This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 64451. |
find the surface charge density of a plane sheet of finite thickness having an elecrric field of 300v/m acting downwards near the surface of sheet |
| Answer» SEE the imageExplanation:HOPE you UNDERSTAND | |
| 64452. |
How are wastes classified on the basis of their physical state |
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| 64454. |
PLEASE ANSWER AND EXPLAIN!!! A shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff. The shell strikes the ground 1330 m from the base of the cliff. The initial speed of the shell is? a) 4.0 m/s b) 9.8 m/s c) 1.7 × 10² m/s d) 3.3 × 10² m/s |
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| 64455. |
8*. According to the First Law of Thermodynamics (a) Heat neither enters nor leaves the system (b) Heat Is constant in isothermal process (c) Energy is conserved (d) None of these |
| Answer» B)HEAT is CONSTANT in ISOTHERMAL PROCESS | |
| 64456. |
State main type of energy |
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Answer» Heymate! here is your answer There are two main types of energy :-KINETIC energy and POTENTIAL energy.Hope it helps you DEAR PLZ mark as Brainliest! ❤ And HAPPY Holi |
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| 64457. |
Draw a figure showing the following incident Ray normalangle of incidence angle of reflection point of incidencereflected ray |
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Answer» 1.= |
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| 64458. |
What do you mean by the word MARMEE ???? |
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Answer» Wineapple MENTIONS the UNUSUAL nickname — “ 'Marmee,' as her DAUGHTERS called her” — but does not discuss its pronunciation. The ALCOTT (and March) girls, New Englanders all, would have pronounced the “r” as “AH” when they referred to their mother. In other words, they called her “Mahmee” — or “Mommy”!Plz thanks on my Answer......❤ |
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| 64459. |
Length of eyebell is |
| Answer» LENGTH of eye BALL in birth is 17mmlength of eye ball in ADULT is 24MM | |
| 64460. |
A ten paisa coin placed on the revolving table flies off tangentially. This is due to (a) Inertia of direction (c)Inertia of rest (b) Inertia of motion (d) None of these |
| Answer» B INERTIA of motionExplanation:newton's FIRST LAW of MOTION | |
| 64461. |
What is wats how to use it's |
| Answer» NOBODY KNOWS what is watsExplanation:SCIENTISTS are ALSO SEARCHING for it | |
| 64462. |
When we immediately cool the heated can then it bend inwards from all sides Why does this happen? Give suitable reason.Please answer |
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Answer» that HEAT expands and cool shrinks so if there is hot air inside the can then the hot air would expand inside but if we MIX cold air immediately then it would SHRINK and HENCE this reaction would crush the can . hope it helped : ) |
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| 64463. |
Answer the question please |
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Answer» 8888888888888888888 |
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| 64464. |
Work done on or by a gas, in general depends upon the (a) Initial state only(6) Final state onlyRoth initial and final states only. (Initial state, final state and the path |
| Answer» TION:@) initial state ONLYPLEASE MARK as BRAINLIEST | |
| 64465. |
Velocity V ( x) is equal to 2x displacement of body at t is equal to 2 second |
| Answer» QUATION of MOTION s=ut+1/2at^2urs ANSWER is S(DISPLACEMENT)=1/10X | |
| 64466. |
Kinetic energy of satellite is 2438 Joule what is the total energy |
