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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. |
Explain that what happened if light ray incident on prism explain briefly with diagram |
| Answer» ANSWER is given from my CLASS book means class 8 booksee the topic with blue TICK MARK | |
| 2. |
Distance=10m time=8 sec find avg speed,avg velocity |
| Answer» TION:GIVEN, d = 10m t = 8sNow, AVG SPEED = total distance / time taken= 10/8 = 5/4 m/s Now , avg velocity = total displacement / time taken= 10 / 8 = 5/4 m/ sHope it HELPS,.. | |
| 3. |
8N 6N Find the net forceacting on body in opposite direction Showing in the adjacent figure. |
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| 4. |
Paano ko ma ipag mamalaki ang kultura o tradisyon |
| Answer» KYA ha ye YAR please answer me please please FOLLOW me please MARK at BRAIN list please please | |
| 5. |
Measure of inertia in translatory motion is |
| Answer» RECALL that for TRANSLATIONAL motion an object with a large amount of inertia has a GREATER momentum than an object with a SMALL amount of inertia, both moving at the same speed. MASS, m, is the measure of inertia in translational motion.HOPE IT HELPFUL FOR U (◍•ᴗ•◍)❤(◕ᴗ◕✿)(ʘᴗʘ✿)Explanation:MARK AS BRAINLIEST ✌️❤️ (◕ᴗ◕✿)(ʘᴗʘ✿)(◍•ᴗ•◍)❤ | |
| 6. |
A car acquires a velocity of 36 Km/h in 10s starting from rest . Calculate :(i) the acceleration.(ii) the average velocity and (iii) the distance travelled in this time. |
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Answer» →Initial velocity of the car = 0(as it starts from rest)→Final velocity of the car = 36km/h→Time TAKEN = 10sTo find:-Firstly, let's convert the final velocity of the car from km/h to m/s.=>1km/h = 5/18m/s=>36km/h = 5/18×36=>10m/sBy using the 1st equation of motion,we get:-=>v = u+at=>a = v-u/t=>a = 10-0/10=>a = 1m/s²When a body is moving with uniform ACCELERATION,then average velocity of the body is:-=>Vₐᵥ = u+v/2=>Vₐᵥ = 0+10/2=>Vₐᵥ = 5m/sNow,by using the 2nd equation of motion,we get:-=>s = ut+1/2at²=>s = 0(t) + 1/2×1×(10)²=>s = 0.5(100)=>s = 50mThus:-→Acceleration of the car is 1m/s².→Average velocity of the car is 5m/s.→Distance travelled by the car is 50M. |
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| 7. |
) The statement "It should be of convenient in size and accepteduniversally" related to which one ofthe following? |
| Answer» SORRY but i don't KNOW the answerMaybe NEXT SUBJECT QUESTION ☺️ | |
| 8. |
4) Al An object is thrown vertically upward with anonzero velocity. If gravity is turned off atthe instant the object reaches the maximumheight, what happens?1) the object continues to move in a straightline2) the object will be at rest3) the object falls back with uniform velocity4) the object falls freelyWhich law of Newton is called the In |
| Answer» TION:ANSWERAccording to Newton's FIRST law, since, no NET EXTERNAL force is acting, the body will remain at its state of motion. Since the body comes at rest at its highest point, it will remain at rest | |
| 9. |
when 12 v battery is connected across an unknown resister there is a current of 2.5 mA in a circuit . find the value of the resistance of the resistor |
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Answer» :Voltage of BATTERY = 12 voltCurrent flow = 2.5 mAWe have to find resistance of the resistor.★ Resistance of resistor can be calculated by using concept of ohm's lawAs per ohm's law : At constant temperature, current flow in a conductor is DIRECTLY proportional to the APPLIED potential difference.V ∝ IPutting proportionality constant,V = I × RR DENOTES resistanceV denotes voltageI denotes current★ Conversion :• 1000 mA = 1 A• 2.5 mA = 2.5/1000 = 0.0025ABy substituting the given values,➠ V = I × R➠ 12 = 0.0025 × R➠ R = 12/0.0025➠ R = 4800 Ω |
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| 10. |
Weight is a ____ (a) mass (b) energy (c) force (d) none of these |
| Answer» ENERGY .. HOPE it HELPS ................... | |
| 11. |
Why two magnetic lines of force intersect each other? Identify the poles of the magnet in the given figure. |
| Answer» EITHER NORTH and north or SOUTH and south | |
| 12. |
