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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. |
Parallax error define |
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Answer» The error/displacement caused in in the APPARENT position of the OBJECT due to the viewing angle that is other than the angle that is perpendicular to the object.Explanation:PLS MARK as brainliest if you find it helpful |
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| 2. |
write the formula to find the magnitude of the gravitational force between the Earth and the object on the surface of the earth ( formula ) |
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Answer» ÄŇŃĘÝØŇĞ+ĂŠÊÝÖ ÄŘMÝ... HĚŘĚ'S UR ANSWER... WRITE the formula to find the magnitude of the GRAVITATIONAL force between the earth and an object on the surface of the earth.Let the MASS of earth = M.Let the mass of the object = m.Distance between the the earth's CENTRE and object = Radius of the earth = R.Therefore,Gravitational Force = F = GMm/ R 2THANK YOU.... SARANGHAYO SISØ.... STAY SAFE AND STAY GOLD... TC... |
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| 3. |
What is the value of R in the effective resistance of R and 12 ohm connected in parallel is 3 Ohm |
| Answer» PLEASE MARK me BRAINLIEST to RECIEVE your ANSWER | |
| 4. |
State the universal law of gravitation .. |
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Answer» Newton's LAW of universal GRAVITATION is USUALLY STATED as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their CENTERS. d : F=GmMd2 |
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| 5. |
निर्वात में किसी प्रकाश की तरनगदेरध्य 6400अंगस्ट्रॉन्न है यदि जल का अपवर्टनांक 4/3 हो तो जल में इसकी तरनगदेरध्या की gdna कीजिए |
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| 6. |
Find the number of significant in the following a) 0.012m b)8.950×103kgm-3 |
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| 7. |
The orbiting velocity of an earth satellite is 8 kms.....what is Ve = √2vo |
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Answer» bdbdbdbdhdhhdhdhsExplanation:dhdhhdhdhdhdydeeyey |
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| 8. |
What is the effective resistance if the fore home and 6 home are connected parallel to each other |
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Answer» Connect two 9 ohms RESISTANCE in SERIES now it becomes 18 ohms , now connect remaining one 9 ohms resistance in parallel with this arrangement. You will get 6 ohms as a reault of thia combination.PLS follow me if it's HELPFUL and MARK me as brainlist pls |
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| 9. |
If common-mode gain decreases, the common-mode rejection ratio (CMRR) will .... a)increase b)decease c)zero d)unchange |
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| 10. |
What is the number of reflections when an object is placed between two mirrors which have an angle of sixty degrees with each other? |
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Answer» If the angle equals 60 DEGREES, the total number of reflections is 360/60 – 1 = 6 – 1= 5.hope it helps youplease MARK me as BRAINLIST |
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| 11. |
A particle is moving along a straight line y = 3 m at a velocity 5 m/s. Its angular speedabout origin when it is at point P(4 m, 3 m)is |
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Answer» w = V SIN(Q) / RWHERE r is the position vector of point P(4M, 3M)v sin(Q) is the perpendicular component of velocity to the position vector.OP = r = √(16m2 + 9m2 ) = 5msin(Q) = 3/5-w = (5 x 3/5) / 5 = 0.6 radian / second |
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| 12. |
How we Calculate rate of change of momentum of mass 12000 kg velocity 12 m/s velocity becomes 10 m/s after 5 s |
| Answer» EASY ????????????????? | |
| 13. |
when a cotton yarn is burnt,it smells like burning paper, whereas burning a woollen yarn smells like burning hair why? |
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Answer» Cotton is a plant product and paper is also made from PLANTS. So when cotton is BURNT, it smells like BURNING paper. While WOOL and hair both are from animals, hence on burning they SMELL similar |
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| 14. |
A particle starts moving rectilinearly at time t=0 such that its velocity 'y'changes with time 't' according tothe equation v=t-t where t is in seconds and v is inm/s. The time interval for which the particle retards is(A)t |
