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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. |
A charge of 6 µC is located in a uniform electric field of 2.9 N/C. Calculate the force experienced by thecharge. |
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Answer» Explanation: B UNIT ER PRESSURE inside the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the meeting on the the no problem yghjjg the meeting on the meeting on the meeting on the meeting |
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| 2. |
. Write any five uses of spherical lens. |
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Answer» Answer: used in MICROSCOPE used in TELESCOPES used in mirror used in specs used in TORCH light Mark me as BRAINLIEST |
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| 3. |
Determine the electrical force of attraction between two balloons that are charged with theopposite type of charge but the same quantity of charge. The charge on the balloons is 6.0 x 10-7 C. Makeassumptions wherever necessary. |
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Answer» I HOPE IT WILL HELP YOU. Step 1: Identify KNOWN values in variable form. Q1 = +6.0 x 10-7 C and Q2 = -6.0 x 10-7 C d = 0.50 m Step 2: Identify the requested value F = ??? Step 3: Substitute and solve |
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| 4. |
A proton travels in the positive X direction at constant speed v. It enters a region of uniformelectrical field of magnitude E pointing in the positive Y direction (perpendicular to theproton's original motion). From the moment the proton enters the region of electric field, it isdisplaced a distance L in the positive y direction in the time that it travels a distance d in thepositive X direction.How muchwould the proton have been displaced in the positive y direction if the magnitudeof the electric field had been twice as big?(2 Points) |
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Answer» HMM.... INTERESTING.... |
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| 5. |
10. An object is placed 15 cm in front of a lens 'A' and lens gives real, inverted,Magnified image and formed at large distance. Lens 'A' is replaced by Lens 'B' and a real, inverted image of the same size as of object is formed.i) What is the nature of Lens A&B?ii) What is the focal length of A&B? |
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Answer» Everything is FINE |
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| 6. |
The dielectric constant of water is 80. What is its permittivity? |
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Answer» Answer: It can be MEASURED by using the formula. The permittivity of free space is the capability of a VACUUM to PERMIT the ELECTRIC fields and mostly used in electromagnetism. THEREFORE, the required answer is – When the dielectric constant of water is 80, then its permittivity will be ε=708.32×10−12F/m. |
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| 8. |
Find the current in 3ohm resistor using Kirchhoff's laws |
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Answer» Kitchhoffff LAWS what is it? |
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| 9. |
In a hydraulic machine, a force of 4N is applied to the piston of the area 2pof cross-section 10 square centimetre. The force applied on its piston ofthe area of cross-section 100 square centimetre is20 n30 nor 40 n |
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Answer» Answer: We KNOW that, PRESSURE= Force/Area ⇒Pressure= 2/10 = 0.2 cm^-2 =0.2Ncm ^−2 Now, Pressure=0.2 Again, Force=Pressure×Area Force=0.2×100=20N Hence your answer is 20 N |
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| 10. |
(i) A charge of 6 µC is located in a uniform electric field of 2.9 N/C. Calculate the force experienced by thecharge. |
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Answer» INTERESTING........ |
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| 11. |
How does the angle of deviation depend on therefracting angle of the prism? |
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Answer» Can you imagine a world without merchants, where we are left to our own devices to acquire GOODS and services without middlemen? Sounds LIKE a harsh PLACE to be. The sale and trade of goods defines MUCH of the DEVELOPMENT and history of the world.
