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. |
What is coriolis force and give the mathematical formula also |
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Answer» Answer: : Coriolis FORCE an effect whereby a mass moving in a ROTATING system EXPERIENCES a force (the Coriolis force ) acting perpendicular to the direction of motion and to the axis of rotation. On the earth, the effect tends to deflect moving objects to the right in the northern HEMISPHERE and to the left in the southern and is IMPORTANT in the formation of cyclonic weather systems. Explanation: : |
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| 3. |
Given v1=5i+2j and v2 =ai-6j are perpendicular to each other, determine the value of a. |
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Answer» COS 90⁰ = v1.v2/ 0 = 5A - 12 a = 12/5 a = 2 . 4 Hope this HELPS you |
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| 4. |
A simple pendulum with bob of mass mandconducting wire of length L swings under gravitythrough an angle 2thita. The earth's magnetic fieldcomponent in the direction perpendicular to swingis B. The maximum potential difference inducedacross the pendulum is |
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Answer» ........... ?......... |
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| 5. |
A lamp consumes 1000J of eletrical energy in 10 sec what is its power |
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Answer» Answer:100J/sec Explanation: Power=Energy/time =1000/10 =100J/sec |
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| 6. |
Please help meneed full explanation |
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Answer» REFER to the ATTACHMENT |
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| 7. |
Define vector addition |
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Answer» Explanation: Vector addition is the operation of ADDING TWO or more vectors together into a vector SUM. The so-called PARALLELOGRAM law gives the rule for vector addition of two or more vectors. |
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| 8. |
What is avogadro law problem |
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Answer» Answer: it SAYS that the VOLUME is directly PROPORTIONAL to the number of MOLECULES of gas at the same temperature |
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| 9. |
At what altitude (h) above the earth's surface wouldthe acceleration due to gravity be one fourth of itsvalue at the earth's surface?(1) h = R(2) h = 4R(3) h = 2R(4) h = 16R |
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Answer» h=R Explanation:g'=g/4 By RELATION g'=g/ (1+h/r)^2 g/4=g/ (1+h/r)^2 By SOLVING we get h=R |
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| 10. |
Please give the observation of the working of electric generator |
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Answer» Answer: In an electric generator a RECTANGULAR coil is made to rotate rapidly in the magnetic FIELD between the poles of a horseshoe type magnet. When the coil rotates it cut the magnetic field lines DUE to which current is produced in the coil . Answer: State the principle of an electric generator. Explanation: MAKE me as brainaliest |
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| 11. |
Draw the displacement - time graph for a particle moving with uniform velocity. |
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| 12. |
What is the displacement if force applied in 60j work is 70N?? |
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Answer» Answer: work = force × displacement x. = 60 / 70 = 0.857 m |
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| 13. |
State flaming's left-hand role |
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Answer» Fleming's left hand RULE states that if the thumb,foredinger and the middle finger are stretched mutually perpendicular to each other then the thumb represents the DIRECTION of force..the forefinger represents the the direction of magnetic field and the middle finger represents the motion or direction of the induced currrent. |
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| 14. |
56. Four cells each of resistance 1 ohm and each having e.m.f.1.5 volt are connected in series to a resistance of 2 ohm.Calculate the current. |
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Answer» Answer: 1 AMP because R=2+1+1+1+1=6 ohms and V= 1.5*4=6 volts Now i= v/r so 6/6 GIVES 1amp |
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| 15. |
Exercis1. Choose the correct option.i The resultant of two forces 10 N and 15 Nacting along +x and - X-axes respectively,is(A) 25 N along+x-axis(B) 25 N along - x-axis(C) 5 N along + x-axis(D) 5 N along - x-axis |
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| 16. |
Significance of dulong and petit's law |
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Answer» Answer: The law of Dulong and Petit states that the product of the specific heat CAPACITY of a SOLID element and its mass per mole is constant. The value of the constant may be found from the principle of equipartition of ENERGY. ... In modern terms the mass m divided by atomic weight M gives the number of moles N. If you find this answer helpful, please MARK it as brainliest ..... Follow_meh!!! |
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| 17. |
What is the fahrenheit scale of temperature |
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Answer» Answer: FAHRENHEIT temperature scale. Fahrenheit temperature scale, scale based on 32° for the freezing point of water and 212° for the boiling point of water, the interval between the TWO being DIVIDED into 180 EQUAL PARTS. |
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| 18. |
What is biodivesity park |
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Answer» Answer: HELLO.... here is ur answer:-) creation of BIODIVERSITY parks is an innovative and novel approach. Biodiversity parks, which are assemblages of species in the form of biotic communities that belong to a particular ecological range, help promote urban biodiversity conservation as they SERVE as nature RESERVES within urban areas. |
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| 19. |
Explain with diagram the connection of resistances connected in series |