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Answer» know the ANSWER I searched the GOOGLE and say after the answer very very sorry very very very very sorry I say later I searched Google and say please WAIT for that time WORK ok bye thank you have a nice day |
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| 15. |
Six electrons. are added to 1. coulomb of apositive change. The net changeil approximately |
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Answer» positiveOkPlease MARK my ANSWER as BRAINLIST and I will FOLLOW you TRUST me |
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| 16. |
Block M slides down on frictionless incline as shown. Find the minimum friction coefficient so that m does not slide with respect to M. |
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Answer» M SLIDES to 37°Explanation:okkkkkkkkkk |
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| 17. |
A system consisting of two objects has a total momentum of (18 kg m/sec)i and its center of mass has the velocity of (3 m/s)i. One of the object has the mass 4 kg and velocity (1.5 m/s)i. The mass and velocityof the other objects are |
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Answer» A Sherpa of mass 80 kg is instructed to carry a packageof mass 20 kg from the BASE camp to the summit of amountain 1200 m high. (i) How much work the Sherpahas to do against gravity? (II) Also, find the change inpotential energy of the package if the POTENTIAL energyat the base of the mountain is taken as zero.(Take g = 10 m s-2) (Ans. 1.2 * 106 J, 2.4 x 1053)EXPLANATION:A Sherpa of mass 80 kg is instructed to carry a packageof mass 20 kg from the base camp to the summit of amountain 1200 m high. (i) How much work the Sherpahas to do against gravity? (ii) Also, find the change inpotential energy of the package if the potential 053) |
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| 18. |
37. A circular disc of mass 0.250 kg and radius 2.5 10 2 m is fixed perpendicularly to the end of a wire of length 0.3 m and diameter 10-3 m. Find the rigidity modulus of the wire if the period of torsionaloscillations is 1.05 s. |
| Answer» LET's tryMake me BRAINLIEST PLZ | |
| 19. |
Molecular formula of the chloride of an element ‘X’ is XCl2 . This compound is a solid. Which of the following element be present in the same group as ‘X’ |
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Answer» yoyou itcoycExplanation:pyxrz7rz8rz8rxirzirz8rz8rz8rz8rz |
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| 20. |
there is a change in velocity observed from 10m/s to 15m/s when a force of 300N is applied on a body. calculate the mass of the body? |
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Answer» 60 kgExplanation:Given: INITIAL velocity (u)= 10 m/s FINAL velocity (v)= 15 m/s force applied (F)= 300 N TIME (t)= 1s Acceleration (a) = (v-u)/t = 5 m/s^2Therefore, Force(F) = mass(m) * acceleration (a) => m = F/a => m= 300/5 kg => m= 60 kg (ans) |
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| 21. |
A heavier body has less inertia(True or False) |
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Answer» e inertia that an OBJECT has, the more mass that it has. A more MASSIVE object has a greater tendency to RESIST changes in its state of motion. |
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| 22. |
How we Calculate rate of change of momentum |
| Answer» CHANGE in momentum of an OBJECT is its mass TIMES the change in its VELOCITY. Δp=m⋅(Δv)=m⋅(vf−vi) ._______________________________ | |
| 23. |
# The earth-moon distance is about 60 earth radius. What will be the angular diameter(a) of earth as seen from moon |
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Answer» Answer. As given in the PROBLEM, the distance from the MOON and the earth is 60 RADIUS. THUS, 1.8 degree is the approx VALUE for diameter of earth.Explanation: mark me as branlist and follow me plz |
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| 24. |
Consider the hypottitical reactions given below. These reactions involvethe collision between a high-energypielen! From an accelerators and astationaly proton (in the midleus of ahypsogen atom sesving as target ) .Which of these reaction are impossible? |
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Answer» hihihihihihihihihihihihihihihihihihihihi |
