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. |
From a sound box which rays emit |
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Answer» Properties of electromagnetic RADIATION and PHOTONS. ... Planck found that the electromagnetic radiation emitted by blackbodies could not be ... While this might sound confusing, we are ACTUALLY already very FAMILIAR with quantized systems. |
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| 2. |
Name the following compound (1) CH³COCH³. (2) CH³-CH²-CH²-OH |
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Answer» also known as propanone or dimethyla ketone. This ANS for FIRST compound.Second will be ethanol or ALCOHOL Hope this will help you If HELPED PLZ rate 5 starExplanation: |
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| 3. |
Define electric flux and give its s.I. Unit.Class 12 |
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Answer» ti:)ELECTRIC flux is the rate of flow of the electric field through a given AREA. Electric flux is proportional to the number of electric field lines going through a virtual surface.Electric flux has SI units of volt metres (V m), or, equivalently, newton metres SQUARED per coulomb (N m2 C−1). Thus, the SI BASE units of electric flux are kg.Keep smiling!!! |
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| 4. |
De broglie wavelength of neuron whose wavelength is |
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Answer» The DE BROGLIE wavelength of the incident BEAM was about 2.5 pm, WHEREAS the diameter of the MOLECULE is about 1 nm, about 400 times larger |
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| 5. |
The potential energy of a projectile at a maximum height is 3/4 times kinetic energytof projection.Its angle of projection is |
| Answer» SWER is 60 DEGREES . COMMENT me if the ANSWER is wrong. Thanks. | |
| 6. |
The potential difference between two poimts can be expressed as |
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Answer» if U mean how to FIND the potential DIFFERENCE then the expression: V=W/q can be USED |
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| 7. |
The position vector of a particle is determined by the expression |
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Answer» the position vector of a particle is DETERMINED by the expression R= 3t^{2} i+4t^{2}+7k.the DISTANCE |
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| 8. |
The motion in wich the object covers equal distance in equal intervals of time |
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Answer» uniform MOTION is covered equal DISTANCE in equal TIME INTERVAL |
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| 9. |
The mass of a bucket full of water is 15 kg it is being pulled up from a 15m deep well |
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Answer» I'm ANSWERING the question based on my understanding...m=15 kga=g=10 m/s²h=15 mForce=15×10 =150 Ndisplacement=height=15 mwork done=F.SW=150×15 =2250 N/mhope it HELPED and PLEASE mark as BRAINLIEST:) |
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| 10. |
The mass of the boy is 50 kg what will be his weight on the earth |
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| 11. |
The magnitude of resultant vector of two vector given by a equal to 3 icap + 15 j cap and b equal to 5 icap would be |
| Answer» TION:it'd sitstiditstistidtisitstisits | |
| 12. |
23. Figure shows (x, t), (y, t) diagram of a particle moving in 2-dimensions. If the particle has a massof 500 g, the force acting on the particle is(a) 1 N along y-axis(c) 0.5 N along x-axis(b) 1 N along x-axis(d) 0.5 N along y-axis |
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Answer» Hsbdbdbndndnndndndndnndnxbxbdbbdbdbsbbsbdbdbbdbdbbdbdb |
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| 13. |
MCQ type questions of chapter Laws of Motion class 11th physics |
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Answer» The First Law of Motion states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an EXTERNAL FORCE." ... It states, "The force ACTING on an OBJECT is equal to the mass of that object times its acceleration." |
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| 14. |
Formula newton of2 law motion |
| Answer» TION:F is PROPORTIONAL to CHANGE in linear momentum/ change in TIME | |
| 15. |
A ring of redius r is suspended from a point on its circumference. Determine its angular frequency of small oscillations. answer fast |
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Answer» ts as PHYSICAL PENDULUM, the time period of which is T = 2π√I/mglHere, I = moment of INERTIA of ring about POINT of suspension= mr^2 + mr^2=2mr^2and l = distance of point of suspension from center of gravity=rnow,T = 2π√2mr^2/mgr=2π√2r/gomega= w = 2π/T (angular frequency )PUTTING the value of T we get,w = √g/2rHappy to help!:) |
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| 16. |
The wall of a dam is made thicker at the bottom.Why? |
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Answer» At the bottom of the wall of ADAM the pressure is very high and the wall can break DUE to that pressure.This is the reason why the walls are MADE THICK. |
