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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 body has A P.E 8000 If it israised to 40m fand its mass ogo 10 ms |
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Answer» Answer: m= 20kg Explanation: P.E = mgh 8000=m( 400) 8000÷400= m 20= m m= 20kg |
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| 2. |
Solve it guyz as Soon as possible |
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Answer» Answer: 31.25m Explanation: |
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| 3. |
The radius of a circle is 2.12metre .its area according to the rule of Significant figures is |
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Answer» Answer: 2.12x2.12= 4.4944 but the RADIUS has three sigfigs THUS BRINGING the NSWER to three SIG figs =4.49 |
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| 4. |
Which type of energy stored in the spring of watch . |
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Answer» MECHANICAL ENERGY....,............ |
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| 5. |
Solve it guyzzz.... it's urgent... |
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Answer» PLZ solve my QUESTION name any FOUR elements of Microsoft access 2007 |
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| 6. |
Define one unit force |
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Answer» In physics newton is the metric unit of force. It was named after Sir Isaac Newton. Sir Isaac Newton was a physicist, mathematician, and philosopher. Newton's theory of classical MECHANICS was one of the most important and influential achievements in SCIENCE. He advanced the works of Galileo, Kepler, and Huygens and FORMULATED his theories into THREE fundamental laws of motion. Newton's laws of motion are the BASIS of classical mechanics. please mark me as the brainliest |
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| 7. |
1 Proof that l erg = 10 -7J. |
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Answer» Answer:1erg_=N*10 RAISE T0 POWER -5*10raise to power -2m ===10 raise to power -7Nm=10 -7J Explanation: |
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| 8. |
two masses 4kg and 2kg are dropped from 5m and 10m height from the ground respectively. which will be accelerated more? |
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Answer» Answer: 4 KG ONE will be ACCELERATED more |
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| 9. |
How does strength of magnetic varry when numbers of turns are change |
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Answer» Answer: INCREASED no. of turns increases the strength of magnetism Explanation: higher the no. of turns ,higher the length and thusvthe AMOUNT of current CARRYING COIL MATERIAL in use is higher so,higher the magnetic field due to increased amount of current flowing through it. |
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| 10. |
State ans explain newton's law of gravitation answer |
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Answer» Answer: 1.Every particle in the universe ATTRACTS every other particle in the universe.This attraction is CALLED as force of attraction. 2.The force of attraction is directly proportional to the PRODUCT of the masses of two particles and inversely proportional to the distance between two particles. Explanation: Let m1 and M2 be the masses of two particles and r be the distance between two particles. Then the force of attraction F=Gm1m2÷r.square where G is GRAVITATIONAL constant. G=6.67×1000000000000 |
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| 11. |
When does he geup in the morning |
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Answer» Answer: what is your QUESTION i can't understand your question PLEASE CHECK your question |
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| 12. |
10*18 electrons each having a charge of 1.6×10_19c pass through a section of the conductor during 10 s. Calculate the current in amperes |
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Answer» I = Q /t I = 1.6 A |
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| 13. |
The car moves with the speed 60kmph for 1hour in east direction and with same speed for 30 min in South direction. The displacement of car from initial position is |
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Answer» Answer: 10√45 km Explanation: Distance covered in East x = Speed × Time = 60 kmph × 1 HR = 60 km Distance covered in South y = Speed × Time = 60 kmph × 30 min = 60 kmph × 0.5 hr = 30 km East and South are perpendicular directions. So, displacement (shortest distance between INITIAL and FINAL position) of CAR (from Pythagoras theorem) is D = √(x² + y²) = √(60² + 30²) km = √(3600 + 900) km = √4500 km = 10√45 km |
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| 14. |
A particle is from upword from the top of the tower of hight 50m with a speed of 15m/s g=10m /s² then find maximum hight above the point of projection |
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| 15. |
derive the formula for kinetic energy of a particle having Mass m and Velocity v using dimensional analysis |
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Answer» Explanation: |
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| 16. |
Why is the value of resistance max in series combination? |
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Answer» PLZ MARK as BRAINLIEST . |
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| 17. |
What is a conjecture give an example for it |
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Answer» Answer: STAEMENTS which are proved neither proved or disproved are CALLED Conjecture . Example : 4= 2+2 (sum of 2 even PRIME ) 1+3 (sum of 2 odd no.) hope it helps |
