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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. |
Calculate the specific binding energy of 2 He4Given : Mass of proton = 1.0073u. Mass of neutron=1.0087u. Mass of electron =0.00055u Mass of helium nucleus=4.0041u. |
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Answer» mark me BRAINLIST answer |
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| 2. |
Plzz follow me I will help you in answering your questions |
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Answer» nooooooooooooooooooooooooooooooooooooooooooo |
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| 3. |
What is the direction of acceleration due to gravity? |
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Answer» ACCELERATION is gravity which is always DOWNWARD (NEGATIVE). |
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| 4. |
In the two curves drawn between frictionalforce f and applied force F for 2 bodies onground. Then correct statement is :-fa40N20 NLe,→F►F(A)(B)2(1) , >(2) Coefficient of static friction may be more for (B)(3) Coefficient of kinetic friction is same ascoefficient of static friction for both(A) & (B)(1) Coefficient of |
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| 5. |
Show that the vectors A = 2i + 5j – 3k and B = 4i + 10 j – 6 k are parallel. |
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Answer» Explanation: 2/4=5/10=-3/-6 1/2=1/2=1/3 A VECTOR is ai+bj+ck and B vector is xi+yj+zk , and if they are PARALLEL , a/x=b/y=c/z and if they are PERPENDICULAR , ax+by+cz=0 |
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| 6. |
Explain how torque can be expressed as a vector product of two vector how is the direction of torque determined? |
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Answer» guidgfcgzsdddrttdfftyydds Explanation: xggztfssytsifu |
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| 7. |
Write the conditionof minima of the function yo y=f(x) |
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Answer» write the condition |
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| 8. |
A. Fill in the blank spaces :(i) In case of a lever of third order, the effortarm is alwaysthan the loadarm.(longer/shorter)(ii) The non-movable parts of a machineshould beto prevent rusting.(oiled/painted(iii) A single fixed pulley can changeof effort.(direction/magnitude)(iv) A winding stair case is an example of(wedge/screw)(v) Dust free airthe life span of amachine.(increase/decrease)PLEASE JUST DON'T WRITE ANYTJING TO GET POINTS |
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Answer» Answer: 1. longer 2. painted 3. directions 4. wedge 5. increase |
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| 9. |
State the approximate location of Earth's magnetic North Pole |
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Answer» Based on data released by the National Centers for Environmental Information in February 2019, the magnetic NORTH pole is located at 86.54 N 170.88 E, WITHIN the ARCTIC Ocean and HEADING from Canada toward Siberia Explanation: |
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| 10. |
Please give me the solution. |
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Answer» Answer: B(5) |
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| 11. |
Figures (1) and (2) show the speed-time graphs of two cars (a) and (b); respectively. Using these graphs answer the following questions: 1234 Time h Fig (2) Fig (1) i. What is the acceleration of the car (a) and car (b) in the first two hours, in the next two hours and in the last two hours? What is the total distance travelled by the two cars? ii. iii. What is the average speed of the two cars? pls ans fast! its an emergency |
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| 12. |
A body is projected upward with a velocity, which comes back to the same point aftersome time. Draw the following graphs related to its motion.(a) speed – time graph(b) velocity – time graph |
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Answer» ♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡ THANKS FREE POINTS ▪︎▪︎▪︎▪︎▪︎▪︎▪︎▪︎▪︎▪︎¤▪︎¤▪︎¤▪︎▪︎▪︎¤¤¤¤☆》☆》☆》☆》》☆》☆》☆》 MARK AS ME BRAINLIST |
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| 13. |
Write the name of the town from where the word magnet originated. |
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Answer» ........................ |
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| 14. |
A pendulum oscillates 80 times in 5 seconds. Calculate its time-period and frequency. |
Answer» 0.062s ; 16.12HzExplanation: Here is your answer if U GET the CONCEPT than mark this as a BRAINLIEST. |
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| 15. |
A rocket is fired vertically up from the ground with acceleration 10 m/s. If its fuel is finishedminute then calculate(a) Maximum velocity attained by rocket?(b) Height attained by rocket before lue is finished(c)How much time is taken by the rocket in the whole motion ?(b) Maximum height attained by rocket? |
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| 16. |
Due to corona virus pandemic life has come to a standstill in this scenario you feel quiet perturbed and depressied how would you overcome this ? |
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Answer» There are many THINGS you can do—even in the face of this unique crisis—to manage your anxiety and fears. Stay informed—but don't obsessively check the news. It's vital to stay informed, particularly about what's happening in your community, so you can follow advised safety precautions and do your part. |
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| 17. |
Why is the front edge of the boat shaped like a wedge? |
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Answer» can't UNDERSTAND the QUESTION |
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| 18. |
Write the rule of find significant figure |
