s2 s = - (200- x) s= ut +1/2 at2 -(200 - x) = 0 - 1/2 10 X t2 ................................................. (1) For UPWARD direction, u = 20 m/s g = -10 m/s2 s = +x +x = 200 t - 1/2 10 t2 .............................................................(2) Substracting 1 and 2, we get, 200 = 20t t = 10s x = 20 X 10 - 1/2 X 10 X 10 (square) = 200 - 500 m = 300 m I don't know the answer Sorry |
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| 29. |
Does the earth acts like a bar magnet why or why not |
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Answer» the earth BEHAVES like a MAGNET but there are no magnets inside the earth. the earth's magnetic north pole is in GEOGRAPHIC SOUTH. |
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| 30. |
what is the fundamental limitation to the efficiency of a heat engine in the light of second law of thermodynamics? |
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Answer» fhxhbxoc fqhfum jlfmuckgjf9e7xlur |
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| 31. |
What isthe value of electric field intensity at any point inside a solid charged conducting sphere. |
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Answer» Answer: Explanation: As the charges on a conductor are CONFINED to its SURFACE and no charge is enclosed inside the sphere. So, by gauss's law As the charge is zero inside the conductor, hence the ELECTRIC flux is zero inside the conductor and thus, the Electric FIELD intensity is zero inside the conductor. |
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| 32. |
Find the excess pressure inside a mercury drop of radius 2.0mm.This surface tension of mercury= 0.464Nm^1. |
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Answer» PLEASE MARK it as BRAINLIEST , if it is CORRECT. |
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| 33. |
True or false. In human two lunges are present in abdominal cavity |
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| 34. |
An object gains excess negative charge being rubbed against another object which is ...........a) neural.....b)negative charges..... c)positive charged.... d) all these |
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Answer» Answer:hguhjij HI jjhjvhjn in SUNNY hung Explanation: |
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| 35. |
Name A device which converts sound energy into electric energy |
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Answer» hello MATE here's your ANSWER for your Question is MICROPHONE if you like it MARK this as brainliest Answer |
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| 36. |
F = Gm1m2/d²what will be formula form1 = m1m2 = 2m2d = dtell me why answer is not F = Gm1 2m2 / d²please don't give foolish answers !!! |
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Answer» Answer: as u put m2 with 2M2 in Gm1m2/d² then formula of F gone change to Gm12m2/d².. if u LIKE please mark as brainlist answer |
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| 37. |
A wire in a circular shape has 10 Ω resistance. The resistance of wire per 1 m length is 1 Ω. If the equivalent resistance betwen A and B is 2.4 Ω, then the length of the chord AB will be equal to ______ meter.(A) 2.4(B) 4(C) 4.8(D) 6 |
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Answer» Answer: sory for inconvenience EXPLANATION:dear FRIEND im not expert in PHYSICS ill help u in others |
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| 38. |
What do u mean by electroplating |
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| 39. |
The effect of electric current which electric irons room heater and water heater use |
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Answer» Answer: Applications of the Heating Effect of CURRENT (1) The heating effect of electric current is utilised in the WORKING of electrical heating appliances such as electric ROOM heater, electric iron, electric kettle, electric toaster, electric oven, water heater (geyser), IMMERSION rod, and SOLDERING iron, etc. Explanation: I hope it helps you... |
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| 40. |
The sole of shoes get worn after some time. Explain why? |
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Answer» the soles of shoes are worn out due to the EFFECT of friction . the soles of shoes increase the friction between surfaces because it makes the SURFACE of the shoes rough . thus , this is due to the FACT that friction CAUSES wear and tear of objects and REDUCES the life of the object . |
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| 41. |
In a cyclic process the internal energy of a gasa) increaseb) remains constantc) decreased) become Zero |