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| 25. |
A system consisting of two objects has a total momentúm of (18 kgm/sec)i and its center of mass has the velocity of (3m/s)i .One of the object has the mass 4kg and velocity (1.5m/s)i . The mass and velocity of the other objects are |
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Answer» tion:SolutionTotal momentum=(18 kgm/sec)ivelocity of Center of mass=(3 m/s)i.Mass of one OBJECT=4 kgVelocity of this object=(1.5 m/s)ilet m be the mass of other OBJECTAND V be the velocityNow we know total momentum =Total massX velocity of center of mass(18 kgm/sec)i=(m+4)(3 m/s)i.or m=2 kgNow Vcm=(m1v1+m2v2)/(m1+m2)or3i=(4*1.5i + 2v)/6or 18i=6i+2vv=6i m/sechence a is CORRECT |
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| 26. |
A car is making a turn at speed v. The radius of the turn is r and the centripetal force on the car is F.If the car rounds the same curve at speed 2v, therequired centripetal force is |
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Answer» tion:Any net force causing uniform CIRCULAR MOTION is called a centripetal force. The direction of a centripetal force is toward the center of curvature, the same as the direction of centripetal acceleration. According to Newton’s second law of motion, net force is mass TIMES acceleration: net F = ma. For uniform circular motion, the acceleration is the centripetal acceleration—a = ac. THUS, the magnitude of centripetal force Fc is Fc = mac.By using the expressions for centripetal acceleration ac from ac=v2r;ac=rω2, we GET two expressions for the centripetal force Fc in terms of mass, velocity, angular velocity, and radius of curvature: Fc=mv2r;Fc=mrω2.You may use whichever expressioni hope it useful for.make me as brainliest answer |
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| 27. |
Kelvins method in meter bridge experiment is known as 1) equal distance method 2) null deflection method 3) equal deflection method 4) zero distance method |
| Answer» THUS, KELVINS method is a deflection method. The POINT D is called the BALANCED point. | |
| 28. |
What is the full meaning of BSFA? |
| Answer» BUREAU of STUDENT FINANCIAL ASSISTANCE | |
| 29. |
Q.How does newton's second law of motion differ from first law of motion? |
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Answer» Newton's First Law STATES that an object with no NET force acting on it remains at rest or moves with constant VELOCITY in a straight line. Newton's Second Law states that the ACCELERATION of an object is directly proportional to the net force on the object and inversely proportional to the mass of the object.Explanation:hope it helps you.. |
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| 30. |
2. A parallel-plate capacitor has an area of 4.0 cm2, and the plates are separated by 1.0 mm. a. What is the capacitance?b. How much charge does this capacitor store when connected to a 9.0 V battery? |
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Answer» tion:HOPE it helps YOUPLS mark as brainliestSorry for LATE ANSWER... |
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| 31. |
Which of the following statements is not true for a stone attached to a string and swung in a uniform vertical circuiar motion?O The magnitude of resultant force acting onthe stone changes depending on theposition of the stone in the circle0 The tension in the string is lowest when thestone is at the highest point of the circularmotion0 The kinetic energy of the stone is constantThroughout the entire circular motion.0 The resultant acceleration is always directedtowards the centre of the circle |
| Answer» FIRST FOLLOW me ............... | |
| 32. |
111 iv) The magnitude of vector product of twounit vectors making an angle of 60° witheach other is(A) 1(B) 2(C) 3/2 (D) 13/2 |
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Answer» thhjhgyuiikjnbvfwc NMKK BANK DETAILS jananExplanation:ghjjkkkklmkjjhggbnkll |
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| 33. |
A circuit wave has a charge of 200C flowing for 2mins and dissipating heat off 400J what will be the voltage through circuit 4V6V8V2V |
| Answer» 4V is the ANSWER.................. | |
| 34. |
Two resistances when connected in series have an equivalent resistance of 15 ohm and when connected in parallel, the equivalent resistance is found to be 3.6 ohm. Find the individual resistances. |