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Answer» Answer: To determine the NUMBER of SIGNIFICANT figures in a number use the following 3 rules: Non-ZERO digits are ALWAYS significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the DECIMAL portion ONLY are significant. |
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| 19. |
The gravitational and initial masses of a body area) exactly equalb) nearly equalc) unrelatedd) unequal |
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Answer» B) nearly equal Hope it helps! Please MARK me as Brainliest |
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| 20. |
draw 3 magnetic field lines of magnet placed with its north pole in geographical north direction and mark the position of neutral points of P and Q in the diagram.what is the resultant magnetic field at the neutral point? |
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Answer» HOPE you will APPRECIATE |
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| 21. |
If today is Wednesday then after 91 days it will be |
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Answer» Wednesday Explanation: |
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| 22. |
A 5 kg rifle fires a bullet with speed of 500 ms-1. Findthe ratio of the distance the rifle move backward while thebullet is in the barrel to the distance the bullet movesforward?(1) 1/600(2) 1/666(3) 2/327(4) None of the above |
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Answer» I have some DOUBT |
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| 23. |
Who found rotator vehicle ? |
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Answer» Answer: The wrecker (with lifting jib) was invented in 1916 by Ernest Holmes Sr. of Chattanooga, Tennessee, a garage worker who was inspired after he needed blocks, ropes, and SIX men to pull a car out of a creek. Explanation: Mark me brainlist and get your HALF points back |
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| 24. |
34. How ammeter and voltmeter should be connected in electric circuit? What is the use ofthese instruments, in the circuit? |
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Answer» इंसुलिन एक प्रकार का हार्मोन ... के बीच रखने की सलाह दी जाती है। ... लेने पर भी शुगर लेवल कम नहीं ... |
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| 25. |
three 2 ohm resistor A,B and C are connected with a source of 6v calculate the total resistance and current in the circuit |
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Answer» Answer: bro LIKE this U will not get answer ask the same QUESTION 2-3 TIMES it will helpfull
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| 26. |
9Which material is used tomake heating element?| ஹீட்டிங் எலமென்ட்எந்த பொருளால்உருவாக்கப்படுகிறது?Silver | சில்வர்Copper | காப்பர்Nichrome | நைக்ரோம்Aluminium | அலுமினியம் |
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| 27. |
A stone starts falling freely under the gravity. The time taken by the stone to fall through the initial height h is 4s. The further time taken to fallthrough height 2h will be closest toA. 3sB. 5sC.1 sD. 6s. |
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| 28. |
Complete the diagram in your answer book and write the nature of the image formed. |
Answer» PLEASE FOLLOW me on BRAINLY |
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| 29. |
Al-D8) The decreasing order of diffusion in substances,(a) Solid > liquid > gas(b) Gas > liquid » solid(c) liquid > gas > solid(d) liquid > solid > gasTIPS |
Answer» (B) Gas > liquid > solid
➡️ That's the decreasing ORDER of of diffusion in substance that is from most easily e diffusible substance to the LEAST one. Additional points
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| 30. |
Where does the centre of mass of thin rod lies? |
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Answer» dndiebfjejejjctct tvtvtgtgtftffff |
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| 31. |
12. State the laws of reflection. |
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Answer»
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| 32. |
calculate the average power dissipated due to the resistance of wire over (a) 10cm of wire and, (b) over 90 cm of wire . the thickness of wire = 0.63 mm |
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Answer» Answer: 100 cm÷0.63=1.63 cm |
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| 33. |
how does the resistivity of alloy compare with those of pure metal from which they may have been formed ? |
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Answer» Answer: but FIRST follow me |
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| 34. |
Velocity is the physical qantity give reason |
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Answer» Answer: A PHYSICAL quantity is a property of a material or system that can be quantified by measurement. velocity TELLS us about both magnitude of speed and a PARTICULAR DIRECTION. hence, it is also considered a vector quantity Explanation: Pls Mark as brainest answer and follow me pls |
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| 35. |
State Ampers’s circuital law and prove this law for a circular path around a longcurrent carrying conductor. |
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Answer» ffuyyfhydyyfuhduhfjhf |
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| 36. |
Draw a circuit diagram showing three resistors in series with an ammeter, a cell and a switch. Draw one voltmeter connected across the first resistor and a second voltmeter connected across the terminals of the battery |
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Answer» Explanation: Here the circuit in which a resistor of resistance 4Ω is attached in series and two resistors of resistance 8Ω are attached in PARALLEL. Also, Ammeter and voltmeter attached in the circuit in series and parallel respectively. Now, MAXIMUM power of each resistor is 16W 4Ω resistor is joined in series with circuit . so, Power=i 2 R , here i is current through resistor of resistance R 16=i 2 ∗4Ω i = 2A Now, 2A is passing through parallel resistors of resistance 8Ω. we KNOW, in parallel potential difference be constant so, current divides two part , due to same resistance current on each resistance will be half . so, current passing through each parallel resistor is 2A 2