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Answer» tion:The KINETIC ENERGY of a SATELLITE in a circular orbit is half its gravitational energy and is positive instead of negative. When U and K are COMBINED, their total is half the gravitational potential energy |
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| 64467. |
Who is the father of physics |
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Answer» EinsteinAlthough the TITLE "Father of Physics" has not been given to a single individual, Galileo Galilei, Sir ISAAC Newton, and Albert EINSTEIN have all been called fathers of physics in western cultures. |
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| 64468. |
Write the value of 4i.(3k×2j) |
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Answer» -24Explanation:Multiply all CONSTANTS you GET 24kxj = - ii.(-i) = -124 X -1 = -24 |
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| 64469. |
Thermal energy is produced when a firefighter slides down a pole. Where does it come from? |
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Answer» It comes from the kinetic energy of the fireman DUE to his motion & the gravitational potential energy due to his raised position above the pole. As he slides down the pole, the KE and GPE are CONVERTED into heat energy and sometimes SOUND energy. |
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| 64470. |
A pair of adjacent coils has a mutual inductance of 0.98 H. Determine the average emf induced in the secondary circuit when the current in the primary circuit changes from 0 A to 9.88 A in a time interval of 0.0350 s |
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Answer» ,ANS. |
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| 64471. |
Explain the Guass law for magnetic field |
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Answer» helps youmark me a brainlistIn physics, 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. ... These forms are EQUIVALENT due to the divergence theorem |
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| 64472. |
Please answer the pinned question friends |
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Answer» Given:Velocity vs Displacement relationship as :Mass of OBJECT = 2 kgTo find:Work DONE in time 1 - 2 seconds.Concept:As per Work Energy Theorem , we can SAY that work done by all forces is equal to the change in Kinetic Energy in the specified time interval.Calculation:Assuming s = 0 , when t = 0 ;So our displacement vs time Equation comes as :So at t = 2 seconds , we get :Now PUTTING the values in work energy theorem :Work done = Change in KESO final answer : |
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| 64473. |
If velocity of a body projected up from the ground is increased by 300%. By what percentage the maximum height reached increases. |
| Answer» EXPLANATION:Max height attained by a projectile = , where A is the angle made by the velocity VECTOR with the horizontal. so , (directly proportional)Since velocity is increased by 300% ... i.e by 3 times ( )so, increases by times , i.e 9 times .So , increases by 900% .Hope it helps ya ! | |
| 64474. |
11. How do day and night occur? (AS) |
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Answer» Daytime is when you can see the sun from where you are, and its light and heat can reach you. NIGHTTIME is when the sun is on the other side of the EARTH from you, and its light and heat don’t get to you. Hope this answer helps you........FOLLW me......... |
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| 64476. |
5. Assume that a planet radiates heat at a rate proportional to the fourth power of its surface temperature T and that the planet assumes such a steady temperature that this loss of heat isexactly compensated by the heat gained from the sun. Show that other things remaining the same. a planet's surface temperature varies inversely as the square root of its distance from the sun. |