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Answer» Answer: Components connected in series are connected along a single CONDUCTIVE PATH, so the same current flows through all of the components but VOLTAGE is dropped (lost) across each of the resistances. In a series circuit, the sum of the voltages consumed by each INDIVIDUAL resistance is equal to the source voltage. Explanation: |
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| 20. |
10 useful effects of friction |
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Answer» I don't KNOW what to tell btw which GRADE QUESTION is this.... |
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| 21. |
No current flows between two charged bodies when connected together if they have the same? |
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Answer» potential Explanation: |
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| 22. |
A ball is thrown upwards takes 4 seconds to reach the maximum height find the initial speed with which it was thrown and the maximum height reached |
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Answer» time taken (t)= 4s final VELOCITY (v)=0 acceleration (a) = -9.8 ( as it is thrown upward) a) let inital velocity be u using first equation of MOTION v = u + at 0 = u + (-9.8)(4) 0 = u - 39.2 39.2 = u so, the initial velocity was 39.2 m/s b) let maximum height be s using third equation of motion 2as = v^2 -u^2 2 (-9.8)(s) = 0^2 - (39.2)^2 -19.6 s = - 1536.64 19.6 s = 1536.64 s = 1536.64/19.6 78.4 so, the height COVERED was 78.4 m Explanation: |
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| 23. |
In a certain field, the potential energy is U = ax^2 - bx^3, where a and b constants. The particle is in stable equilibrium at x equal to(1) Zero(2) a/3b(3) 2a/3b(4) 2a/b |
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Answer» U=ax2-bx3 Explanation: du/dx=2ax-3bx2 d2u/dx2=2a-3bx 2a-3bx=0 2a=3bx x=2a/3b |
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| 24. |
Line spectrum can be obtained from?a)Atomsb)Moleculesc)Ionsd)All of them |
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Answer» (a) ATOMS MARK it as BRAINLIEST |
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| 25. |
What is a concave lens |
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Answer» Answer: A concave lens is a lens that possesses at LEAST one surface that curves inwards. It is a diverging lens, meaning that it SPREADS out light rays that have been REFRACTED through it. A concave lens is thinner at its centre than at its EDGES, and is used to CORRECT short-sightedness |
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| 26. |
If the focal length of a convex mirror is 2.5cm. Radius of curvature of this mirror is 5n . what is value of n? |
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Answer» F is equal to R/2 So By APPLYING above formula, N is equal to 1 Explanation: |
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| 27. |
Percentage error in the measurement of a radius of a sphere is 4% find the percentage error in the measurement of the volume |
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| 28. |
Is the bermuda triangle has any magical power? |
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Answer» Answer: no bcuz bermuda TRIANGLE has more GRAVITATIONAL FORCE and DUE to this it is ABSORBING things towards it. |
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| 29. |
In terms of m1, m2 & g find the acceleration of both the block. |
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Answer» m2g-T2=m2a/2 .........(I) T1=m1a .........(II) T2 = 2T1 ........(III) from ii and iii we have T2= 2m1a PUTTING in (I) m2g-2m1a=m2a/2 m2g=m2a/2+2m1a m2g=(m2a+4m1a)/2 2m2g/ (m2+4m1=a) |
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| 30. |
Define coefficient vector |
Answer» Definition (D 1.4.1) A set of 3 linearly independent VECTORS r , r , and r in space is called a basis of the vector space. ... The real numbers , , and are called the COEFFICIENTS of r with RESPECT to the basis r , r , r . |
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| 31. |
You are required to obtain An erect image of an object placed in front of a convex lens |
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Answer» i didnot KNOW.........SORRY ,i CANT HELP you in this QUESTION |
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| 32. |
A bomb is dropped from a plane flying horizontally with uniform speed. Show that the bomb will explode vertically below the plane. Is the statement true If the plane flies with uniform speed but not horizontally |
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Answer» Explanation: No not possible at all as if u DROP a BOMB as fly vertically is not possible as the bomb will fall but u will be away from it |
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| 33. |
Explain the newton 's first law of motion |
Answer» NEWTON'S FIRST LAW OF MOTION"THE TENDENCY OF AN OBJECT TO REMAIN AT THE STATE OF REST OR IN UNIFORM MOTION IN A STRAIGHT LINE, UNLESS IT COMPELLED TO CHANGE THAT STATE BY EXTERNAL FORCE INPRESSION ON IT" THIS LAW IS ALSO KNOWN AS LAW OF INERTIA In simpler sentence... this law tells US that an objects will always stay at rest or in uniform motion, untill we try to change its state by outer FORCE which is unbalanced |
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| 34. |
What do you mean by velocity |
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Answer» The INCREASE in the rate if CHANGE of displacement is KNOWN as Velocity. SI unit=m/s Formula=Displacement/Time Hope it HELPS you |
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| 35. |
What will be the reflection from mirror 3 |
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Answer» answer in the pic mark as BRAINLIEST! |
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| 36. |
A man is inside a lift. When the lift ismoving up with certain acceleration,the apparent change in weight is25%. When the lift moves down withdouble the acceleration, the apparentChange in weight is) 25 2) 50% 3) 75% 4) 40% |
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Answer» Answer: 2 Explanation: APPARENT weight=mg(1-a/g) and MOVE down DOUBLE ACCELERATION than Aw=2a/g×100% |
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| 37. |
Find the refractive index of a prism |
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Answer»
The refractive index depends on the material and the wavelength of the LIGHT. The LARGER the refractive index, the larger the DEVIATION angle. mark as brainliest!