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| 18. |
What is tynadall effect ...explain it in a very simple lang |
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Answer» Answer: A SCATTERING of beam of light is CALLED tyndall EFFECT |
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| 19. |
81. Presence of fibroblast, macrophages and mast cellsis characteristics of(1) Areolar tissue(2) Vascular tissue(3) Dense connective tissue(4) Skeletal tissue |
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Answer» AREOLAR tissue Explanation: it is the BIT there is no NEED of explanation mark this as BRAINLIST answer |
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| 20. |
At what angle should the two unit vectors be inclined so that their resultant is also a unit vector |
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Answer» Explanation: |
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| 21. |
Ab AC and BC are three loads each of mass M find coordinates of c o m |
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Answer» X=L/3 X=L/3Y=L/3 .......... |
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| 22. |
Read both the statements carefully and choose the correct alternativefrom the following:ASSERTION: As the temperature of a medium increases the refractive indexdecreases.REASON: When a ray travels from vacuum to a medium, then is known asabsolute refractive index of the medium.(a) Both the assertion and the reason are false.(b) Both the assertion and the reason are correct, and the reason is the correctexplanation of the assertion.(c) The assertion and the reason are correct, but the reason is not the correctexplanation of the assertion.(d) Assertion is true, but the reason is false |
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Answer» Answer: c Explanation: because when temperature INCREASES the MOLECULES move in random the light ray can travel in high speed.
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| 23. |
What is electro statis force..... |
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Answer» Explanation: Electrostatic FORCE is nothing but,,,ATTRACTION or repulsion of PARTICLES or objects because of their electric CHARGE. hope it helps |
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| 24. |
Explain need of bending of cyclist on plane circular road |
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Answer» this is the answer of above question. mark as BRAINLIESTS answer..... |
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| 25. |
A system is said to be a heat source when it? |
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Answer» ANSWER:when it becomes too HOT and we cannot touch it as we may BURN our HANDS or when it can burn or melt any substance is CALLED a heat source Explanation: |
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| 26. |
If the coeffficient of volume expansionof solid is 0.00027/°c its coefficient of areal expansion is |
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Answer» Answer: 0.00405/°C Explanation: According to the relation, alpha = BETA /2=gamma/3 where alpha - coefficient of LINEAR EXPANSION beta - coefficient of AREAL expansion gamma - coefficient of volume expansion |
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| 27. |
A 1000 kg vehical moving with a speed of 20 m/s is brought to rest in a distance of 50 m . Find acceleration |
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Answer» By the THIRD EQUATION of KINEMATICS Ans=-4m/s^2 |
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| 28. |
A car starts moving on a straight road with constant velocity of 20m/s find distance travelled by the car in 5second |
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| 29. |
भौतिकी+क्या+है+भौतिकी+कितने+प्रकार+की+हैsome pioneer phyricists Kiya h |
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| 30. |
S. 5 amp. Calculate the equivalent resistance between the pointM and N.میرمonsoren18 ohm(Current)(6) |
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Answer» ANSWER:wisieie me KNOW when you GET to the bottom is a indigenous MADE me THINK very excited about a new job at a indigenous people are Explanation: |
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| 31. |
An object of height 5 cm is kept at a distance of 50 cm from a concave lense of focal length 25 cm. Find the heightand position of the image formed by it. |
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Answer» the IMAGE formed is between the FOCUS and OPTICAL CENTRE of the lens.As virtual image is formed, so the image is diminished. |
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| 32. |
Two toy-car A and B of masses 500g and 200 g respectively are moving with the same speed which of the two has greater kinetic energy? |
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| 33. |
Explain : A coin placed at the bottom of vessel appears to be raised when water is poured in the vessel. |
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Answer» it is DUE to INDEX REFRACTION |
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| 34. |
What happens when the light ray is travelling form one medium to another medium |
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Answer» it causes reflection of LIGHT if the MEDIUM is smooth and POLISHED |
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| 35. |
Define vector product of two vectors and write its characteristics |
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Answer» here in the 2 pictures I have GIVEN detail in VECTOR product |
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| 36. |
A temperature difference of 27°C on a kelvin scale is |
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Answer» Answer: 300.15 Kelvin |
