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. |
While using a fixed pulley effort is equal to the load then how it makes work easier?? |
| Answer» EQUAL load KEEP up both SIDES load LOW and work easily | |
| 2. |
A 10kg body suspended by a rope is pulled by horizontal force to make an angle of 60 |
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Answer» Your question is quite incomplete. According to the given data , As MASS and angle both are given then we NEED to find the horizontal FORCE F = ? As given . Mass = 10 kg. g = 10 m /sec² θ= 60° We know the formula F =mg cosθ Now put the VALUE in the formula . F = 10 × 10 COS 60° F = 100 × cos 60° F = 100/2 F = 50 N. Hope it Helps :-) |
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| 3. |
Two objects of masses m1 and m2 fallfrom the heights h1 and h2 respectively.Th e ratio of the magnitude of theirmomenta when they hit the ground is |
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Answer» By Newton 3rd law of MOTION, v^2 = u^2 +2as |
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| 4. |
Show that acceleration is constant |
| Answer» ACCERATION is CONSTANT when the GRAPH is LIKE that | |
| 5. |
an electric bulb marked as 40W and 220V is used in a circuit of supply voltage 100V .Now its power is |
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| 6. |
A tv set is an example of matter and so is the signal it receives do you agree explain |
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Answer» No TV is matter as it has MASS as well as volume but signal has NEITHER has mass nor volume and hence it is not a matter |
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| 7. |
How to construct a solar system showing circular motion. |
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| 8. |
four resistances p q r x formed a wheat stone bridge. the bridge is balanced when r is 100 ohms . if p and q is interchanged the bridge balance 121 ohms for r. what is the value of x |
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Answer» X= 110 ohm. |
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| 9. |
a ball is thrown downward from the top of building and reaches the ground in 3 sec what is the height of building |
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Answer» ʜᴇʟʟᴏ ᴍᴀᴛᴇ! |
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| 11. |
How many galaxies are known by us nowadays?? |
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Answer» Hey friend here is ur answer |
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| 12. |
the solenoid can be regarded as a combination of circular loop placed side by side each behaving like a magnet of magnetic moment ia where i is the current and a area of the loop |
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| 13. |
A current of 2a flows through a bulb calculate energy transfer |
| Answer» ENERGY TRANSFER is equal to the 2 JOULES per second | |
| 14. |
A copper wire having resistance r is cut into 4 equal parts. find resistance of each part in terms of original resistancs of wire |
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Answer» PLEASE MARK me BRAINLIST please please please please please please please please please please please please please please please |
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| 15. |
Comparison of emfs of two cells using potentiometer |
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Answer» Here, the FALL of POTENTIAL along the length l of the potentiometer wire is equal to the emf of the cell, as no current is being drawn from the cell. Then, ... Thus it is possible to COMPARE the emf's of TWO given CELLS by measuring the respective balancing lengths l1 and |
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| 16. |
Calculate the speed of light in a medium having refractive index 4/3 |
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Answer» Refractive INDEX= SPEED of light in VACUUM /in other medium |
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| 17. |
A car is travelling at a speed of 30 km per hour is brought to rest in a distance of 8 m by applying brake if the same car is moving at a speed of 60 m per hour then it can be brought to rest with the same braking |
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Answer» u = 30 km/h = 30 *5/18 m/s = 25/3 m/s v = 0 m/s s = 8 m as v^2 - u^2 = 2 a s so, 0 - (25/3)^2 = 2 a * 8 or, - 625/9 = 16 a or, a = - 625/144 m/s^2 Now, u = 60 km/h = 60*5/18 m/s = 50/3 m/s v = 0 m/s a = - 625/144 m/s^2 and v^2 - u^2 = 2 a s so, 0- (50/3)^2 = 2(-625/144) s or, 2500*144 / 9*2*625 = s so, s = 32 m |
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| 18. |
A car is travelling with a velocity of 20m/s suddenly car driver sees a child at a dustance of 50m from his ca whay will be the minimum deaccelaration |
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Answer» HOLA USER!! Your answer :- But we had to find DECELERATION so => a = - 4 - a = 4m/s^2 Hope it helps!! ☆ Regards @e ☆ |
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| 19. |
Compression members in a truss is generally known as |
| Answer» COMPRESSION MEMBER in a TRUSS is KNOWN as STRUTS. | |
| 20. |
What is difference b/w resistance nd resistivity |
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Answer» Rasictance---- |
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| 21. |
a body p is thrown vertically up with velocity of 30m/s and another body q is thrown up along the same vertical line with same velocity but 1 second later from the ground when they meet |
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| 22. |
1 Joule =____Calorie |
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Answer» Hey mate here is your answer.... |
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| 23. |
