Saved Bookmarks
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 magnetic dipole? |
|
Answer» Answer: A magnetic DIPOLE is the limit of either a closed loop of electric CURRENT or a pair of poles as the SIZE of the source is REDUCED to zero while KEEPING the magnetic moment constant. It is a magnetic analogue of the electric dipole, but the analogy is not perfect. PLEASE MARK AS BRAINLIST AND FOLLOW ME. |
|
| 2. |
Define some important terms with respect to a mirror |
| Answer» | |
| 3. |
An empr truck weight 4000 NEWTON.It engine can produced a maximum acceleration of 1m/s.If truck loaded 2000NEWTON,find the maximum acceleration the engine can produce |
|
Answer» a =1.5 m/s² Explanation: F=m*a 4000=m*1 m=4000kg if TRUCK loded with 2000N =6000N then F=m*a 6000=4000*a a= 6000/4000 a =1.5 m/s² |
|
| 4. |
The distances covered by a particle thrownin a vertical plane, in horizontaldirections at any instant of time x=3t and y=4t - 4t^2. The range of theparticle |
|
Answer» Explanation: h= U sinQ t +1/2 gt^2 R= u cosQ t usinQ=4 - 1 u cosQ=3 -2 division of 1 and 2 tanQ= 4/3 Q = 53 u= (usinQ^2 + ucosQ^2) ^1/2 u= 5 R= u^2 sin2Q/g R= 3.34 m |
|
| 5. |
TroughQ.B An object of height 5m is placedLat a distance of 2.8cm in puntof a mirror. Its image is foundat the same distance where it ispllanted Answer the followingquestions:a. What is the type of the mirror?And concave miunebo Wuite the characteristics of imagepromed in the mirror?con throughut proveAnex |
Answer» # PLEASE MARK me as BRAINLIST...........on my ANSWERS.............# |
|
| 6. |
A truck is travelling 21 m/s and accelerates uniformly at 2.5m/s²1. What is the trucks velocity after 10 seconds?2. How long does it take the truck to reach 100 m/s? |
|
Answer» U- 21m/s a- 2.5m/s t- 10s v-? I)v=u+at v=21+2.5×10 v=21+25 v=46m/s ------------------------------------ |
|
| 7. |
On a smooth table her place to blocks in contact a horizontal force of 5 newton is applied on 20 kg block as shown state by word for this block press the 10 kg block if the above force is applied on the other side of the time kg blog then what was the 20 kg block will press the 10 kg block |
|
Answer» Answer: Given the force and the mass, we can get the ACCELERATION. Force = mass × acceleration The mass = 20kg The force = 5 N F = ma 5 = 2a a = 5/2 a = 2.5 m/s² The BLOCK accelerates from rest at an acceleration of 2.5 m/s²Hope it will HELP you dear friend... |
|
| 8. |
Which force with iron to be attracted by magnet |
Answer» Hey DUDE here is your Answer------------------------⏮️❣️❣️❣️❣️❣️**IRON CAN BE ATTRACTED BY THE MAGNET DUE TO MAGNETIC FORCE .............. ❣️❣️hope it helps you ❣️❣️ |
|
| 9. |
Two particles of mass 200 g each are placed at a separation of 10 cm. Assume that the onlyforces acting on them are due to their gravitational attraction. Find the acceleration of each whethey are allowed to move. |
|
Answer» the only FORCE ACTING on it is GRAVITATIONAL force so it's ACCELERATION will be 10m/s^2 or 9m/s^2 |
|
| 10. |
The force of friction is greater if a ........ Surface is involved |
|
Answer» Coarse or Rough Hope it helps If the answer is HELPFUL PLEASE MARK it as the BRAINLIEST |
|
| 11. |
Q.can we use parallel connection in mobile charger to charge one or more mobile from that charger? |
|
Answer» Answer: YES we USE parallel CONNECTION in mobile charger to charge ONE or more mobile from that charger |
|
| 12. |
Which of the two will dissolve more sugar cold water or warm water ?why? |
|
Answer» Explanation: Warm water will dissolve more SUGAR then cold water .Because when we HEAT water then the molecules in water gain energy due to gain energy the molecules move FASTER in warm water. hope it help mark as brainlist plz |
