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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. |
Example of vibratory motion and why |
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Answer» Few examples of VIBRATORY MOTION: Movement of SIMPLE pendulum. ... Movement of vocal chords. Sound waves travels in the FORM of longitudinal waves which forms vibratory motion. Movement of string in stringed instruments like Guitar, sitar, etch |
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| 2. |
Answer and become brainliest |
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Answer» bdjdmdkxkj Explanation: hbxjjxkskakksjdififknybthf |
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| 3. |
Why we talk about temperature in ohm's low? |
Answer» OHMIC and non-ohmic conductorsOhmic and non-ohmic conductorsAs you have seen, there is a mention of constant temperature when we TALK about OHM's Law. This is because the resistance of some conductors CHANGES as their temperature changes. These types of conductors are called non-ohmic conductors, because they do not obey Ohm's Law.Jul 27, 2011 |
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| 4. |
2. A point transırrsed half a circle of radius r during a timeintervallo. Its nican speeland magnitude of mean velocity |
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Answer» Answer: Find your AIR and see where you stand in your exam prep. LEARN more× answr search What would you LIKE to ask? 11th Physics Motion in a Straight Line SPEED and Velocity A point traversed half a ci... PHYSICS avatar Asked on December 26, 2019 by Manya Rao A point traversed half a circle of radius r during a time interval t 0
its mean speed and MAGNITUDE of mean velocity are:
MEDIUM Share Study later ANSWER (C) time=t 0
distance=πr , displacement=2r mean speed= time distance
= t 0
πr
mean velocity= time displacement
= t 0
2r
Answer By avatar Toppr SHARE How satisfied are you with the answer? This will help us to improve better ASK Get Instant Solutions, 24x7 No Signup required girl More Questions by difficulty EASY MEDIUM HARD Prev Question Next Question Related Questions to study The position vector of particle changes from 10 m east to 20 m north in one second with respect to a fixed point. The magnitude of average velocity of the particle is: Study later View Answer A car is moving with speed v 0
as shown in the figure. The coefficient of friction between road and tyre of car is μ 3
Study later View Answer VIEW MORE Revise with Concepts Average Speed and Average Velocity EXAMPLE DEFINITIONS FORMULAES 20,000+ Learning videos 8,000+ Fun stories 10,000+ Fundamental concepts 8,00,000+ Homework Questions Learn with Videos Speed and Average Speed Speed and Average Speed 5 min Velocity and Average Velocity Velocity and Average Velocity 3 min VIEW MORE Quick summary with Stories Calculation of Speed and Average Speed 3 mins read Velocity and Average Velocity 2 mins read BROWSE BY ClassesBoardsExams MODULES Online ClassesMock TestsAdaptive PracticeLive Doubts Stay upto date with our Newsletter! Stay informed, stay ahead. Be a topper Your email address About Us Brand Resources Press Customer Stories Jobs Educators Fellowship Learning Planet Guides Ask Blog Bytes News Terms of Service Privacy Policy Contact Us FAQs Google Play App Store Feedback Not using Hotjar yet? Select an element on the page. |
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| 5. |
Two charges q1 and q2 are separated bya distance d. calculate the work done inincreasing the distance to 2d |
Answer» Given:Two charges q1 and Q2 are separated by a distance d. To find:Work done in increasing the distance upto 2d. Calculation:Initial POTENTIAL ENERGY between the two charges After changing the separation distance to 2d , new Potential Energy: So, work done will be equal to change in Potential Energy of the system: So, final answer is: [SINCE work done is negative, it signifies the fact that it the change in distance between the charged system will be spontaneous.] |
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| 6. |
What-is-a-vector-perpendicular-to-I-j-k |
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Answer» Answer: A vector perpendicular to a given vector is a vector (VOICED " -PERP") such that and. form a right angle. In the plane, there are two vectors perpendicular to any given vector, one rotated COUNTERCLOCKWISE and the other rotated clockwise. |
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| 7. |
Obtain a expression for a elctric potential due to a group of point charges,and also derive an expression for electric potential energy of the charged particle |
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Answer» Explanation: RECALL that the electric potential is defined as the potential ENERGY PER unit charge, i.e. V=PEq V = PE q . ... The equation for the electric potential due to a point charge is V=kQr V = KQ r , where k is a CONSTANT equal to 9.0×109 N⋅m2/C2. |
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| 8. |
The number of lines of that radiate outward from one coulomb of positive charge? |
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Answer» infenite Explanation: because a CHARGE can |