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| 17. |
Difference between uniform motion and nonuniform motion |
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Answer» ate!❣️° When an object change in POSITION with equal distance in equal INTERVAL of time is CALLED uniform motion..........° When an object change in position with UNEQUAL distance in equal interval of time is called non - uniform motion..............hope it might helped ufollow MEE guys✌️✌️ |
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| 18. |
Distinguish between ammeter and voltmeter and how do you connect them into circuit? |
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Answer» an ammetre is MEASURING device used to measure the ELECTRIC current in a circuit. a voltmeter is connected in PARALLEL with a device to measure its voltage while an ammeter is connected in series with a device to measure its current. |
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| 19. |
Coefficient of performance of carnot refrigerator formula |
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Answer» The efficiency of a refrigerator or heat pump is given by a parameter CALLED the COEFFICIENT of performance (COP). The COP of a refrigerator is given by the following EQUATION: COP = DESIRED Output/Required INPUT = Cooling Effect/Work Input = QL/W. |
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| 20. |
The length of day and night is not equal at all places on the earth.Give reason |
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Answer» Because of the revolution of the Earth.Explanation:The Earth Revolves around the sun and the SIDE which faces the sun EXPERIENCES the DAY and the side opposite to sun experiences the night. |
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| 21. |
The instrument which is used in plane tabelling for obtaining horrizontal and vertical distance directly without resorting is known as |
| Answer» TELESCOPIC alidade.Explanation: # FOLLOW me BACK ✌️ | |
| 22. |
The force of attraction between the particles of same substance is known as |
| Answer» INTERMOLECULAR FORCE of ATTRACTION | |
| 23. |
The forces which work on the surface of the earth are called earth surface |
| Answer» YES because the FORCES WORK on the SURFACE of the EARTH | |
| 24. |
The displacement of of a body by s=1/2gt^2, were g is acceleration due to gravity the velocity of body at any time t is. |
| Answer» TION:vyoh Uyveuxydktd ulguof | |
| 25. |
The current through a 120 mh coil is changing at a rate of 150ma/s.The voltage induced across the coil is |
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Answer» Hdud hfhhf jdhr hdjf jfjr JR |
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| 26. |
Find the total resistance when the three 30 kilo ohm resistor are connected in parallel |
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Answer» In CASE the resistances are equal, then effective resistance in PARALLEL is: R/N, where R is the value of resistance and N is the no of resistors in parallel. Now, as per your QUESTION, effective resistance is: R=3ohms; N=3 resistors in parallel. Hence, 3ohms/3 resistors in parallel= 1 OHM effective. |
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| 27. |
What is v stands for in formula for kinetic energy |
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Answer» Here's your answer#KINETIC energy = 1/2 mv^2#Here v STAND and for velocity.... HOPE it helps ✌ |
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| 28. |
Which physical quantity represents the rate of motion over the actual path? |
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Answer» physical quantity is a physical PROPERTY of a PHENOMENON, body, or substance, that can be QUANTIFIED by measurementacceleration is physical quantity which represents the rate of change of VELOCITY |
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| 29. |
Introduction of 2 law of motion |
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Answer» they are.. Any object will not CHANGE its star until and UNLESS an EXTERNAL force ACTS in it. every action have an equal and OPPOSITE reaction. |
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| 31. |
1. Two electrons each moving with a velocity o ms¹ are releasedtowards each other. What will be the closest distance of approachbetween them? |
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Answer» K.E=electrostatic potential at that MOMENT. 0.5*MASS of electron*((10)**6)**2 =9*(10)**9* CHARGE on electron/r. Now CALCULATE the value of r. Explanation:Hope this helps! Do not try to cheat the answer. Just UNDERSTAND the topic. |
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| 32. |
Time time10.A ball is thrown vertically upwards with a velocity of 45 ms 1 from the top of a multistorey building. The heightpoint from where the ball is thrown is 50m from the ground. Ball will hit the ground after time (take g = 10ms):(2) 8 sec(1) 5 sec(3) 10 sec(4) 12 sec |
| Answer» 5 SECONDS is the most ACCURATE time or 8 seconds because time is about 6.9 SEC | |
| 33. |
What is the equivalent resistance between A and B if each of the resistors are of 1ohm? |