| Answer» MARK BRILLIANT ANSWER | |
| 35. |
Water and kerosene is taken in beaker is shown in the figure. (a) Identify A and B. Justify your answer. (b) If petrol, diesel etc. catches fire, it is said that one should never try to extinguish it using water. Why? |
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| 36. |
_____________is used to measure specific heat. |
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Answer» calirometer is your ANSWER i HOPE it helpsmark me as BRAINLIEST |
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| 37. |
What is the correct relationship between refractive indicesn, ni and n2if the behavior of light is as shown in the figure?ni > nni |
| Answer» TION:What is the QUESTION I can't UNDERSTAND | |
| 38. |
describe with th help of a diagram how compressions and rarefactions are produced in air near a source of sound.with diagram |
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| 39. |
Why do we need to differentiate impulse to find minimum value ,pls explain |
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Answer» atiTiRJJFjtsznggzmgj,fnglxhmxmgzlhshxxhlstostotsotzizhlhxl |
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| 40. |
A micrometer has 150 equal divisions on the circular scale, and on one full rotation of circular scale main scale advances by 0.02 cm on themain scale. The least count of the micrometer (in cm) is4 x 10-56.21 x 10-31.33 x 10-41.21 x 10-2 |
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Answer» A micrometer has 150 equal divisions on the circularscale, and on one FULL rotation of CIRCULAR SCALE mainscale ADVANCES by 0.02 cm on the main scale. The leastcount of the micrometer (in cm) is |
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| 42. |
Explain why an electrical wiring usually covered with a layer of plastic. |
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Answer» because it didn't COVER the CURRENT follow in OUTSIDE and it is very riskyExplanation:MARK me as BRAINLIST please |
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| 43. |
___________will be the weight of a person on earth who weighs 11N on the moon |
| Answer» TION:vhhuighhh....... hjbgjjcffr57uvxftu8 | |
| 44. |
Please please please help me and tell the correct answer |
| Answer» 2 OPTION is CORRECTEXPLANATION:HOPE it is HELPFUL | |
| 45. |
Newton's first law of motion describes the following |
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Answer» Newton’s FIRST law of MOTION defines the inertia of the BODY. It states that everybody has a tendency to remain in its state (either REST or motion) due to its inertia.........! |
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| 46. |
A 2kg ball moving at 6 ms collides head on with a 3kg ball moving in the oppositedirection at12 m/s. The velocity of eachball after the impact, if the coefficient ofrestitution is 1/2, is(A) - 10.2m/s; -1.2 m/s(B) -10 m/s; - 2 m/s(C) 10 m/s; 14 m/s(D) 10.2m/s, - 2 m/s |
| Answer» YOR ANSWER IA A OK THANKS | |
| 47. |
a ball is projected from ground and it crosses point A and B which are on same level after 3sec and 5 seca ball is projected from ground and it crosses point A and B which are on same level after 3sec and 5 sec |
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Answer» It means it TOOK 3 SECOND to reach from A to B.Due to symmetry it will take 02 second to reach from A to C.Hence total time to reach from ground to C = 3+2= 5 secMaximum height = 1/2 *g * t^2= 1/2 * 10 * 25 = 125 m |
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| 48. |
Q.Find out the value of temperature similar in celsius and fahrenheit scale. |
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Answer» 40°hope it will HELP you |
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| 49. |
What will be the value acceleration of gravity on a planet whose mass is 4times and radius is 2times as that of earth 19.6m/s24.5m/s229.4m/s220.6m/s29.8m/s2 |
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Answer» 9.8m/s^2hope it will HELP you |
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| 50. |
A block of Mass M is moving with a velocity v on straight surface. What is the shortest distance and shortest time inwhich the block can be stopped ifU is coefficient of frictionV()022ug ug02ug ugU22()2M 9' ugNone of the above |
| Answer» FORCE of friction=μN=μmgTherefore RETARDATION = μmg/m=μgFrom,or,from v=u+ator, t=v/μg | |