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| 9. |
Convert the following angle in Radian tutata 30 degree |
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Answer» Explanation: To convert from radians to DEGREES, MULTIPLY the radians by 180°π radians . |
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| 10. |
A body starts from rest and after 10second travelled 200mm,than what is the acceleration? |
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Answer» DOWNLOAD the ATTACHMENT for this USEFUL POST |
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| 11. |
A partical is moving with a uniform accerelation in a straight path. Its initial velocity is u displacement s and final velocity is v show that v-u =2as |
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Answer» don't know Explanation: |
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| 13. |
Find the weight of a body of mass one tonne |
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Answer» PAGAL is a GREAT EXAMPLE of the WORLD of the world of the world of the world |
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| 14. |
A train accelirate from 36 km / hr to 54 km /hr in 10 sec. then find the acceliration . please give answer with solution. |
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Answer» Explanation: FIRST convert both the speeds to m/s You will get 36km/h =10m/s 54km/h=15m/s We KNOW that Acceleration=Change in velocity /TIME =15m/s-10m/s/10s =0.5m/s² Hope it helps Mark as Brainliest |
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| 15. |
What is a blanced force |
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Answer» Explanation: A FORCE where two forces of equal size, act on a body, in opposing directions is known as a BALANCED Force. In Balanced Force, a body continues to be in its position i.e. it MAY be continuously MOVING with the same speed and in the same direction or it may be STILL in its position. |
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| 16. |
State one function of corenea in human eye |
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Answer» The cornea acts as the eye's outermost lens. It functions like a WINDOW that controls and focuses the entry of light into the eye. The cornea CONTRIBUTES between 65- 75 percent of the eye's total focusing power. When light strikes the cornea, it bends--or REFRACTS--the incoming light onto the lens. Explanation: follow me to GET more answer by me mark me brainliest if you can |
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| 17. |
WHAT IS FARADAY'S LAW? EXPLAIN.WHAT IS LENZ's LAW? EXPLAIN. ANSWER IT FAST |
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Answer» ★ First law : Whenever a conductor is placed in a MAGNETIC FIELD , an induced emf is produced in it ★ Second law : The rate of change of magnetic FLUX is directly proportional to the induced emf of the conductor ★ Lenz's law STATES that the direction of induced emf or current is such that it opposes the change in magnetic flux |
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| 18. |
Among wavelength, frequency ,speed, and amplitude which one changes when sound is reflected |
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Answer» Answer: The amplitude will change when sound is reflected from a surface Hope it HELPS MARK as BRAINLIEST |
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| 19. |
Which of the following can never be ZERO? Speed Distance All of theses Mass |
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Answer» ANSWER:- ɱαʂʂ _____________________❤️ |
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| 20. |
1. Force acting on a body can change its state of ................ and ................ . |
Answer» Force acting on a BODY can CHANGE its state of MOTION and change in its shape. |
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| 21. |
What mass of sodium hydroxide is dissolved in 500ml of solution so that the strength of |
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| 22. |
Two thin lenses are in contact and the focal length of the combination is 80 cm. If the focal length of one lens is 40 cm, then the power of the other lens will be(a) 1.66 D(b) 4.00 D(c) –100 D(d) –3.75 D |
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Answer» Answer: 300 Explanation: because it's hsjjsjs |
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| 23. |
Change of direction .................. |
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Answer» NOUN. 1. change of DIRECTION - the act of changing the direction in which something is oriented. reorientation. change - the action of changing something; "the change of GOVERNMENT had no impact on the economy"; "his change on abortion cost him the ELECTION" |
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| 24. |
Which similarity do you find in their cofiguration |
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Answer» Electronic configuration of Potassium : From the above electronic configurations, we can say that the number of VALENCE ELECTRONS of all the elements are same which is 1. Valence electrons are defined as the number of electrons which are present in the outermost shell. |