|
| 13. |
What is conservation of momentem |
|
Answer» Conservation of momentum is a fundamental LAW of PHYSICS which states that the momentum of a system is constant if there are no EXTERNAL FORCES acting on the system. It is embodied in Newton's first law (the law of inertia). Hope this helps you. |
|
| 14. |
13. If the gravitational force had varied as r 2 insteadof r-2. the potential energy of a particle at adistance from centre of earth would beproportional to(1)r-1(2) r-5/2(3)r-3/2(4)r-2 |
|
Answer» Answer: None of the given OPTION is correct. The correct answer is Explanation: The Gravitational force The gravitational force on the particle at r distance from the surface of the EARTH is given as
In that case, |
|
| 15. |
the diameter if a sphere is 2.14cm.calculate the volume if the sphere to the correct number of significant figures. |
| Answer» | |
| 16. |
The ......the concentration of an ion in the solution, the greater is theconductivity of the solution. |
|
Answer» The more the concentration of an ION in the SOLUTION, the GREATER is the conductivity of the solution.. |
|
| 17. |
How do woolen garments keepus warm in winter |
|
Answer» wool is an insulator, it TRAPS air in it's layer that don't allow body HEAT to escape. thus,keeping up WARM. |
|
| 18. |
How motion and rest are interrelated to each other |
|
Answer» Answer:
hope it helps |
|
| 19. |
A pushing force of 50 N acts on a block at an angle of 30degree with horizontal.The respective horizontal and vertical components of force will be? |
|
Answer» horizontal component = 25 N vertical component = 25√3 N = 43.3 N Explanation: PLEASE MARK IT AS A BRAINLIEST ANSWER And ALSO tell me is my answer correct or ain't .....please |
|
| 20. |
A car is travelling along a straight line and covers one-fourth of the totaldistance with a velocity of 10 m/s. The remaining distance is covered with avelocity of 5 m/s. Calculate the average velocity of the car. |
|
Answer» 200/35 = 5.71 m/s Explanation: PLEASE MARK IT AS A BRAINLIEST ANSWER |
|
| 21. |
Difference in scalar & vector product |
|
Answer» OK here is the difference. but PLZ MARK as BRAINLIEST . |
|
| 22. |
a concave lens of focal length 20cm forms and image at the distance of 10cm from the lens what is the distance of the object from the lens |
|
Answer» Answer: GIVEN f = - 20 cm, (sign convention) , v = - 10 cm (∴ image FORMED by CONCAVE LENS is virtual) By using lens formula, or u = - 20 Thus the object is placed at 20 cm from the concave lens |
|
| 23. |
Difference between sound wave and light wave? |
|
Answer» Answer: 1) SOUND WAVE is the wave of sound and LIGHT wave is the wave of light. 2) There SPELLING are not same. |
|
| 24. |
UIUIUJITIVTA particle moves with uniform acceleration alongstraight line AB.Its velocities at A and B are 2m/sand 14 m/s respectively.M is the mid point of AB.Ifthe particle takes 2 seconds to go from A to M,then time taken to travel from M to B is(1) 1s(2) 25(3) 3s(4) 45 |
|
Answer» Answer: |
|
| 25. |
Find the momentum of a ball of mass 500 gram moving at 3 metre per second |
|
Answer» mass of ball in KG =500g/1000=0.5kg |
|
| 26. |
If an object weighs 637 N on the earth, then whatwill be the weight of that object on Saturn wheregravity is 9.6 m/s2. (Take g on earth = 9.8 m/s) |
|
Answer» Answer: 624 Explanation: F=ma then SOLVE it for both planet FIRSTLY find mass of OBJECT with the help of GRAVITY of earth and force on earth then mass MULTIPLY by gravity of saturn |
|
| 27. |
What is law of conservation of momentum? |
|