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| 38. |
a body of mass 1 kg fall freely from a height of hundred metre on a platform of mass 3kg which is mountain on spring having a spring constant K barabar 1.25 into 10 to the power 6 Newton per metre the body St to the platform and the springs maximum compression is found to be x then value of x will be close to |
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Answer» Acc. TO me, I think your answer is 4 cm ---------------------------------------------- Use conservation of energy Energy released =energy absorbed by spring when fall from H height when ball fall height h so body do work work done by gravitat. POTENTIAL Energy=work done to compress spring 1/2*K*x^2=mgh 1/2*1.25*10^6*x^2=1*10*100 If you solve then x^2=1/625 x=1/25 x=0.04m x=4cm I hope you understand my answer
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| 40. |
Abody is moving with a constant velocity. What will bethe resultant force on it? |
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Answer» If a BODY is MOVING with a constant VELOCITY then,,, the resultant force will be acceleration ×mass of the body = distance covered Explanation: please mark this as brainliest |
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| 41. |
Who is the father of unification of Physics |
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Answer» please mark this as brainliest |
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| 42. |
Length,electriccurrent,temperature,volume which is the odd one give answer |
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| 43. |
a body of weight 450 Newtons is pushed by a force of 100 Newton on a rough horizontal plane if the line of action of push is 25° with the horizontal find the coefficient of friction |
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Answer» Explanation: Given that, Weight, W=100N Acceleration, a=1m/s
Acceleration when force is DOUBLE, a=10m/s 2
Now, Let the External Force be F and friction force be f. Then, F−f s
=ma F−μN=ma F−μ100=10×1 F−μ100=10....(I) We KNOW, When Force is doubled, Then, 2F−f s
=ma 2F−μN=ma 2F−μ100=10×10 2F−μ100=100....(II) Now, from equation (I) and (II) F=90N Now, put the value of F in equation (I) 90−μ100=10 −μ100=10−90 μ= 100 80
μ=0.8 Hence, the COEFFICIENT of RESTITUTION is 0.8 |
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| 44. |
The blades of a helicopter rotate at an average rate of 500 rotations per minute. What is the frequency of rotation of blades |
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Answer» the frequency is the NUMBER of times an event OCCURS in a CERTAIN time interval. here it is 500times/min or 8.33333times/sec so 8.33 cycles/sec |
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| 45. |
Who is the father of unification theory |
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Answer»
JAMES CLERK Maxwell is the FATHER of the UNIFICATION theory |
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| 46. |
Distinguish between instantaneous velocity and average velocity |
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Answer» INSTANTANEOUS VELOCITY MEANS the velocity in any specific time while AVERAGE velocity means the total velocity in total. |
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| 47. |
if u bar is equal to two ICAP - 2 J cap + 3 k cap and the final velocity is equals to two ICAP - 4 j cap + 5 k cap and it is covered in a time of 10 seconds find the acceleration vector |
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Answer» Answer: ACCELERATION= (-2j^+2k^)/10= -0.2j^+0.2k^ Explanation: That VALUE will be achieved by using the formula Δv/t. |
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| 48. |
Relation between B and H in magnetic field |
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Answer» PLEASE MARK me as the brainliest Explanation: answer is GIVEN in the ATTACHMENT |
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| 49. |
What is refractive angle? |
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Answer» The angle between a REFRACTED ray and a line DRAWN normal to the interface between TWO media at the POINT of refraction. |
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| 50. |
A car of mass 500kg is moving with a speed of 60m/s. Find the kinetic energy |
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Answer» k.E =1/2 m V square k.e= 250×3600 |
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