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| 25. |
Two of 4 ohm and 6ohm are connected with 6 volt battery find a) current through the bacteryb) current through each resistorc) drowning the circuit diagram |
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| 26. |
Find the odd one out Polished metals,mirrors,tiles,coir mat |
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| 27. |
The momentum of a body of mass 2 kg moving with 20 m/sec in a uniform circular motion is |
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Answer» Answer: 40 P=mv so, p=2kg ×20m/sec p=40kgm/sec |
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| 28. |
A resistance of potentiometer wire is 8 ohm and it's length is 8 m . A resistance box and a 2v battery are connected in series with it. What should be the resistance in box if it desire have a potential drop of micro volume / mm |
Answer» Hello FRIEND,here is your answer ;-SOLUTION : We have by OHM's law I=εR=120R But I=Kθ by THEORY of galvanometer, When I=10−6A,θ=1,∴K=10−6 ∴10−6θ=120R or R=120×10640=3mΩ Putting θ=0,5,10,15,20,25,30,35,40 we have the entire scals as ∞ 24,12,8,6,4,8,4,3.43 and 3mΩ's |
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| 29. |
A particle moves in a circular path of radius 10 cm with constant speed of 10 cm/s. Its acceleration is |
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Answer» radius =10cm=10/100=0.1m SPEED=10cm/s=o.1m/s Since the particle is moving in a circular path of radius 10 cm, with a constant speed of 10 cm/s, the acceleration it is experiencing is the centripetal acceleration of magnitude | a | = v²/R, where v= 10 cm/s, is the constant speed in the circular path, and r is the radius of the path. | a |= 10²( cm²/s²)/ 10 (cm/s)= 10 cm/s². The acceleration has a magnitude of 10 cm/s² directed from the particle to the centre of the circular path. |
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| 30. |
Region of solar radiation, having comparatively low energy, is called |
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Answer» Answer: Region of solar radiation, having comparatively low energy, is called visible MARK me as BRAINLIEST and PLEASE follow me and SUBSCRIBE to my YOUTUBE channel abiraj 718 |
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| 31. |
State the types of motion of the follow(a) The needle of a sewing machine pe |
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Answer» Answer: In sewing MACHINE the WHEEL EXHIBITS rotational MOTION, the needle executes OSCILLATORY motion and the cloth exhibits translation motion. Please mark me as brainliest! |
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| 32. |
What information do you get from a balanced chemical equation? |
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Answer» Explanation: A BALANCED Chemical equation tells us about the no. of atoms present on each side. It ALSO helps us to verify the law of conservation of mass. It GIVES us the IDEA about number of moles as well. |
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| 33. |
A body moving with an initial velocity of 20m/s undergoes a uniform acceleration of 10 m/s' for 5sIt then undergoes a uniform retardation and comes to rest in 3s. Draw the velocity – time graph andfrom it determine(1) The distance travelled during acceleration.(ii) The total distance travelled.(iii) The uniform retardation, |
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Answer» Answer: I can't UNDERSTAND ANYTHING pls can U explain me and I will my best so that it will be HELPFUL for me and u toooo.. |
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| 34. |
5. Magnetic force is a ...............force. |
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Answer» Magnetic force, ATTRACTION or repulsion that ARISES between ELECTRICALLY charged particles because of their motion. ... The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other. follow me inbox me thanks me for my answer Mark my answer as the BRAINLIEST |
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| 35. |
In an experiment, the values of car anarefocend to be9.21, 9.15, 9.29, 9.09, 9.23in succesive measurements in (m)calculate 1) True value/mean value 2) Percentage errar, |
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Answer» Answer: You can simply request for an evaluation through the website or mobile app, and we shall get in touch with you. You can also visit a MARUTI SUZUKI TRUE Value DEALER in your city for the same purpose. |
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| 36. |
A stone of mass 2 kg is thrown with a velocity 5 m/s across the frozen surface of a lake and comesto rest after travelling a distance of 25 m. what is the force of friction between the stone and ice? |
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Answer» Answer: FORCE OF FRICTION = -4N Explanation: INITIAL VELOCITY of the stone, u= 20 m/s Final velocity of the stone, v= 0 Distance covered by the stone, s= 50 m We know the third equation of motion v²=u²+2as Substituting the known values in the above equation we get, 0² = (20)²+2(a)(50) -400 = 100a a = -400/100 = -4m/s² (retardation) We know that F = m×a Substituting above obtained value of a=-4 in F= m x awe get, F = 1×(-4) = -4N (Here the NEGATIVE sign indicates the OPPOSING force which is Friction) |