Answer» hi Explanation: it states that ENERGY can neither be created nor be destroyed is know as LAW of CONSERVATION |
|
| 28. |
An object located 32 cm infront of lens froms And Imageon a screen 8 cm behind Thelens Find The focal lengthMagnification is the lens Conservingon Diveazing |
|
Answer» Answer: 1/U + 1/v = 1/f 1/f = (v + u)/u*v f = u*v/(v + u) f = 8.03cm*32.5cm/(32.5cm + 8.03cm) f = 6.439057488cm f = 6.44cm m = v/u m = 8.03cm/32.5cm m = x0.247076923 m = x0.247 v = image distance f = focal length m = magnification Explanation: hope it helps you plz MARK the BRAINLIEST ♡✌ |
|
| 29. |
Is the energy spent on thinking or talking a kind of work give reason for your answer |
|
Answer» Answer: yes it is a type of a work Explanation: I will START with the simple one first When you are talking you spent energy DISPLACING your tongue, vocal chords etc. And you displace them by applying force When you are thinking the chemical energy leads to force on the salts creating an IMPULSE or a stimulus and that impulse is carried due to displacement of particles (These answers are a LONG short so might not be correct as your question connects physics and NEUROSCIENCE which is a tough spot to handle) |
|
| 30. |
What is parameter ? |
|
Answer» Parameter, in mathematics, a variable for which the RANGE of POSSIBLE values identifies a collection of distinct cases in a problem. Any equation expressed in terms of parameters is a parametric equation. ♡♡♡♡♡ |
|
| 31. |
CaA Particle carrying charge of 2e falls through a Potential difference of 3.ovCalculate the energy acquired by it? |
|
Answer» ANSWER: Charge on particle = 2e Potential difference = 3.0 V Energy? By applying FORMULA 1/2 mv²= QV K. E = 2e×3 = 2×1.6×10^-19×3 Energy = 9.6×10^-19J Hope you get it CLEARLY, Thanks Explanation: |
|
| 32. |
Give the non-SI units that are sometimes used for volume |
|
Answer» Answer: LITRE is the non-SI UNITS that are sometimes used for VOLUME. |
|
| 33. |
State two examples when a force acting on a body does not do any work |
|
Answer» Answer: 1) pushing on a wall. 2) pushing a object that is UNABLE to MOVE. |
|
| 34. |
Assuming consatant retardation of metal ball moving inside water thr ball loses 25% of its speed in 35 cm in a straight line . How much further will it travel before stopping ? |
|
Answer» <P>Answer: Explanation:Let initial VELOCITY of bullet is u , A/C to question, bullet loses25% of its speed while traveling INSIDE a wooden blocks. means final velocity = u -25 % of u = u - u/4 = 3u/4 Now, use formula, v² = u² + 2aS Here, v = 3u/4, S = 14cm ∴ (3u/4)² = u² + 2a(14) ⇒9u²/16 - u² = 28a ⇒ - 7u²/16 = -28a ⇒ a = -u²/64 Let total distance covered by bullet before stopping is x = 14 + P where P is distance covered by bullet after covering 14cm. Now, use formula, v² = u² + 2as here, v = 0, a = -u²/64 ∴ 0 = u² - 2(u²/64)x x = 32 cm So, P = 32 - 14 = 18cm HENCE, bullet further travel 18cm before stopping. |
|
| 35. |
Please answer the question with complete explanation |
|
Answer» Answer is a So dimensionaly F = energy /LENGTH = hc/dsquare |
|
| 36. |
The value of capital g in the law of gravitation is |
|
Answer» Is 9.8 and ALSO we TAKE 10 as its round figure. pls mark as BRAINLIEST. |
|
| 37. |
How we drive Newton's second law of motion? |
|
Answer» GO through the ATTACHMENT DEAR |
|
| 38. |
Find equivalent resistance between points:A & DA & CA & B |
| Answer» | |
| 39. |
Example 23 A car traveling at 72 km/h overtakes anothercar traveling at 54 km/h. Assuming each car to be 5.0 mlong, find the time taken during overtake and the total roaddistance used for the overtake. |
|