Please mark me as Brainlist. |
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| 12. |
An electric lamp is marked 100W, 220 V. It is used for 4 hrs daily. Calculate: (i) current passing through it (ii) Bill generated for a week if each unit is rated at Rs.4 (show the steps too) |
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Answer» Answer: Electric LAMP, Power = 100W Potential Difference = 220V ∴ Power = Potential Difference*Current = 100 = 220*Current = 0.45 A = Current Unit consumed for a DAY = (wattage*hours)/1000 = (100*4)/1000 kWh = 0.4 kWh Unit consumed for a WEEK = (0.4*7) kWh = 2.8 kWh If 1 kWh is rated Rs. 4, 2.8 kWh will be rated as = Rs. (2.8*4) = Rs. 11.2 Hope this helps. |
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| 13. |
30.A body floats in a liquid A of density d1 with a part of it submergedinside liquid while in liquid B of density d2 totally submerged inside theliquid. The densities d1 and d2 are related asa. d1 =d2 b.d1 is greater than d2 c.d1 is lesser than d2 |
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Answer» According to ARCHIMEDES principle. A body floats if the DENSITY of the body is LESS than the density of the fluid. if the density of body is greater than that of fluid, it will sink. So, in the above case, CASE 1: It is partially SUBMERGED - density of liquid is greater than body. CASE 2: It is fully Submerged - density of liquid is less than the body. So, from above we can conclude that First liquid has a higher density than than the SECOND liquid. |
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| 14. |
Write in details about wave's group velocity and group velocity ? |
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Answer» WAVES can be in the group and such groups are called wave packets, so the velocity with a wave packet travels is called group velocity. The velocity with which the phase of a wave travels is called phase velocity. Explanation: |
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| 15. |
When can we say that the resultant of the two vectors is maximumWhen the vectors are acting in the opposite directionBoth the vectors are acting in the same directionWhen the vectors are at right anglesWhen the vectors are parallel to each other |
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Answer» Answer: . R is maximum when Cos ( A, B) = +1 ie ANGLE between vectors A and B is ZERO ie vectors A and B are parallel to each other. The RESULTANT of two VECTOR is minimum when both vectors are equal and in opposite direction i.e. the angle between the vector is 180 degrees. |
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| 16. |
Send all the formulas and symbols and sign of ch 3 gravitation class 9th NCERT |
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Answer» Answer: F=GMm/d^2 g=GM/R^2 F=mg F=ma W=mg W=ma Wm/We=1/6 Pressure = Thrust / Area Relative density = Density of a substance / Density of water F-force G=6.673*10^-11 Nm^2 kg^-2 g-acceleration = 9.8 ms^-2 M-mass of ONE object m-mass of SECOND object R-radius of earth W=F= Force applied on body We - Weight of OBJECTS on earth Wm - Weight of objects on MOON |
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| 17. |
Write the eletronic configration of sodium and chlorine .Mention thrir valency |
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Answer» Electronic configuration of SODIUM(NA) = 2, 8, 1 Electronic configuration of Chlorine (Cl) = 2,8,7 Valency of both Na and Cl is 1. Hope it helps u!! Mark me as brainliest... |
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| 18. |
3. Laboratory thermometer is 1 pointused to measure temperatureof human body as well as inscience laboratoryO TrueO False |
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Answer» ANSWER:no MEDICAL THERMOMETER is used to MESURE body tempture as there is a kink in it |
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| 19. |
Why will a sheet of paper fall slower than one that is crumple |
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Answer» Answer: A SHEET of paper falls slower then the ONE CRUMPLED into a ball because the surface AREA of the ball is much lower than that of the sheet. Thus the upward force exerted by air on the sheet is much as COMPARED to the one exerted on the ball. Hence the sheet falls slower. Explanation: follow me like my answer |
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| 20. |
In an Ac circuit EMF applied is e=5sin due to which a current I=3 cos flows in circuit. Find the average power (P) dissipated in the circuit |
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Answer» ok Explanation: MARK me as BRAINLIEST SIS..... |
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| 21. |
Show the direction of magnetic compass needle in following diagram: |
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Answer» Explanation: It is the collective responsibility of the government and the PEOPLE of India to keep the beautiful DIVERSITY of our nation BOUND in the cord of unity intact. Let's preserve the diversity of our unique country by upholding unity among its DIFFERENT CULTURES, languages, faiths, customs, and traditions. |
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| 22. |
The no. of degrees of freedom for a diatomic gas molecule is(a) 2 (b) 3(c) 5 (d) 6 which is correct option ?? |
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| 23. |
What is quantum mechanics i m in exam dont say wrong |
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Answer» Answer: Quantum mechanics is a fundamental theory in physics that provides a DESCRIPTION of the physical properties of nature at the scale of atoms and SUBATOMIC particles. It is the FOUNDATION of all quantum physics INCLUDING quantum chemistry, quantum field theory, quantum technology, and quantum information science. Explanation: Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. give me branliest pls |