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| 37. |
Magnetic force is aforce.. |
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Answer» PLEASE mark as BRAINLIEST. Explanation: |
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| 38. |
Write the rules for sing conventions? |
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Answer» Sign CONVENTION - definition |
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| 39. |
3. CGS unit of force is ... |
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Answer» Answer: The cgs unit for force COMES from the same equation and is called the dyne, or DYN. 1 dyn = 1 g·cm/s2. DYNES are a lot SMALLER than Newtons: 105 dyn = 1 N. |
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| 40. |
Equations of motion |
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Answer» Equations Of MOTION:- • • • ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Additional Informationu = initial velocity v = final velocity a = acceleration t = time s = displacement or distance g = acceleration due to gravity ____________________________ Some examples ➣ If initial velocity is 0 Then, v = u + at v = 0 + at v = at v = GT ____________________________ If initial velocity is ZERO in this case. Then.. _____________________________ If initially the body is at rest in this case... ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Initial velocity is zero means the body is initially at rest. |
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| 41. |
A light of frequency 1.66 x 10's is being projected on different metals. In whichof the following metal there would be emission of electron (h = 6x10 "S')(1) Metal AC = 0.7eV)(2) Metal B(°. = 1.2eV)(3) MetalC(=0.8eV)(4) Metal D(0 = 0.5eV)RESPONSE AREA |
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Answer» OK I WILL SEND YOU AFTER WRITING OK OK Explanation: OK I WILL SEND YOU AFTER WRITING OK OK .... |
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| 42. |
Distinguish between real and virtual images. |
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Answer» The IMAGE FORMED when rays of light meet at a point after reflection/refraction is called real image. The image formed when rays of light APPEAR to meet (when DIVERGING rays are extended) at a point is called a virtual image. |
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| 44. |
a circuit when connected to AC source of 12 volt give a current of .2 ampere the same circuit when connected to DC source of 12 volt gives a current of .4 ampere the circuit is |
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Answer» Answer: When the circuit is CONNECTED to an AC SOURCE of 12 V, it gives a current of 0.2 A. When the same circuit is connected to DC source of 12 V, the current obtained is 0.4 A. ... Therefore the given circuit is a series LR circuit. |
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| 45. |
What is the unit of force and is ma the unit of force what is th answer to ngive me |
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Answer» SI Unit of FORCE = Newtons or kgm/s2 Mass SI Unit = kg Acceleration = m/s^2 Dimensional FORMULA of Force = |
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| 46. |
a particle in equilibrium under the action of three vectors acting simultaneously . prove : vectorA× vectorB=vectorB×vectorC=vector C×VectorA |
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Answer» Answer: body is in equilibrium under the ACTION of three force vectors A ,B and C SIMULTANEOUSLY Show that A ×B =B ×C =C ×A. MEDIUM ... |
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| 47. |
A wire of length 1.43 m has a resistance 27Omega The wire is stretched to three times its original length keeping its volume constant. If a length 1.43 m is now cut from the stretched wire, then the resistance (in * Omega) of this piece that was cut off is: |
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Answer» hssiwkrgbekems bslwlwvvfklwi owowwkeo woeoe Explanation: iejrhrjejoriwxxwigigv2wjspfi22vdog2kfiowijehrieojrbbr |
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| 48. |
The ratio of potential difference across a conductor to current flowing through it * 1 point a) Electric current b) voltage c) charge d) Resistance |
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| 49. |
State the relationship between ‘g’ and ‘G’. |
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Answer» Explanation: • g is the acceleration due to gravity any massive body MEASURED in m/s?. of • G is the UNIVERSAL GRAVITATIONAL constant measured in Nm2/kg². • Ris the radius of the massive body measured in KM. • M is the mass of the massive body measured in KG |
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| 50. |
Principal =rate 3000 rate, =5 per annum, time =2 years question solve |
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Answer» Principal-3000 Time-2years formula-PTR/100 3000*5*2/100--300 SI-300, P-3000, R-5, T-2years |
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