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Answer» •Increase : Heat ADDED to the system increases the INTERNAL energy. Heat removed from the system decreases the internal energy. In a cyclic process the system returns to its initial state and so the internal energy is not changed. The heat added to the system equals the work done by the system. •Remains constant : In an isothermal process, the temperature of the IDEAL gas remains constant. In a cyclic process, the initial and final temperatures (states) are the same. The internal energy of the gas is a function of temperature, hence if the temperature of initial and final states is the same. •Decrease : Heat added to the system increases the internal energy. Heat removed from the system decreases the internal energy. In a cyclic process the system returns to its initial state and so the internal energy is not changed. The heat added to the system equals the work done by the system. •Become zero : The internal energy does not become zero for any system except at the ABSOLUTE Zero of temperature. ... But by returning after each completed cycle to the original state, that GUARANTEES the system returns to the initial temperature. And the internal energy of an ideal gas only depends on its temperature. Hope it helps uh.....Mark me as brainlist..... |
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| 42. |
his project is like, a ray of light should travel through a medium and it should split and travel through 3 different rooms. One room (party light), other room (shadowed light) and another is normal light |
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Answer» The basic element in geometrical optics is the light ray, a hypothetical construct that indicates the direction of the propagation of light at any point in space. The origin of this concept dates back to early speculations regarding the nature of light. By the 17TH century the Pythagorean notion of visual RAYS had long been abandoned, but the observation that light travels in straight lines led naturally to the development of the ray concept. It is easy to IMAGINE representing a narrow beam of light by a collection of parallel arrows—a bundle of rays. As the beam of light moves from one medium to another, reflects off surfaces, disperses, or comes to a focus, the bundle of rays TRACES the beam’s progress in a simple geometrical manner. |
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| 43. |
The efficiency of the carnot heat engine is a)100%,b 24%,c50%d)30% |
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Answer» The EFFICIENCY of the CARNOT HEAT ENGINE is 100% . |
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| 44. |
What is potential energy |
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Answer» The stored in a BODY which is RESTING is CALLED POTENTIAL energy |
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| 45. |
You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality one is heavier than the other. Can you say which one is heavier and why? |
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Answer» both are of the same WEIGHT.......... |
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| 46. |
If two soap bubbles have radii in the ratio of 1:2 then the ratio of excess pressure will be? |
Answer» ≡QUESTION≡If two soap BUBBLES have radii in the ratio of 1:2 then what is the ratio of the excess pressure ? ║⊕ANSWER⊕║The excess pressure inside a soap bubble is denoted by the formula: Δ P = 4S / R Excess pressure is INVERSELY proportional to the radius for a GIVEN fluid. GIVEN R₁/R₂ = 1/2 p₁/p₂ = (4S/R₁) / (4S/R₂) p₁/p₂ = R₂/R₁ p₁/p₂ = 2/1 ∴ The ratio of excess pressure in the two soap bubbles will be in the ratio 2:1 (INVERSE of radius ratio). |
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| 47. |
you find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg? Please explain properly with steps. |
Answer» ≡QUESTION≡You FIND your MASS to be 42 KG on a weighing MACHINE. Is your mass more or less than 42 kg? SOMETHING YOU SHOULD KNOW FIRST
So, due to upthrust , the body appears to loose some weight. As a result, our apparent weight becomes less than the true weight. ║⊕ANSWER⊕║
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| 48. |
What is principal of electric motor????? |
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Answer» converts electrical ENERY into mechanical energy.... HOPE IT HELPS U.... |
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| 49. |
During volume expansion of solids ,only volume increase |
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Answer» when the VOLUME INCREASES the DENSITY of the SOLID decreses mark as breinliest |
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| 50. |
what is a progressive wave? what are its types. establish the displacement relation for harmonic wave travelling aloing the positive direction of x-axiswhat is a progressive wave? what are its types. establish the displacement relation for harmonic wave travelling aloing the positive direction of x-axis |
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Answer» A progressive WAVE is a wave where continuous energy transfer takes place between the crest and through(TRANSFERS wave) or between rarefactions and compressions. There are two TYPES of wave transverse and longitudinal Amplotude is the maximum DISPLACEMENT of a particle In a wave from it's equilibrium position |
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