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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.
| 1. |
Derive expression for the energy levels and wave function of a particle enclosed in aninfinite potential well. Give the graphical representation of both the terms. |
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Answer» Answer: Solutions of time-independent Schrödinger equations provide many interesting predictions concerning quantum mechanical PHENOMENA. The following discussion is meant to provide insight into solving such equations for potential energy wells of the infinite and finite form. The steps taken for finding EIGENFUNCTIONS, eigenvalues, and wave FUNCTIONS will be EXAMINED mathematically. Their predictions will allow for interpretation of the physical significance of these quantities...... PLZZ mark me on brainlist |
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| 2. |
Identify 2-3 methods of transmission |
Answer» The most common and frequently used MODES are space WAVES, SKY waves, and surface waves.Explanation:
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| 3. |
Represent electric field lines due to a) positive chargeb) -ve chargec) 2 equal positive charge at a short distance.d) around a dipole. |
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Answer» hmmmm Explanation: |
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| 4. |
What is bauyancy fourc |
Answer» ♡ DEAR *----* ✧༺♥༻✧✧༺♥༻✧✧༺♥༻✧ When an object is IMMERSED in a liquid it experiences an UPWARD force known as BUOYANT Force. This PHENOMENON of experiencing an upward force is known as Buoyancy. ✧༺♥༻✧✧༺♥༻✧✧༺♥༻✧ ■baazHere ■FollowMe ■Thanks~ 'don't copy my style :p' MARK ME AS BRAINLIEST♡ |
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| 5. |
Four charges + q + q minus q minus q are placed on four corners of square abcd find net charge on a?.plzz solve then answer.. plzz |
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| 6. |
A stone is released from rest at the top of a tall tower if the final velocity is 3m /sec find the height of the tower and the time taken to reach the ground |
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Answer» u MEANS initial velocity is zero because stone in rest v is 3m/sec and ACCELERATION due to gravity is G means 10 then v=u-gt then t is 0.3 sec here g is - g because due to its direction and H= ut-1/2 gt^2 then H= 1/2×10×0.09 then H is 0.45 m |
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| 7. |
Name a substance of which the resistance remains almost unchanged by the increase in temperature |
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Answer» Answer: plzz follow me and like There can be many substances whose resistance remains almost UNCHANGED by INCREASE of temperature. Materials such as wood and air can be the ONES, which has a HIGH electric resistance and it changes rarely with the increase in temperature |
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| 9. |
Plz help in solving this question |
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Answer» Answer: OPTION 1 Explanation: consider a POINT x where the electric field is 0 so potential is a constant so potential due to either of them at x can be equated and can FIND the value of x |
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| 11. |
Please do it No spam please |
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Answer» HII mate please SEND the ATTACHMENTS too |
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| 13. |
Does an electric charge experience a force of due to electric field produced by itself? |
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Answer» Answer: It MAY be pointed out that the source charge does not EXPERIENCE any force DUE to electric field PRODUCED by it. The electric field due to a source charge has its own existence and is present EVEN if there is no test charge to experience the force. plz mark it as brainlist.. follow me..☺☺✌✌ |
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| 14. |
Si en Caracas (g=10,0 m/s 2 ) un péndulo simple cuya partícula tarda un segundo en desplazarse de unextremo a otro.a) ¿Cuál es el valor de su periodo?b) Inicialmente se desplazó 12 cm de su posición de equilibrio, determina la ecuación de la posición paraeste péndulo (elongación) |
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| 15. |
Why do the laws of physics don't apply in quantum physics |
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Answer» Answer: QUANTUM physics—the physics of atoms and other ultratiny objects, like MOLECULES and SUBATOMIC particles—is the most successful theory in all of science. But there’s something TROUBLING here. Quantum physics doesn’t seem to apply to HUMANS." |
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| 16. |
Does air exert friction on an object at rest? |
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Answer» Answer: Explanation: yes ,but it is highly negligable with RESPECT to the mass of the BODY and HENCE the effect or the FORCE is not appreciable. |
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| 18. |
The correct relation is(a)vector A=vectorB. (b)|vector A|=|vector B|. (c)vector A=vector B. (d)both (b)and (c). |
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| 19. |
An inclined plane is 30 meters long and 2 meters high. What is the mechanical advantage of the inclined plane? |
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Answer» Answer:15 Explanation: The mechanical favorable position for a slanted plane is MA=l/h or length divided by HEIGHT. Along these lines, connecting these FACTORS to the CONDITION, we would have it set up this way: MA = 30/2. At the point when 30 is divided by 2, you find your SOLUTION for mechanical advantage, which would be 15. |