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Answer» Solution :-**refer to attached for the reference.First of all we will add some more information in the diagram in order to SOLVE it.As In AMG , A battery is connected we will take a current i_1i 1 Then according to Kirchoff's junction law at junction G.i_1 = I + xi 1 =I+xx = i_1 - Ix=i 1 −ISo current in GB = i_1 - Ii 1 −INow in FED we will take ANOTHER current i_2i 2 .I = i_2 + yI=i 2 +yy = I - i_2y=I−i 2 So current in FC = I - i_2I−i 2 Now by applying junction law at other junctions▪️Current in CB = II▪️Current in BA = i_1i 1 Now we will write LOOP For (anticlockwise)(1)AHGB-12 = 3R(i_1 - I) + R(i_1)−12=3R(i 1 −I)+R(i 1 )\implies -12 = 3Ri_1 - 3RI + Ri_1⟹−12=3Ri 1 −3RI+Ri 1 \implies -12 = 4Ri_1 - 3RI⟹−12=4Ri 1 −3RI ...(i)(2) AHFC-12 = 4R(I - i_2) + R(i_1)−12=4R(I−i 2 )+R(i 1 )\implies -12 = 4RI - 4Ri_2 + Ri_1⟹−12=4RI−4Ri 2 +Ri 1 ...(ii)(3) AHED24 - 12 = 2R(i_2) + R(i_1)24−12=2R(i 2 )+R(i 1 )\implies12 = 2Ri_2 + Ri_1⟹12=2Ri 2 +Ri 1 ....(iii)(4)CFED24 = 2R(i_2) - 4R(I-i_2)24=2R(i 2 )−4R(I−i 2 )\implies 24 = 2Ri_2 - 4RI + 4Ri_2⟹24=2Ri 2 −4RI+4Ri 2 \implies 24 = 6Ri_2 - 4RI⟹24=6Ri 2 −4RI ....(iv)Now 3(iv) - 4(i)72 = 18Ri_2 - 12RI72=18Ri 2 −12RI+ 48 = - 16Ri_1 + 12RI+48=−16Ri 1 +12RI________________________120 = 18Ri_2 - 16Ri_1120=18Ri 2 −16Ri 1 .....(v)________________________Now from (v) - 9(iii)120 = 18Ri_2 - 16Ri_1120=18Ri 2 −16Ri 1 -108= - 18Ri_2 - 9Ri_1−108=−18Ri 2 −9Ri 1 ________________________12 = -25Ri_112=−25Ri 1 ________________________Ri_1 = \dfrac{-12}{25}Ri 1 = 25−12 Now from by substiting value of Ri_1Ri 1 in (i)-12 = 4Ri_1 - 3RI−12=4Ri 1 −3RI\implies -12 = 4\dfrac{-12}{25} - 3RI⟹−12=4 25−12 −3RI\implies -12 = \dfrac{-48}{25}- 3RI⟹−12= 25−48 −3RI\implies 3RI = \dfrac{-48}{25} + 12⟹3RI= 25−48 +12\implies 3RI = \dfrac{300-48}{25}⟹3RI= 25300−48 \implies 3RI = \dfrac{252}{25}⟹3RI= 25252 \implies 3RI = 10.08⟹3RI=10.08\implies RI = 3.36⟹RI=3.36\implies I = \dfrac{3.36}{R}⟹I= R3.36 \implies I = \dfrac{3.36}{1000}⟹I= 10003.36 \implies I = 3.36 \: mA⟹I=3.36mASo current I = 3.36 mA |
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| 64477. |
ایسے میں برق رد استواری اور ایرانی از دستور اسے مارنے والی برقی رو سے رہا کو بلات ے کیا متهم شروع کیا اور اس میں استعمال ہوندکا ہنر ست تاب اور سنگین تر است |
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Answer» I cannot UNDERSTAND your LANGUAGEIS this URDU |
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| 64478. |
Which law or experiment does state that there will be a current flow with out batter |
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Answer» Gustav Kirchhoff's Current Law is one of the FUNDAMENTAL laws USED for circuit analysis. His current law states that for a parallel PATH the total current entering a circuits junction is exactly equal to the total current leaving the same junction. This is because it has no other place to GO as no charge is LOST. |
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| 64479. |
Ii) Two sources of sound are producing waves of frequency n, and n2, where (12-n2) is small, show mathematically that the beat frequency is (ny -n2). |
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Answer» tion:Solution :-**refer to attached for the reference.First of all we will add some more information in the diagram in ORDER to solve it.As In AMG , A battery is connected we will take a current i_1i 1 Then ACCORDING to Kirchoff's junction law at junction G.i_1 = I + xi 1 =I+xx = i_1 - Ix=i 1 −ISo current in GB = i_1 - Ii 1 −INow in FED we will take another current i_2i 2 .I = i_2 + yI=i 2 +yy = I - i_2y=I−i 2 So current in FC = I - i_2I−i 2 Now by APPLYING junction law at other junctions▪️Current in CB = II▪️Current in BA = i_1i 1 Now we will write Loop For (anticlockwise)(1)AHGB-12 = 3R(i_1 - I) + R(i_1)−12=3R(i 1 −I)+R(i 1 )\implies -12 = 3Ri_1 - 3RI + Ri_1⟹−12=3Ri 1 −3RI+Ri 1 \implies -12 = 4Ri_1 - 3RI⟹−12=4Ri 1 −3RI ...