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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.
| 2. |
The effective resistance of a parallel combination is register is ............... |
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Answer» Answer: This IMPLIES that the total RESISTANCE in a parallel circuit is equal to the sum of the inverse of each INDIVIDUAL resistances. Therefore, for every circuit with n NUMBER or resistors connected in parallel, Rn(parallel)=1R1+1R2+1R3… |
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| 4. |
Rules of Reflection of light don't spam plzz answer fast class 7 physics chapter light |
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| 5. |
what is the meaning of the word which is not present in my room and took the centre of you mid day meal, and jumped on the roof when it was raining and the alien saw dance on swalla of jason derulo and then suddenly came to your tongue, you thought its irrelevent question and you touched the three dots and clicked report this answer and moderator is watching this question, hii moderator delete my question because you mind has some brain disability so.... well done congrats bye idk why!! |
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Answer» Answer: Idk Explanation: |
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| 6. |
Plzz answer this can you watch wwe |
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Answer» Explanation: Ya You Can WATCH WWE in YouTube |
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| 7. |
Define mobility? Mention its S.I. unit... |
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Answer» Answer: Mobility of the charge CARRIER is DEFINED as the DRIFT velocity of the charge carrier per UNIT electric field. It is DENOTED by m and is given as. The SI unit of m is m2 V−1 s−1. Explanation: please Mark me as Brainlist |
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| 8. |
A train accelerates from 36 km/h to 54 km/h in 10 sec.(i) Acceleration(ii) The distance travelled by car. |
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Answer» (i) a = (v-u)/t = (54-36)/10 = 18/10 = 1.8m/s² (II) s = ut+1/2at² = (36×10)+1/2×1.8×10² = 360 + 1/2×1.8×100 = 360 + 90 = 450m |
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| 9. |
The pressure due to a liquid column at a point is 2 x 10 Nm ? If the density of the liquidis 1.2 x 10 kgm find the height of the liquid column (g=9.8m/s2) |
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Answer» Vertical length of ALCOHOL column = h = 0.8 m Density of alcohol = ρ = 0.80 g cm -3 \rho=\frac{0.80 \times 10^{6}}{10^{3}} \mathrm{kgm}^{-3} ρ = 0.80 x 1000 kgm-3 . ρ = 800 kg m-ρ = 800 kg m-3 Pressure = P = ? p= hpg P = 0.8 x 800 x 10 = 6400 Pa Explanation: please like and FOLLOW me mark as vote |
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| 10. |
A porter lifts a luggage of 15 kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage. |
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Answer» Answer: 225J Explanation: M = 15kg g = 10m/s^2 h = 1.5m As work done by an object is equal to the POTENTIAL ENERGY STORED in an object. Therefore, W = MGH = 15×10×1.5 = 225J. |
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| 11. |
Obtain an expression for frequency of revolution of the bob in a conical pendulum |
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| 12. |
Fundamental Quantity |
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Answer» The Fundamental QUANTITY is independent Physical Quantity that is not possible to express in other Physical QUANITITY. It is used as pillars for other QUANTITIES AKA Derived Quantities. In Physics, Length, Mass, Time, Electric Current, THERMODYNAMIC Temperature, etc are examples of Fundamental Quantities. ♡___Pɾҽɾɳα Hҽɾҽ___♡ |
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| 13. |
state parallelogram law of vector addition derive expression for resultant by analytical methods .how direction of resultant can be find |
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Answer» According to parallelogram law of vectors the RESULTANT is represented by the diagonal passing through the point of CONTACT of two vectors. To find the magnitude of resultant , produce a PERPENDICULAR CD to meet OA produced to D. From △ OCD, OC2=OD2+CD2. |
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| 14. |
A 4.3 kg block hangs from a spring with constant 2120 N/m the block is pulled down 6.20 cm from the equilibrium position and given an initial velocity of 1.5 m/s back towards equilibrium what is frequency of the motion and what is total mechanical energy of the motion |
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Answer» rffffdffddffeereerre Explanation: hhhhhiytgk |
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| 15. |
Explain resolution vector with daigram |
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Answer» Answer: VECTOR RESOLUTION is a process where ONE vector is BROKEN down into two or more smaller vectors. This INCLUDES the process where one vector is broken into two components, which was discussed in much more detail in another lesson. ... You could say that vector C has been resolved into two separate vectors, A and B. |
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| 16. |
children can give examples for acid,base,natural indicators,synthetic indicators and olfac tory indicators |
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Answer» Answer: examples; acid: curd, tarmari, lemon base: WASHING SODA, caustic soda, caustic potash natural indicators: LITMUS, turmeric, red cabbage olfactory indicators: onion, vanilla synthetic indicators: Phenolpthalin, methyl orange PLEASE FOLLOW ME !!!!! |
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| 17. |
Two identical blocks each of mass 3kg placed on a frictionless table as shown in the figure,are pushedby a force of 30N. Calculate.force on block B by the block A |