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| 20. |
A bullet was thrown vertically upwards from a height , reaches it's maximum height in 4seconds. Calculate the initial velocity of the bullet and the total distance the bullet travels by the time it reaches the maximum height. |
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Answer» initial velocity =? time t = 4 sec g = 10 m/sec^2 by FORMULA v = u- gt v = 0 because BULLET is throughing upward hence 0 = u - 10×4 u = 40 m/ sec now by formula h = ut - 1/2 gt^2 h = 40 ×4 -1/2 10×4^2 = 160 - 80 = 80 meter |
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| 21. |
you changes placed in vacuum experience force of 4*10-³ n if a dielectric medium of k=2 dielectric constant is placed in between them.calculate the new force |
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Answer» F= kq1q2/r² F=2×q1q2/4π€€r Force is INVERSELY PROPORTIONAL to dielectric constant of the medium F1=F/2=2×10^-3 |
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| 22. |
An electron is accelerated through a potential difference of 500 V. Its de Broglie wavelength would be |
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Answer» h=planks CONST =6.6×10^-34 Mass of ELECTRON =9.1×10-31 Voltage= 500 Wavelength (W) = h/√2mKE = h/√2meV =6.6×10^-34/√2×9.1×10-31×500 =6.6×10^-34/√910×10-30 =6.6×10^-34/30.1×10-15 =0.219×10-19 |
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| 23. |
A person hears a thunder 3 seconds after a flash of lightning is seen. At what distance has the lightning struck? (velocity of sound in air = 340 m/s). pls give answer |
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Answer» Answer: Lightning and THUNDER are PRODUCED simultaneously, but the thunder is heard a few seconds after the lightning is seen. This is because the speed of light in air is more than the speed of sound in air. The speed of sound is 340 m/s.Thus, the entire TIME of 4 seconds (as mentioned in the question) between seeing the light and hearing the thunderstorm is taken by the sound to travel to the observer. Hence, the DISTANCE traveled by the thunder is given as follows.s=vt; where,s is the distance traveled, v is the velocity of sound and t is the time taken. That is, 340 * 3s = 1360 m.please MARK me as brainlists |
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| 24. |
What is the relationship between cgs and si unit of potential? |
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Answer» no RELATIONSHIP in between |
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| 25. |
which of the following has no unit 1) permeability 2 )movement of magnet 3) magnetic susceptibility 4)permittivity |
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Answer» Answer: 2 )MOVEMENT of magnet Explanation: |
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| 26. |
A bullet was thrown vertically upwards from a heigh ,reaches it's maximum height in 4seconds calculate the initial velocity of the bullet and the total distance the bullet travels by the time it reaches the maximum height |
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Answer» Answer: t=4seconds during the upward motion u=unknown v=0[finally COMES to rest at maximum height] according to newtons law, v=u+at a=-10[acting DOWNWARDS that is against the motion if the bullet and hence taken as NEGATIVE] 0=u-10*4 u=40ms^-1 now for the upward motion, v^2-u^2=2as 0-40*40=2*-10*s s=80m for the upward motion therefore the total distance COVERED =2*80m=160m |
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| 27. |
Can a body have a charge of 4 ×10 /9c? Justify your answers |
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Answer» Answer: No, it can’t. CHARGE on a body should be an INTEGRAL multiple of 1.6 × 10^-19 C Mathematically Q = ne For this body n = Q/e = (4.0 × 10^-19 C) / (1.6 × 10^-19) = 2.5 2.5 is not an INTEGER. Therefore a body can’t have charge of 4.0 × 10^-19 C Read more on Brainly.in - brainly.in/question/1839697#readmore |
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| 28. |
an object is moving with constant velocity V metre per second on applying brake it stops in 2 seconds at a distance 20 metre find acceleration and velocity v |
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Answer» VELOCITY is 20m/s and ACCELERATION is 10m/s² |
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| 29. |
SINGLE CORRECT QUESTIONSDRRECT MARK: 4, NEGATIVE MARK: -1A body of mass 3.0 kg moves under the influenceof some external force such that its position S asa function of time t is given by S = 6t-t? + 1 whereS is in metres and t is in seconds. The work don(in joule) by the force in first three seconds is :-(A)18 ](B) 1800 J(C) 3660 J(D) 36504 J |
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| 30. |
Ωнαт ıs тнє sнσятєsт ωαѵєłєηgтн ρяєsєηт ıη тнє ραscнєη sєяıєs σƒ sρєcтяαł łıηєs?plz btado koimeri calculation galat ho rahi hai |
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Answer» SHORTEST WAVELENGTH is 8204 Armsrong |
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| 31. |
What If You Are left Alone in Space without space suit |
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Answer» Answer: u will DIE soon......... as u will not be able to breathe and your BLOOD will STOP RUNNING and will result in death. |
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| 32. |