(i)(2) AHFC-12 = 4R(I - i_2) + R(i_1)−12=4R(I−i 2 )+R(i 1 )\implies -12 = 4RI - 4Ri_2 + Ri_1⟹−12=4RI−4Ri 2 +Ri 1 ...(ii)(3) AHED24 - 12 = 2R(i_2) + R(i_1)24−12=2R(i 2 )+R(i 1 )\implies12 = 2Ri_2 + Ri_1⟹12=2Ri 2 +Ri 1 ....(iii)(4)CFED24 = 2R(i_2) - 4R(I-i_2)24=2R(i 2 )−4R(I−i 2 )\implies 24 = 2Ri_2 - 4RI + 4Ri_2⟹24=2Ri 2 −4RI+4Ri 2 \implies 24 = 6Ri_2 - 4RI⟹24=6Ri 2 −4RI ....(iv)Now 3(iv) - 4(i)72 = 18Ri_2 - 12RI72=18Ri 2 −12RI+ 48 = - 16Ri_1 + 12RI+48=−16Ri 1 +12RI________________________120 = 18Ri_2 - 16Ri_1120=18Ri 2 −16Ri 1 .....(v)________________________Now from (v) - 9(iii)120 = 18Ri_2 - 16Ri_1120=18Ri 2 −16Ri 1 -108= - 18Ri_2 - 9Ri_1−108=−18Ri 2 −9Ri 1 ________________________12 = -25Ri_112=−25Ri 1 ________________________Ri_1 = \dfrac{-12}{25}Ri 1 = 25−12 Now from by substiting value of Ri_1Ri 1 in (i)-12 = 4Ri_1 - 3RI−12=4Ri 1 −3RI\implies -12 = 4\dfrac{-12}{25} - 3RI⟹−12=4 25−12 −3RI\implies -12 = \dfrac{-48}{25}- 3RI⟹−12= 25−48 −3RI\implies 3RI = \dfrac{-48}{25} + 12⟹3RI= 25−48 +12\implies 3RI = \dfrac{300-48}{25}⟹3RI= 25300−48 \implies 3RI = \dfrac{252}{25}⟹3RI= 25252 \implies 3RI = 10.08⟹3RI=10.08\implies RI = 3.36⟹RI=3.36\implies I = \dfrac{3.36}{R}⟹I= R3.36 \implies I = \dfrac{3.36}{1000}⟹I= 10003.36 \implies I = 3.36 \: mA⟹I=3.36mASo current I = 3.36 mAfollow me |
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| 64480. |
Calculate the number of photons emitted per seconds by a 50mw broadcasting antenna that emits radio waves at 5khz |
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| 64481. |
How is dimensional formula of joule derived |
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Answer» Joule is the SI UNIT of work done. THEREFORE, the dimensional formula of Joule is the same as that of the work done. ... Work (Joule)= F × D = [M1 L1 T-2] × [L1] = [M1 L2 T-2]. Therefore, Joule is DIMENSIONALLY represented as [M1 L2 T-2]. |
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| 64482. |
What is the use of electromagnetism |
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Answer» 1 .ELECTROMAGNETISM is used in making motors at COMMERCIAL levels2.it is used for making doorbells3.it is used in making electromagnet4.it is USEFUL in making toys |
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| 64483. |
What is inization energy |
| Answer» IONIZATION energy is the net NUCLEAR charge LEFT out of the ATOM when all other atoms of the compound have been REMOVED in their usual oxibe | |
| 64484. |
Pls say the answer fast with clear explaination I WILL MARK U BRAINLIEST |
| Answer» TION:i DONT KNOW that ans.sorry | |
| 64485. |
Explain the N_H bond engries. *HNH bond angle in NH3 (ammonia)molecule |
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| 64486. |
light and heavy object have same momentum .find out the ratio of their kinetic energywhich on has larger kinetic energy(frm this,it is obvios that light object wud posses more kinetic energy but ratio means,doesnt it require magnitude so pls help(3 mark questn)) |
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Answer» K1/K2 = M2/M1Explanation:According to the RELATION between. KE and LINEAR momentum (p) . We have , KE = Square of linear momentum ( P2)/ 2xMass So from the QUESTION it is clear that Bodies have same momentum . Linear momentum remains constant.Then we have a relation like , KE is inversely proportional to MASS |
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| 64487. |
2 16. Error in measurement of radius of a cylinder is3% and in length is 1%, then find the error inmeasurement of volume of cylinder?a) 4% b) 5% c) 7% d) 1%)'nunt four quantities a b c and d |