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| 34. |
a cricketer Hits a ball with a velocity 25m/s at 60° above horizontal.how far above the ground it passes over a fielder 50m from the bat ? |
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Answer» ATE The HORIZONTAL velocity of the ball will be vcosø or 25cos60 this AMOUNT will be 12.5m/s ALONG X axis Then50/12.5=4seconds before the ball is thrown by the cricketer.The VERTICAL height will be H(4)=g/2(4)²+25sin60(4)=-4.9(16)+21.25(4)=8.2025m as height of the ball after 4secHOPE THIS HELPS YOUPLEASE FOLLOW ME ✌️MARK ME AS BRAINLIST |
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| 35. |
A body of mass 0.5kg is thrown thrown horizontally on a horizontal rough surface with a velocity 10m/s .calculate acceleration and the distance b/w them.. |
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Answer» tion:sorry VIDEO DIFFICULT what question I cannot know THANK you have a nice day |
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| 36. |
WHAT IS THE DIMENSIONAL FORMULA OF KINETIC ENERGY |
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Answer» Kinetic Energy = 1 / 2 × mv2Where , m = MASS of the object V = VELOCITY of the object .M1L2-T is the dimensional formula of kinetic energy .EXPLANATION:❤️❤️❤️Lucky❤️❤️❤️ |
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| 37. |
What is the formula to calculate depth of sea??? |
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Answer» Use the FOLLOWING FORMULA for measuring ocean depth. D = V Times 1/2 T D = Depth (in meters) T= TIME (in seconds) V = 1507 m/s (speed of sound in water) CALCULATE the depth foe each of the times given below, using the formula above. |
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| 38. |
Charge to mass ratio of electron class 11 definition |
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Answer» charge is to mass ratio or e/m raio or also CALLED as specific charge of electron is EQUAL to -1.758×10¹¹ C/kg or -1.758×10⁸ C/ghope it HELPED and PLS mark as brainliest:) |
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| 39. |
The bit rate of a signal, which has a sampling rate of 8 khz and where 16 quantization levels are used is : |
| Answer» TION:I cannot KNOW the ANSWER PLEASE THANK you our not this | |
| 40. |
The angle between two vectors minus two icap + 3 j cap + k cap and two icap + 2 j cap - 4 cap is |
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Answer» hhsjksjakakhahahsbvsvsjKoalajhsysusnsvh |
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| 41. |
The area of base of a cylindrical vessel is 300 cm^2. Water (density = 1000 kg/m^3) is poured into it up to a depth of 6 cm. Calculate the pressure and the thrust of water on the base (g = 10 m/s^2) |
| Answer» TION:static PRESSURE exerted by water is = density*depth*accln DUE to gravity= (1000*0.06*10) = 600 N/m^2thrust force = pressure*AREA = 600*300*0.000=18 newton | |
| 42. |
Table for electrical conductivity values of metals semiconductors insulator |
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Answer» just table for electrical conductivity VALUE of metal SEMICONDUCTOR INSULATOR I have HELPING to thank to me give |
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| 43. |
Steam enters an adiabatic turbine at 5 mpa, 650 °c, and 80 m/s and leaves at 50 kpa, 150 °c, and 140 m/s. If the power output of the turbine is 8 mw, determine: (a) the |
| Answer» TION:SORRY I cannot do the ANSWER THANK you our NIGHT | |
| 44. |
(C)Angle between A = 2 i + 2j & B = 3k is |
| Answer» TION:SORRY I cannot no ANSWER this PLEASE HELP me again | |
| 45. |
A speed of 90 km/h. The brakes are applied so as to produce a uniform 7. A train is travelling at a speed of 90 km/h. The brakes are applied so aacceleration of -0.5m/s. Find how far the train goes before it stops? |
| Answer» TION:U:90km/hr=90*5\18=25m/sA:-0.5m/sect:?S:? | |
| 46. |
How is it that an electric bulb lights up as soon as we turn the switch on? |
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Answer» Explanation:A SWITCH does the job of breaking the FLOW of electicity when it is off. While we switch it on ELECTRICITY starts FLOWING to the filament of the bulb which heats up. The heat energy is converted to light and the bulb starts GLOWING |
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| 47. |
Explain the principle construction in working of an AC generator with a neat diagram.... |
| Answer» TION:i HOPE you UNDERSTAND by this DIAGRAM | |
| 48. |
B.Specific energy of gasoline is greater than lead-acid battery. |
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Answer» -ionEnergy Density (Wh/kg) is a measure of how much ENERGY a BATTERY can hold. The HIGHER the energy density, the longer the runtime will be. Lithium-ion with COBALT cathodes offer the HIGHEST energy densities. |
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| 49. |
Speed of diamond is 125000 km/s what is its refractive index |
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Answer» :2.42Explanation: as REFRACTIVE INDEX of DIAMOND is FIXED . |
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