Answer» HI mate road distance covered is 5 metre Explanation: Time = d*s and distance = 5 metre speed = 72 - 54 = 18km/hr So , Time = 18*5 = 60mins and 60mins = 1 hour |
|
| 40. |
what happens if the gas produced by the reaction between vinegar and baking soda is passed through limewater. explain |
| Answer» LIME WATER TURNS MILKY | |
| 41. |
a train is moving with velocity 30 metre per second comes to rest after covering a distance of 2800 metre calculate its acceleration |
|
Answer» Answer: -0.16 m/s Explanation: Use EQUATION of motion a = (v² - u²) / (2S) = (0² - 30²) / (2 × 2800) = -900/5600 m/s² = -0.16 m/s Negative SIGN indicates that it's RETARDATION. |
|
| 42. |
What is the maximum resistance make available using two 10ohm resistance |
| Answer» 20 OHM when CONNECTED in a SERIES | |
| 43. |
Find the vector that should be added to the sum ofFind the vector that should be added to the sum of (21.59 • )na (año 21-44) |
|
Answer» Explanation: bbnn |
|
| 44. |
Find the density of cuboid of dimensions 3 cm x 5cm x 7cm and having mass 1 kg in SI system. |
|
Answer» Volume=length*BREADTH *height 3cm=3/100m=0.03m 5cm=5/100m=0.05m 7cm=7/100m=0.07m Volume=0.03*0.05*0.07 =0.000105 Density=mass/volume 1/0.000105 =1*1000000/0.000105*1000000 =1000000/105 9523.8kg/m³ |
|
| 45. |
2 balls have masses of 50gm and 100gm respectively and they are moving along the same line in the same direction with velocities of 3m/sec and 1.5m/sec respectively. They collide with each other and after collision, the 1st ball moves with a velocity of 2.5m/sec. Calculate the velocity of the other ball after collision. |
|
Answer» Answer: 1.75m/s Explanation:let U1 and u2 are VELOCITY of balls before collision..Let after collision velocity of TWO balls are v1 and v2 . From linear MOMENTUM conservation we get m1u1+m2u2=m1v1+m2v2 m1 =50gm,u1=3m/s , v1=2.5m/s Me=100gm, u2=1.5m/s, be=?? 50×3+100×1.5=50×2.5+100×v2 150+150=125+100v2 300=125+100v2 175=100v2 V2 =175/100 V2 = 1.75 Hence velocity of 2nd particle after collision is 1.75m/s |
|
| 46. |
Which of the following has least shearing resistance a) clay beds b) salter rocks c) well cemmented coaffers and d) sandstone |
|
Answer» CLAY BEDS have LEAST SHEARING RESISTANCE. |
|
| 47. |
Derive the expression for the maximum speed where the road is NOT banked.PLZ ANSWER IT 2MORROW IS MY EXAM |
|
Answer» Answer: ❤️❤️hello dear here is your answer mark it BRAINLIST OK and follow me... :)☺️☺️❤️❤️ |
|
| 48. |
Explain the term fundamental unit derived unit supplementary unit |
|
Answer» Answer: fundamental UNITS :- it is the unit of basic or fundamental quantity. derived unit :- it is the unit of derived quantity. basic or fundamental quantity:- it is ✓seven in NUMBER and not derived by any of unit . it is basic like CURRENT ,mole, temperature,TIME, mass, length, luminous intensity. √derived unit :- it is derived from fundamental or basic units. it is much more in number like weight, ACCELERATION, velocity ,etc.
|
|
| 49. |
A and B are two non zero vectors. if |vector A × vector B| = vector A × vector A, what is the angle between vector A and B? |
|
Answer» The ANGLE between a and b is 0 degrees pls MARK as brainliest |
|
| 50. |
an object is projected with a velocity of 20m/s making an angel 45° with the horizontal.the equation of the trajectory is y=Ax-bx^2 ,where y is height and x is horizontal distance.then A^2/4B is? |
|
Answer» a particle is PROJECTED with a velocity U m/s at an angle θ° with horizontal.then equation of TRAJECTORY is given by here given, θ = 45° and u = 20 m/s and g = 10 m/s² now compare it with y = Ax - Bx² then, A = 1 and B = 1/40 so, A : B = 1 : 1/40 = 40 :1 |
|