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| 24. |
We get a virtual image in a concave when the object is placed |
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Answer» A CONVERGING lens (ONE that is THICKER in the middle than at the edges) or a concave mirror is also capable of producing a virtual image if the object is within the FOCAL length. ... In contrast, an object placed in front of a converging lens or concave mirror at a position beyond the focal length PRODUCES a real image. |
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| 25. |
1 point5. The degree of hotness orcoldness of a body is called :timeΟ Ο ΟO temperaturemass |
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Answer» the DEGREE of hotness and COLDNESS of a BODY is CALLED temperature |
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| 26. |
What are all the activity series |
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Answer» Answer: ▪︎In chemistry, a reactivity series is an EMPIRICAL, calculated, and structurally analytical PROGRESSION of a series of METALS, arranged by their "reactivity" from highest to lowest. Explanation: ▪︎The reactivity series is a series of metals, in order of reactivity from highest to lowest. It is used to determine the products of single displacement reactions, whereby METAL A will replace another metal B in a solution if A is higher in the series. |
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| 27. |
Difference between rafraction and reflection |
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Answer» Answer: Reflection When a ray of light COMES back into the same medium after striking the surface of ANOTHER medium then the PHENOMENON is called reflection of light. In other words, reflection is the BOUNCING back of the light rays from a surface in the same medium. Refraction The change of direction and speed of light as it enters from one medium to another is termed as the refraction of light. Examples of refraction are lenses, prism, telescope. |
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| 28. |
4. A body of mass 2 kg which is at rest is givenan impulse of 10 N.s. Following the impulse,the body has a(a) speed of 20 m/s(b) speed of 10 m/s(c) momentum of 20 kg.m/s(d) momentum of 10 kg.m/s. |
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Answer» c Explanation: i dont know bro PLZ marke me as brainliest answer |
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| 29. |
Consider an NMOS differential pair with vG2 = 0 and vG1 = vid. Let VDD = VSS= 1.0 V, kn’ = 0.4 mA/V2, (W/L)1,2 = 10; Vt = 0.4 V, I = 0.16 mA, RD = 5 kΩ and neglect channel-length modulation. Find the value of vid that corresponds to each of the following situations:(i) iD1 = iD2 = 0.08 mA;(ii) iD1= 0.04 mA and iD2 = 0.12 mA; (iii) iD1= 0 mA (Q1 just cuts off) and iD2 = 0.16 mA. For each case, find vS , vD1, vD2, and (vD2 – vD1). |
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Answer» ★ Find the PERIMETER of a rectangle if its length is 15m and one of the diagonals is 17 m Cuba Norway South Korea the United STATES
South Korea The two major disadvantages of wind power include initial cost and technology immaturity. Firstly, constructing TURBINES and wind facilities is extremely expensive. The second disadvantage is technology immaturity. |
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| 30. |
a body is projected vertically upwards with velocity u crosses. it crosses point in its journey at a height h twice just after 1 and 7 second the value |
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Answer» h=ut− 2 1
gt 2
h=u(1)− 2 1
G=u− 2 g
.....(1) h=u(7)− 2 1
g(7) 2 =7u− 2 49g
.....(2) EQUATING (1) & (2) u− 2 g
=7u− 2 49g
24g=6u u=4g ⇒u=40 m/s |
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| 31. |
What physical quantity is meassured in tor ? how is it related to the si unit of the quantity |
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Answer» Answer: Torr is unit to MEASURE pressure of ATMOSPHERE its NAME after SCIENTIST torricelli and is based on ABSOLUTE scale si unit of pressure is pascal |
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| 32. |
Rest onA box ofЧkinclined planetinclinationto the horizontal gradually increaso ploblock slide downwhen slope of ptake33영02 A Àto bode paranceplane so thatРبل3(1) Findfore applicahcopicient ogbox move up |
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Answer» I want to do sex and touch you and you are to HOT you do this then I will FOLLOW you |
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| 33. |
The displacement of the particle moving in a straight line is given by expression x=At^3+Bt^2+Ct+D in meters, where t is in seconds and A,B,C, and D are constants. The ratio between initial acceleration and initial velocity is. |
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Answer» KINDLY CHECK the ATTACHMENT.. HOPE this HELPS.. |
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| 34. |
When a body is moved on the ground byapplying force, then work is done against |
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Answer» Answer: please WRITE the FULL questions can't UNDERSTAND |
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| 35. |
17.5m = x3aoky3oky20k410 mand the distance how my travelled by the plankbyreaches at the ccenteof the plankgirl reaches at the other end ofthe plankwhen boyand thed |
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Answer» Can you imagine a world without merchants, where we are left to our own DEVICES to acquire GOODS and services without middlemen? Sounds like a harsh place to be. The sale and trade of goods defines much of the development and HISTORY of the world.