A brass rod of length 3 meter is clamped at the centre it emits a not of frequency 600 hz when longitudinal vibration are excited |
| Answer» ALRIGHT I will give you the ANSWER SHORTLY just WAIT for a minute | |
| 24. |
A body is thrown vertically up from the ground. it reaches a max height of 10 m in 5 secs...after what time it will reach the ground frm max height |
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Answer» After 5 SECONDS from the max HEIGHT |
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| 25. |
A book.is placedon.a table is at rest. is/the force of friction acting on it or not? |
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Answer» Hello |
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| 26. |
Calculate the effective capacitance between a and b |
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Answer» Where's your DIAGRAM?..PLZZ SEND UR diagram..I will SOLVE it |
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| 27. |
Calculating mode for grouped frequency distribution |
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Answer» hey BRO if you want answer for this QUESTION plss go and type this link on youtube. HTTPS://youtu.be/A1YzlPC5wTE
if it helps you PLS MARK as brainliest. and if possible a thank you plss.. |
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| 28. |
Introduction of synthetic fibers in the textiles industry brought revolutionary change across the world in the dressing patterns irrespective of culture and customs .how do you appreciate this.? |
| Answer» ALRIGHT I will GIVE you the ANSWER SHORTLY just wait for a MINUTE | |
| 29. |
A boat can travel with a speed of 13km/hr in still water if the speed of the stream is4 km/hr find the time taken by the boat to go 68 km downstream |
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Answer» t = 4 h Explanation: We're asked to find the time t it takes a boat to travel 68 km . We know: SPEED of boat with respect to earth: 13 km/h speed of stream with respect to earth: 4 km/h We're given that the boat travels DOWNSTREAM, i.e. with the CURRENT, so the NEW speed of the boat is 13 km/h + 4 km/h = 17 km/h The time to travel 68 km with this speed is thus t = 68 km 17 km h = 4h
HOPE it helps. pls maek as brainliest, and a thanks plss |
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| 30. |
What is turning operation |
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Answer» HEY ... |
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| 31. |
A ball thrown vertically upward with speed 19.6 m per second from a top of a tower and return to the earth in 6 second find the height of the tower |
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Answer» If ball is thrown upwards, |
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| 32. |
100cc motorcycle rideing 120000 km what happens in engine |
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Answer» If a CAR has 100K miles or more, it's considered "not reliable" and pretty used. Now, when I look through used bike CLASSIFIEDS, the majority of BIKES with the most miles have between 20K-30K. Why is that? Is 20K-30K alot of miles for a bike. A TYPICAL car can run with minor problems to about 120K miles. |
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| 33. |
How long does a proton live? |
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Answer» HEY USER ____________//___/_______/_____=____=/_ HERE IS YOUR ANSWER __^^_______^^€_^_€€___€€€ 10 the POWER 30 I HOPE IT IS HELP YOU DEAR |
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| 34. |
Please give answer..... |
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Answer» The ANSWER is 12x^3-14x+5 |
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| 35. |
Sini/sinr = constant ... whats the meaning of this ? |
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Answer» It is a constant ,given by snell. |
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| 36. |
A particle is moving in a straight line under constant acceleration of 4 metre per second square if its velocity at time is equal to zero is 10 M per second the displacement of particle is the fifth second of its motion is |
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Answer» Motion in fifth second will be motion performed after 4 seconds and UPTO 5 seconds. |
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| 37. |
a velocity of particlef mass 250gm changes from 10m/s to 16m/s. Assuming that a constant force acts on it.Find the magnitude of force |
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| 38. |
Is it necessary to take x axis as i^? |
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Answer» Yes. because it is representative of X AXIS |
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| 39. |
Any body kept in a fluid experiences an upward force called |
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Answer» The upthrust force or Buoyancey experience in UPWARD DIRECTION if ANYTHING KEPT in fluid. |
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| 40. |
A particle moves according to the equation x=2t^2-5t+6 find average velocity |
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Answer» Its VELOCITY is the INTEGRATION of x. |
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| 41. |
An optimal current ratio should be greater than 1.0. a. true b. false |
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Answer» True. Current ratio is a PART of Liquidity ratio, and it means that whether the COMPANY can pay off its OBLIGATIONS, be it short-term or long-term. It checks the current TOTAL assets of a company against that of the current total liabilities. Current Ratio = Current Assets/Current Liabilities; The Ideal Current ratio is greater than 1. If it is less than 1, it means that the company is not able to pay off its obligations. Whereas, if it is greater than 1, it means that the company can pay off its obligations and still have some leftover. |