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| 37. |
How does the resistance very if the length of the conductor is doubled keeping the cross section constantly?? |
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Answer» resistance is directly PROPORTIONAL to the length of the conductor hence if length is DOUBLED then resistance also gets doubled. |
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| 38. |
Example of law of conervation of energy |
Answer» ❤️❤️The LAW of conservation of energy states that energy can neither be created nor be destroyed, but it can be transformed from one form to ANOTHER. So I considered an EXAMPLE of it as follows: water is stored at height with potential energy, the water flows and its potential energy is converted into kinetic energy.❤️❤️Explanation: ❤️❤️hello dear here is your answer mark it brainlist ok and follow me... :) ☺️☺️❤️❤️ |
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| 39. |
the vertical distance between the masses is 20/3m at t=0 .the distance becomes 0 at t = ? { g=10}. 1)2. 2),√2 3),4 4)√6 |
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Answer» a) 2s Explanation: For these QUESTIONS remember the condition for equilibrium that is 1. balance the VERTICAL forces 2. balance the HORIZONTAL forces and 3. balance all the moments. In this question there are no horizontal forces and no moment. so we only have to deal with the vertical forces. |
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| 40. |
Why is the resistance of an ideal voltmeter infinity? |
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Answer» Answer: The internal RESISTANCE of an IDEAL VOLTMETER is infinity and the internal resistance of an ideal ammeter is zero. Ammeter is connected in series and voltmeter is connected in parallel with the electric appliance. |
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| 41. |
Which of the following statements are true?[A] When the object is placed nearer to the focal point of a converging lens the image gets bigger. [B] When the object is placed farther away from the converging lens, the image gets smaller. [C] When the object is placed very far away from the converging lens, the image distance approaches focal length. (a) A and B only (b) B and C only (c) A and C only (d) A, B and C |
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Answer» Option (c) A and C only Explanation: If one knows how the image is formed with a converging lens then this is SELF explanatory. When the OBJECT is placed nearer to the focal POINT of a converging lens the image gets bigger When the object is placed very far AWAY from the converging lens, the image distance approaches focal length Hope this helps. |
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| 42. |
Calcuate the power of a body of mass 5kg raised to 25m in 5s (g=10m/s square) |
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Answer» p=mgh/t p=5×10×25/5 p=250j /SEC |
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| 43. |
the force F acting on body depends upon mass m Of The body,acceleration a Of The body. Find the expression of F by using dimensions |
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Answer» Answer: f=ma Explanation: PUT the dimensional formula of MASS and ACCELERATION in f= ma and u GOT the answer |
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| 44. |
Using gauss theorem obtain an expression for electric field intensity due to a plane sheet of a charge hence obtain expression for electric field intensity in a parallel plate capacitor |
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Answer» Answer refer in Attachment Thank you |
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| 45. |
When intial and when final point is zero |
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Answer» Answer: the INITIAL and FINAL position are ZERO in DISPLACEMENT |
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| 46. |
State the factor on which friction depends |
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Answer» Answer: Explanation: The friction force depends on TWO factors: a) The materials that are in CONTACT. The two materials and the nature of their surfaces. ROUGHER surfaces have higher COEFFICIENT of frictions but to slide apart
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| 47. |
If the amplitude of a sound increases, which statement is true? A. The sound energy decreases. B. The wavelength of the sound increases. C. The loudness of the sound increases. D. The pitch of the sound increases. |
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| 48. |
In ballistics demonstration a police officer fires a bullet of 50g with a speed of 200 m/sec in the soft plywood of a thickness 2cm the bullet emerges with only 10% of its kinetic energy find the loss %in speed |
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Answer» ggihhHhszjxuuzuzjshsv H ghxsjbsh jzusjjzjhzhzhxhxhdhduxhxgagvwvzb hxhxfhhddvdvdbsbdbshdh |
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| 49. |
Heat from the sun heats up the earth,but air in the atmosphere does not get heated up.give reason. |
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Answer» Explanation: HEAT from the SUN,heats up the earth but in case of air the heat gets converted into kimetic energy of the air molecules.As the molecules are not DENSELY packed, they are able to ABSORB the energy which INCREASES their kinetic energy. |
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| 50. |
If the unit of forse is 2N ,that of length is 4 m and that of volocity is 6m/s,the unit of mass is |
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Answer» Answer: 4.5kg Force=mv2/r 2=m×6×6/4 4×2=36×m m=36÷8 m=4.5kg |
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