Please MARK me as Brainlist. |
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| 36. |
A spherical mirror produces an image of magnification -1 on a screen placed at a distance of50 cm from the mirror. State the nature of the mirror. |
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| 37. |
A steam of water flowing horizontallywith a speed of 25ms' gushes out of atube of cross-sectional area 103 m²,and hits at a vertical wall nearby. Whatis the force exerted on the wall by theimpact of water? |
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Answer» DATA: a=25ms-2 F=ma F=2575 |
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| 38. |
Name the physical quantity whose S.I.unit is J/C. -1M(a) Electric current (b) Electric potential (c ) electric charge (d)Electric force |
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Answer» (B) ELECTRIC potential is the answer. Mark me BRAINLIEST if my answer helps you. Explanation: |
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| 39. |
Write a relation for the angle of deviation for aray of light passing through an equilateral prism interms of the angle of incidence (ii), angle ofemergence (i) and angle of prism (A). |
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Answer» Answer: are you an army if yes mark me as brainliest as I am army and BLINK but more blink. Explanation: now for the question (i)dont know,(II)49* THANKS, but mark as brainliest |
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| 40. |
Calculate the speed if a car is travelling 40m in 6 seconds. |
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Answer» Answer: 6.6666... Explanation: SPEED = Distance / Time Distance = 40m time = 6 sec Speed = 40/6 |
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| 41. |
7. What mass of steam initially at 130°C is needed to warm 200 g of water in a 100-gglass container from 20.0°C to 50.0°C? Specific heat of container is 837J/K9°CSpecific heat of steam is 2110J/Kg CSpecific heat of water is 4186J/K9°CLatent heat of vapourisation is 2.26 10 J/Kga. 16.9 gb. 14.9 gc. 10.9 gd. 12.9 g |
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Answer» HEAT lost by steam = heat GAINED by water + heat gained by CONTAINER m(s).L +m(s).c(s).(130–100) = m(w). c(w). 30 + m(c).c(c).30 You can look up L for steam, c(s), c(w) and when you know the container material, you can look up c(c) as WELL. |
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| 42. |
Method of section.GooNBsoon400ND36060K 6060NoGoLocmRAlocm9determine the member forces in BD, CD and ceusing |
Answer» ꜰɪɴᴀʟʟʏ ꜱʜᴇ ᴡᴏʀᴋᴇᴅ ᴜᴘ ᴛʜᴇ ᴄᴏᴜʀᴀɢᴇ ᴀɴᴅ ᴛᴜʀɴᴇᴅ ᴏɴ ᴛʜᴇ ᴄᴏᴍᴘᴜᴛᴇʀ.Please WRITE the QUESTION PROPERLY |
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| 43. |
Work is said to be done when force produces |
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Answer» Answer: Work can be done when a force produces a MOTION. For e.g. when a PERSON climbs the stairs of an office or a house, work is said to be done as he is MOVING against the force of gravity. (ii) DISTANCE through which the body moves in the direction of force. |
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| 44. |
Q. What is the SI units of [G/g] ? |
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Answer» Answer: In SI UNITS, G has the value 6.67 × 10-11 Newtons kg-2 m2. Explanation: The direction of the force is in a straight line between the two bodies and is attractive. Thus, an apple FALLS from a TREE because it FEELS the gravitational force of the Earth and is THEREFORE subject to “gravity”. |
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| 45. |
हमें स्थानीय सरकारों की आवश्यकता क्यों है ? |
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Answer» ................ . ....... ....m |
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| 46. |
Answer step by step. Find the speed of an object which travels 56metres in 9 seconds |
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Answer» Answer: 6.2 m/s Speed = Distance /time. Distance = 56 m. Speed= 56/9. =6.2 m/s. HOPE this is helpful. If correct mark me as BRAINLIEST. |
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| 47. |
What do you mean by impulsive force how will you calculate its and its unit |
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Answer» Answer: Impulse is an important concept in the study of momentum. ... An impulse is equal to the NET force on the object times the time PERIOD over which this force is APPLIED. Below, we derive impulse from the EQUATION F = ma, which comes from Newton's second law of motion. Hey! PLZZ Follow. & Mark Me Brilliant |
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| 48. |
At a definite temperature and pressure, a gas is filled in a cylinder fitted with a piston. Explain on the basis of kinetic theory, the pressure of the gas increases when its temperature is raised. |
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Answer» Answer: at a definitely a TEMPLE of purchase a girl's principal CYLINDERS as the with person explanation basic for the GRACE if it is the temporal East |
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| 49. |
What are speed of sound in different media ? |
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Answer» In any medium, if the temperature increases, the SPEED of SOUND also increases and vice versa. For example, the speed of sound in air at 00C is 331 m s–1 and at 220C it is 344 m s–1. ... Explanation: follow me like my answer |
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| 50. |
Examples of negative scientific notation with the numbers |
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Answer» Answer: A number in scientific NOTATION will have a NEGATIVE exponent when it is less than 1. Step-by-step explanation: To find : A number in scientific notation will have a ____ exponent when it is less than 1 ? Solution : In scientific notation, the coefficient is always a number greater than or equal to ONE and less than ten.The exponent is an integer. When writing NUMBERS greater than ten in scientific notation: 1) The exponent is positive and equals the number of places the original decimal point has been moved to the left. 2) A negative exponent when written in scientific notation. The value of the exponent equals the number of places the decimal has been moved to the right. Therefore, A number in scientific notation will have a negative exponent when it is less than 1 |
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