| Answer» ERROR 7%please MARK it as a BRAINLIEST ANSWER | |
| 64488. |
If X = AxB and ΔΧ, ΔΑ& ΔΒ are maximum absolute errors in X, A and B respectively, thenthe maximum relative error in X is given bya) ΔΧ = ΔΑ+ ΔΒ . ΔΧ ΔΑ ΔΒ“) ΧΑ, Βb) ΔΧ = ΔΑ-ΔΒ ΔΧ ΔΑ ΔΒΧ Α΄ Β,+- |
| Answer» AEXPLANATION: | |
| 64489. |
A body of mass 200kg per from circular motion ofradius 50cm at a constant sрееd of 240rpm findsits linear speed. |
| Answer» E here is your answerhope it helps you Given:Radius, R=0.5mAngular acceleration, α=2 rad/s 2 Time, t=2sAssumption:Acceleration asked is for a point on the rim.After 2 s, ANGULAR velocity is given by:ω=ω o +αtω=0+2×2ω=4 rad/sCentripetal Acceleration is given by, a c =ω 2 R=4 2 ×0.5=8 m/s 2 Tangential Acceleration is given by, a t =Rα=0.5×2=1 m/s 2 NET acceleration, a net = a c2 +a t2 a net = 8 2 +1 2 ≈8m/s 2 | |
| 64490. |
DateI f S = 12 6+2 tegt find relocit -s t=2sec & accle= 3 Secla |
| Answer» DUD dudbd whbwbshs HI this is ONLU answer568 | |
| 64491. |
A uniform ratio is rotating about one of its ends with a constant angular velocity in gravity free space. What is ratio strain produced in two halves? |
| Answer» RM ratio euww uebeb eje E ehejwbwhw thisbis of 12 sobitbwill not come | |
| 64493. |
What is difference between dispersion of light and scattering of light |
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Answer» tion:scattering of light from an OBJECT in all DIRECTION is called scattering of light.the phenomenon of splitting of white light into its cinstituent colours, when it passes through PRISM is KNOWN as despersion of light. |
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| 64494. |
Please ans this promptly |
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Answer» 0000000000000000000000 |
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| 64495. |
A flask contains 100 CC of liquid at 10°C. When it is heated to 110°C increase in volume of the liquid appear to be 2 CC.(a of flask is 11 x 10-6/°C) |
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Answer» only 10ccExplanation:because of VAPOUR |
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| 64496. |
If 100 sound waves reach your ear each second, what is their frequency |
| Answer» FREQUENCY of sound is 100 hz.i HOPE it will help u MATE.... | |
| 64497. |
Ge and Si diodes conduct at 0.3 V and 0.7 V respectively. The value of Vo is(1) 0.5 V(2) 0.4 V(3) 0.3 V(4) 0 V |
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Answer» of vo1)0.5 is the VALUE |
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| 64498. |
Give mirror image of word �AMBULANCE� |
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| 64499. |
a body is performing SHM having velocities 8cm/sec and 6cm/sec when it is at a distance of 3cm and 4cm from the mean position. Find it's time perio |
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Answer» sorry I didn't KNOW this answer EXPLANATION:because I am studying in class 9 sorry sister or BROWN |
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| 64500. |
Please give me a proper answer l will mark as branliest |
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Answer» tion:1) thermometer shows rapid FALL in temperature initiallybecause ice mixture AROUND the CYLINDER kal two EFFECTS on water and water temperature goes on decreasing the temperature of the water goes on decreasing the the volume of the upper water goes on decreasing and density increasing till 4° Celsius because of the increasing density upper water sinks to bottom and this results in decreasing temperature rapidly2) no3)when ice is form it's density goes on decreasing from 4°c to 0°c .bottom water has HIGHEST density |
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