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Answer» Answer: 90 force of block B by the A Explanation: |
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| 18. |
A body starting from rest accelerate uniformly at the rate of 100m/s-2 for 10 seconds. Calculate the final velocity at the end of 10 seconds and the distance travelled during this interval. |
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Answer» u=0 a=100m/s^2 t=10 s v=? s=? v=u+at v=0+100[10] v=1000m/s s=ut+1/2 at^2 s=0[10]+1/2 [100][10][10] s=1/2[10000] s=5000 m Thank you HOPE it helps !!! have a nice day |
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| 20. |
What are the advantages of drawing a graph where reducing errors than averaging |
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Answer» Answer: Explanation: The knowledge that any individual measurement you make in a LAB will LACK perfect precision often leads a researcher to choose to TAKE multiple measurements at some independent variable level. Though no one of these measurements are likely to be more precise than any other, this group of values, it is hoped, will cluster about the true value you are trying to measure. This distribution of data values is often represented by showing a SINGLE data point, representing the mean value of the data, and error BARS to represent the overall distribution of the data. |
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| 21. |
The dimension formula of |
Answer» Answer:4π^2 g ( 4 is a dimensionless quantity or π ALSOwhile ^2 is an exponent)[g] = [ LT^-2]So, the dimensional formula of 4π^2 g is LT^-2.Explanation:hope you LIKE it!If u like it than thanks my answer pls☺️☺️ |
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| 22. |
Three forcesF, = si +6 } + 7k, F, = -31 - 23-2k =& F = -2i - 4– 3Â act on a body. What isthe direction of the resultant force acting onbody ? |
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| 23. |
Explain the specification of resister |
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Answer» POWER DISSIPATION SPECIFICATION. Power de-rating specification |
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| 24. |
Derive Lens maker's formula for convex lens..... |
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Answer» Answer: Derivation for lens MAKER formula: Consider a convex lens having an optical centre at O. Let F be the principal focus of the lens and f is the focal LENGTH of the lens. An object AB is placed perpendicular to the principal axis of the lens at a distance BEYOND the focal length f of the lens. Explanation: HOPE this answer helped u thx pls mark me as brainliest |
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| 25. |
What is cosmology ♡♡♡♡♡♡? New on This platform myself Yuvika❤ |
Answer» Heya........❤==> Cosmology is the SCIENCE of the origin and development of the universe. MODERN cosmology is dominated by the Big Bang theory, which BRINGS together observational astronomy and particle physics...Have a great day AHEAD.......✌☺ |
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| 26. |
For the steady current ,the value y div J O isJ® स्थिर वर्तमान के लिए, मूल्य y div हैSelect one:(0) A. 220 C.( D. 1 |
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| 27. |
a metal sphere is charged with negative charge.which of the following cannot be the amount of charge received by the sphere |
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Answer» ग्द्प्9ाप9्रै0ैल9ैले9्लदंप्वमदल्देकग्वेदनाग्वदेवद्वाग्रल्दैवो8्व्9्र |
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| 28. |
Write any five properties of ferromagnetic materials..??... |
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Answer» Answer: Properties of FERROMAGNETIC Materials Properties of Ferromagnetic MaterialsThe atoms of ferromagnetic SUBSTANCES have permanent dipole moment PRESENT in domains. Properties of Ferromagnetic MaterialsThe atoms of ferromagnetic substances have permanent dipole moment present in domains.Atomic dipoles in ferromagnetic substances are ORIENTED in the same direction as the external MAGNETIC field. Properties of Ferromagnetic MaterialsThe atoms of ferromagnetic substances have permanent dipole moment present in domains.Atomic dipoles in ferromagnetic substances are oriented in the same direction as the external magnetic field.The magnetic dipole moment is large and is in the direction of the magnetizing field. |
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| 29. |
8. Draw magnetic field lines around a circular conductor carrying current. |
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Answer» Answer: Concentric CIRCLES are formed, which are centered at the point on both sides of the loop as shown in figure. The lines near the center of the loop are almost STRAIGHT. The magnetic field at the center of the loop is perpendicular to the plane of the loop. The concentric circles BECOME larger as we move away from the wire because as the distance increases from the current CARRYING conductor the strength of the magnetic field FADES away. |
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| 30. |
5Differentiate between Universal gravitation constant and acceleration due to gravity |
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Answer» Answer: ✅it is gravitational constant. ✅the gravitational FORCE between TWO bodies of unit masses separated by a unit distance is known as universal gravitational constant. ... ✅the acceleration produced in a body falling freely under the ACTION of gravitational pull of the earth is known as acceleration due to gravity. Explanation: I HOPE this answer is helpful to you so PLZ mark me as brainlist.... |
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| 31. |
Drae a figure showing the path of ray of light at an angle entering from air to water |
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Answer»
HOPE u have UNDERSTOOD it !