A cylinder is charged by 10 mC. Length of the cylinder is 1km and radius is 1mm . Surface density of charge ofcylinder is a. 1.59 x 10 -4 C/m2 b. 1.59 x 10-2 C/m2 c. 1.59 x 10-3 C/m2 d. 1.59 x 10-5 C/m2 |
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Answer» what should be the answer |
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| 33. |
Can You Still Get An Electric Shock If Your Wearing Rubber Shoes? |
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Answer» Answer: No, you cannot GET an electric shock if your wearing RUBBER shoes. Because, rubber is a bad CONDUCTOR of electricity! |
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| 34. |
Calculate the current in circut,if 250C of charges passes through it in 5 minutes |
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Answer» i= q/t 250/(5*60) 250/300=5/6 AMPERES.. PLEASE mark it as BRAINLIEST ❤️❤️ |
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| 35. |
Explain an example of motion which can shows motion is relative with the stationary object? |
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Answer» Answer: while you are TRAVELLING in a VEHICLE all the things ALONG the ROAD LIKE trees or plants are stationary |
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| 36. |
Can electic current pass through PVC rod |
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Answer» no because it is BAD CONDUCTOR of ELECTRICITY |
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| 37. |
Give reason transmission Tower mobile tower and Dam have broad surface. Why? |
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Answer» because it have a SIGNAL for ROUTER and it is a GOOD for TALKING |
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| 38. |
What is power of lens |
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Answer» Power of lens is the ability of the lens to converge the rays of light falling on it. ______________________________________________
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| 39. |
. Two resistors of one ohm each is connected in parallel to a one volt battery. Find the total current in the circuit. Plz answer with proper steps. |
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Answer» The answer to this QUESTION is = 2 Ampere Explanation: R1 = R2 = 1 ohm V = 1 V The effective resistance of the resistors CONNECTED in parallel = 1/R = 1/R1 + 1/R2 1/R = 1/1 + 1/1 1/R = 2/1 R = 1/2 = 0.5 ohm The current flowing in the circuit is = I = V/R I = 1 / 0.5 I = 2 Ampere I HOPE IT WILL HELP YOU. |
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| 40. |
Two resistors 3 ohm and 6 ohm are connected in parallel and the combination is connected to a 4 V battery. Calculate the total resistance and the total current in the circuit. Plz answer with proper steps. |
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Answer» Explanation: for PARALLEL combination of resistance formula is 1/R = 1/ R1 + 1/R2 + 1/ R3 here R1 = 3 ohm R2 = 6 ohm HENCE total resistance = 1/3 +1/6 1/R = 2+1/6 = 3/6 =1/2 1/R = 1/2 so R = 2 ohm this is total resistance of circuit Now given V = 4 VOLT so by ohm's law V = IR I = V/R so I = 4 / 2 = 2 ampere |
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| 41. |
A charge Q of mess M revolves around a point charge q, due to electrostatic attraction. Show that its period of revolution is given by, MR TQq 3 32 16. |
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Answer» CHECK ATTACHMENT for SOLUTION |
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| 43. |
Resistors 4 ohm and 8 ohm are connected in series and the combination is connected to a 6V battery. Calculate the total resistance and total current in the circuit. Plz answer with proper steps. |
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Answer» net resistance=r1+r2=4+8=12 ohm we KNOW that, V=IR V=voltage,I=current,R=resistance 6V=I*12 CURRENT=6/12=0.5A |
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| 44. |
A body moves frm A to B & returns Bto A wht is total displacement |
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Answer» Answer: 0 when the FINAL POSITION is same as of INITIAL so the displacement WOULD become zero |
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| 45. |
Do we need a banked road for two wheeler.explain |
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Answer» Why banking is necessary for a curved road? Banking of road is the process of raising OUTER edges of a road over its inner edge through certain angle. When a vehicle moves on a curved horizontal surface, FRICTION force between wheels and road PROVIDES the necessary centripetal force. |
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| 46. |
Please give me the answer with reason or solution |
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Answer» Explanation: HOPE this will be helpful to you and PLEASE mark my answer as the brainleast answer.plz plz plz....... |
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| 47. |
A ball of mass 200 gm moving with a speed of 30m/s is brought at rest by a playerin 0.3s . Find ---< i > change in the momentum of ballthe average force applied to the ball |
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Answer» CHANGE in MOMENTUM is ginal momentum -INITIAL momentum ∆p =m*(V-u) =200*(30-0) =6000gm-m/s =6kg-m/s |
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| 48. |
A ball of mass 0.20kg is thrown vertically upward with an initial velocity of 20 metre per second calculate the maximum for energy of green as the is it gives |
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Answer» Answer: |
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