=1A So, FINALLY current through 4Ω resistor =2A current through each 8Ω resistor =1A |
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| 38. |
What happens when there is no friction in this world |
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Answer» no WORLD Explanation: |
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| 39. |
Derive an expression of magnitude and direction of resultant force acting at a point with an acute angle between them |
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Answer» thanks PLZ |
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| 40. |
Two electric charges of +10^-9 and -10^-9 are placed at the corners a and b of an equilateral triangle abc side |
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Answer» Two CHARGES of 4µC each are placed at the CORNERS of A and B of an equilateral TRIANGLE ABC of side LENGTH 0.2m in air. The electric potential at C is (1/4π∈0=9×109) 1. 9×104V 2. 18×104V 3. 36×104V 4. 72×104VRead more on Sarthaks.com - https://www.sarthaks.com/475515/two-charges-4c-each-are-placed-the-corners-of-and-equilateral-triangle-abc-side-length-air, Correct Option : 3. 36.104V Explantion Read more on Sarthaks.com - https://www.sarthaks.com/475515/two-charges-4c-each-are-placed-the-corners-of-and-equilateral-triangle-abc-side-length-air |
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| 41. |
If the reading of the ammeter is 6a and 4 ohm and r ohm are connected in series with a 6 v battery then what is the value of r |
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Answer» Answer: Explanation: In the given circuit, R2,R6 and R4 are in series. So, R1′=7+5+12=24Ω Now R1′ and R5′ are in parallel. So, |
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| 42. |
How could be angular velocity be perpendicular to linear velocity?USELESS ANSWERS WILL BE REPORTED |
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Answer» Let us imagine a small particle tied to a string rotating around the origin in a circular path in XY plane with a certain CONSTANT ANGULAR velocity W. We know that the magnitude of the angular velocity is the total angle (in radian) covered in 1 sec. But what about the direction? As we know from Newton's first law of motion, an object in motion will retain its state of motion (velocity to be precise) unless an external force is applied on the object. We can use the same sense of the law in rotation, i.e. to the state of rotational motion, or precisely, rotational velocity. However, since it is rotational motion we are talking about, we have to always keep in MIND the momentary position vector of any particle constituting the rotational motion. If we take into account all the momentary position vectors, they will constitute a disc of which the axis is along Z axis. Now, for a particle in linear motion, a force along the direction of velocity cannot change the direction of velocity. In the same analogy, any force along the direction of the axis of the disc cannot change the direction of the axis of the disc. Only a force that has a component perpendicular to the Z axis will change the direction of the axis of the disc, thus changing the plane of rotation. Thus, the direction of rotational velocity is along the axis, i.e. the Z axis. Explanation: Please MAKE me BRAINLIST |
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| 44. |
For an energy State E of a Photon gas , the density of states is proportional to ? |
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| 45. |
how much heat is required to convert 1 kg of ice at 10 degree Celsius to steam at hundred degree Celsius? |
Answer» Here's your answer.... . . HOPE it HELPS you ☆¤☆¤ |
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| 46. |
From a rifle of mass 5 kg, a bullet of mass 50g is fired with an initial velocityof 108 km/h. Calculate initial recoil velocity of the rifle. |
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Answer» USE the FORMULA of LAW of CONSERVATION of momentum. m1u1+m2u2=m1v1+m2u2 |
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| 48. |
Write any two derived physical quantities with there SI units |
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Answer» Explanation: The second table lists the derived physical quantities. Derived quantities can be mentioned in terms of the base quantities. ... LIST of physical quantities. Derived quantity Capacitance Symbol C Description Stored charge per UNIT electric potential SI derived unit FARAD (F = C/V) Dimension M−1 L−2 T4 I2 |
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| 49. |
Write the mathematical form of heating effect of electric current |
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Answer» <P>Answer: A quantitative FORM of Joule's law is that the heat evolved per second, or the electric power loss, P, equals the CURRENT I squared times the resistance R, or P = I2R. hope it helps you please MARK me as brainlist and please follow me and votes on my all answers |
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| 50. |
What is the condition of an electromagnetic induction? a. there must be a relative motion between the coil of wire and galvanometer b. there must be a relative motion between the galvanometer and a magnet c. there must be a relative motion between galvanometer and generator d. there must be a relative motion between the coil of wire and a magnet1 point |
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Answer» Answer: [1] There should be relative motion between the coil of wire & magnet. [2] When a magnet is MOVED inward and OUTWARD in magnetic FIELD & change in magnetic FREQUENCY OCCUR due to which current is induced. |
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