It will bend towards the NORMAL . As it is from rarer to denser MEDIUM . |
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| 32. |
The temperature at which the kineticgas molecules isdoubled to its value at sfocisa gasenergy of |
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Answer» hi Explanation: |
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| 33. |
What is a ohm's low ? write any tow limitations of it. |
Answer»
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| 34. |
A body cools from 80°c to 60°c in 2minutes. in how much time it cools from 60° to 40°c ? the temperature of the surrounding is 10°c |
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Answer» 2 minutes Explanation: the DIFFERENCE between 80 and 60 is 20 Whereas, difference between 60 and 40 is ALSO 20. So the answer is 2 minutes. Mark me Brainliast |
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| 35. |
The equation of state of gas is given by (P+a/v³) , (v-b²)=ct where P,V,T are pressure, volume and temperature respectively and a,b,c are constants the dimensions of a and b are ? |
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| 36. |
The equation v²=u²+2as gives the relation between ----------. *1 pointdisplacement and timedisplacement and velocityvelocity and distancevelocity and time |
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| 37. |
Obtain an expression for magnitude of the resultant of two vectors. |
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Answer» write full question please |
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| 38. |
a body starts from rest and moves under constant acceleration "a" for time t reduce (a) anylitically and (b) graphically the expression for the velocity and displacement of body after time "t" |
Answer» ??? MENTION QUESTION PROPERLY |
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| 39. |
A sphere of mass 40 kg is attracted by another sphere of mass 80kg by a force of2.5 x 10 ^-6 N when the centres are 3x10^-2 m apart find the value of G |
Answer» GIVEN:
TO FIND:
SOLUTION:Use this formula: Where:
Substitute. ▣ Use the radicle rule : (a×b)ⁿ=aⁿ×bⁿ to simplify the denominator. ▣ Use the radicle rule = (mᵃ)ᵇ=mᵃᵇ. Moreover, 3²=9 and 40×80 = 3200. ▣ Now transpose. G is 7.03×10⁻¹³ N·m²/kg². |
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| 40. |
The points P and Q have thecoordinates (7,5, -2) and (-1, 2, 7) respectively. What is the magnitude of PQ ? |
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Answer» Explanation: C) The c's are all ZERO or not all zero D) All of the dove Spherical polar coordinates are used in the solution of the hydrogen atom Schrodinger equation because : A) Laplacian operator has its SIMPLEST form in spherical polar coordinates B) Cartesian coordinates would give particle-in-a-box wave functions C) Schrodinger equation is then SEPARABLE into 3 ordinary differential equations D) Otherwise the atomic ORBITALS would violate the Pauli exclusion principle peradoras de Mehinner MANAGER |
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| 41. |
If the percentage error in measuring the radius of sphere is 2%, then what is thepercentage error in calculating the volume of the sphere. |
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Answer» V≈33.51V=4 3πr3=4 3·π·23≈33.51032 |
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| 42. |
What is newton's secondlaw of motion and Write the statement and derive it. |
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Answer» Answer: Newton's SECOND LAW of motion states that the acceleration of a SYSTEM is directly proportional to and in the same direction as the NET external force acting on the system, and inversely proportional to its MASS. |
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| 43. |
Discuss about the radiation from stellar objects, especially in detail about our sun radiation spectrum and compare with other stars. Estimate the sun’s temperature based on the peak emitted wavelength. Also predict the colour of star’s having following temperatures: (i)20000K, (ii)18000K, (iii)4000K. |
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Answer» .................! |
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| 44. |
The mass of an iron ball is 90 kg which is droppedvon a heap of sand fromm a height of 9.8 m so that it penitrates 2 cm inside it what resistive force is applied by the sand on the ball |
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Answer» Answer: Jab TUMHE JINDAGI me KOI raasta dikayi na dekoi manzil dikayi naa De koi aapna dikayi naa detab NERE sath aana ham EYE SPECIALIST'''''''ke pass chalenge""""" --------------------------------- |
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| 46. |
Litin name of pottasiam is |
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Answer» PLEASE MARK as BRAINLIEST !!! |
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| 47. |
Body is thrown horizontally from the top of the tower of height 5 metres it touches the ground at the distance of 10 metres from the foot of the tower initial velocity of the body is |
Answer» ___________________★ Gɪᴠᴇɴ ★ ___________________☯ Tᴏ Fɪɴᴅ ☯
___________________✪ Sᴏʟᴜᴛɪᴏɴ ✪ Time of flight → T = √2H/g → T = √2×5/10 → T = 10s Initial velocity of the projectile → u = R/T → u = 10/1 → u = 10 m/s ★ Initial velocity of the BODY is 10 m/s ___________________ |
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| 48. |
A block of cooper of density 8.9g/cm3measurres 5cm by 3cm by 2cm. Given that the force of gravity is 10 Nkg-1 determine the maximum pressure |
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Answer» sorry i DONT no... Explanation: |
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| 49. |
Mention any three applications of polaroids...??.... |
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Answer» Answer: 1) POLAROIDS are used in the LABORATORY to produce and analyse plane polarized light. 2) Polarized light is USEFUL to determine size and SHAPE of viruses. 3) They are used to improve colour contrasts in old OIL paintings. Explanation: PLS MARK AS BRAINLIEST ANSWER |
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