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| 42. |
Please explain derevation of 2nd equation of motion mathematically |
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Answer» (2) Second equation of motion: s = ut + 1/2 at^2 sol. Let the distance travelled by the body be “s”. We know that Distance = Average VELOCITY X Time Also, Average velocity = (u+v)/2 .: Distance (t) = (u+v)/2 X t …….eq.(1) Again we know that: v = u + at substituting this value of “v” in eq.(2), we get s = (u+u+at)/2 x t =>s = (2u+at)/2 X t =>s = (2ut+at^2)/2 =>s = 2ut/2 + at^2/2 or s = ut +1/2 at^2 This is the 2ND equation of motion. |
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| 43. |
If a is a vector and x is a non-zero scalar,then:1). xa is a vector in the direction of a2). xa is a vector collinear to a3).xa and a have independent directions4).none of these |
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Answer» Option 1 is CORRECT ANSWER SINCE multiplying scalar quantity with a VECTOR quantity only change its MAGNITUDE. |
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| 44. |
Please solve this Questions (I) and (ii) |
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Answer» ACCELERATION = 20 m/s (II)= 2.5 |
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| 45. |
Write a mathematical formula for calculating force |
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Answer» Hey here is your ANSWER |
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| 48. |
Among common salt camphor sugar and sand which is sublimate |
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Answer» Sublimation is the change of state of a solid DIRECTLY to gas and a gas directly to a solid. |
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| 49. |
Can anyone give me the answer of these 2 questions please |
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Answer» Both the questions involve a common concept, and we will see it first. Situation: A ball of mass m moving with velocity v collides with another identical ball of same mass kept at rest. What will be the final velocities of the balls? Our data: Mass of both balls = m Initial Velocity of ball 1 = Initial Velocity of ball 2 = 0 Final Velocity of ball 1 = Final Velocity of ball 2 = From Law of Conservation of Momentum, we have: We are also assuming the collision to be elastic. This means that Kinetic Energy is conserved. But Ball 1 hit a stationary ball (Ball 2). The stationary ball must have started moving. So So, This means that, When Ball 1 moving with velocity v collided with another identical ball, Ball 2, which was at rest, then the velocities of Ball 1 and Ball 2 got exchanged. That is, now Ball 1 comes to rest, and Ball 2 starts to move with velocity v. So, we will use this simple concept: When two identical objects collide, their velocities get exchanged. [This is the general statement, and is valid even when both objects are moving] ___________________________ Question 1: A particle of mass 0.1 kg moving with a speed v collides with another identical particle at rest. As we KNOW, velocities will get exchanged. So, after collision, Particle 1 comes to rest, and the second particle starts moving. The kinetic energy of this particle is GIVEN as 0.2 joules. So we have: In a perfectly elastic collision, no kinetic energy was lost. So, the speed v of initial particle is transferred to the second particle. Thus, we will get the minimum possible value of v. In a perfectly inelastic collision, loss of kinetic energy is maximum. So, when speed of first particle is v, the speed of each particle after collision will be LESS than v. In this case, for the energy to equal 0.2, more initial velocity will be required. So, perfectly inelastic collision will give maximum value of v. So, the answer we obtained just now is Option (1) Minimum value of v is 2 m/s. Let us also calculate the Maximum Value of v, for which we require Perfectly Inelastic Collision. Law of Conservation of Momentum states: Also, since coefficient of restitution is zero, we have: Putting it in (1), we have: Since final kinetic energy is 0.2 joules, we have: This is the maximum possible value of v. To Summarize, we have: Answer stands at Option (1) ___________________________ Question 2: This is an interesting question, which can be solved LOGICALLY by the Situation we solved initially. A ball is moving with velocity v. It collides with the Ball 1 among the group of five balls. By the result of our Situation, we know that the initial Ball will come to rest, and Ball 1 will ACQUIRE a velocity v. But Ball 2 is present immediately next to Ball 1. Ball 1 collides immediately with Ball 2. Ball 1, which momentarily had a velocity, now again comes to rest, and Ball 2 now acquires the velocity v. The same thing happens for other balls. They momentarily gain velocity v, but immediately collide and again come to rest. In this way, the energy keeps on transferring from Ball 1 to Ball 2, and so on till Ball 5. There is no obstruction in the path of Ball 5. Thus the Ball 5 continues to move with its velocity v. All other balls are now at rest. So, overall, Energy is sequentially transferred from the initial ball to Ball 5. Thus, the Answer is Option (3) Ball 5 will move with velocity v, rest all balls will come to rest |
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| 50. |
Line integral of electric field |
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Answer» The multiplication of electric field and the path length gives LINE integral of electric Field. |
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