An electric dipole is placed inside uniform electric field. When it is rotated from unstable equilibrium to stable equilibrium in a uniform electric field, its potential ..................... . |
| Answer» TION:POTENTIAL REMAINS same potential ENERGY DECREASES | |
| 13. |
Which statement is correct for a mixture of acetone and water is: (a) Heterogeneous mixture in which acetone floats over water.(b) Homogeneous mixture showing particles of acetone on passing light(c) Heterogeneous mixture but appears to be homogeneous.(d) Homogeneous mixture and does not form separate layers. |
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Answer» and WATER are two MISCIBLE liquids and can be separated by distillation (simple) So it is (d) |
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| 14. |
Tara rode her bike very slowly to the top of a big hill. Then she coasted back down the hill at a much faster speed. The distance from the bottom to the top of the hill is 3 kilometers. It took Terri 15 minutes to make the round trip. What was her average speed for the entire trip? Show your calculation. Is speed a vector? Why or why not? |
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Answer» Speed=45Explanation:distance×time=speed |
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| 15. |
Find I:pls do answer it correctly |
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| 17. |
calculate the equivalent resistance between the points A and B of the circuit as shown in the figure |
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Answer» te the equivalent resistances between the POINTS AandB of the circuits shown in (FIG. 2.33)(B). Further, R1(=24Ω)and6Ω are in PARALLEL between the points AandB. Thus, effective resistance between AandB, i.e., R=24×624+6Ω=4.8Ω. |
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| 18. |
Abus descerease its speed of from 80 km/h to to knlh is 5 sec. Findthe acceleration of the bus? |
| Answer» TION:APPLY a=v-u/tyou will GET it | |
| 19. |
Among the following which is not example of central force |
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| 20. |
Acha ji asa hota ha |
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Answer» mtlab............ ....... |
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| 21. |
Define semiconductor |
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Answer» a solid SUBSTANCE that has a conductivity between that of an INSULATOR and that of most metals, either due to the ADDITION of an impurity or because of temperature effects. Devices made of semiconductors, notably SILICON, are essential components of most electronic CIRCUITS |
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| 22. |
Term for the Power of a lens |
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Answer» hope this helps buddy!the term for POWER of a lens is CALLED Dioptre (D) whose SI unit is METER |
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| 23. |
Calculate the pressure when a force of 268 N is exerted on an area of 24 m2. |
| Answer» TION:PRESSURE = force/area= 268/24= 11.16667N/m2= 11.16667pa | |
| 24. |
The linear magnification produced by a spherical mirror is -1. Then the image formed is: a) real and magnifiedb) real and of the same size of the objectc) virtual and of the same size of the objectd) virtual and erect |
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| 25. |
name the rule for finding direction of magnetic field produced by a straight current carrying conductor. |
| Answer» HOPE this ANSWER HELPS BUDDY | |
| 26. |
1 cms-² = ..........m/s² |
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Answer» 1 cm/s² = 0.01 m/s² EXPLANATION:MEASUREMENT that can be USED to convert cm/s² to m/s², among others. |
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| 27. |
If the lengths of two pendulum are in the ratio 9:16 find the ratio of their time period |
| Answer» HOPE this ANSWER HELPS you BUDDY! | |
| 28. |
Mention Define SpeedАcalculatecatcoversataa distance of tout in thatspeedएक कार कवर ए डिस्टेंस ऑफ 75 किलोमीटर इन टू कैलकुलेट इट्स स्पीड |
| Answer» FAST MOVEMENT HOPE it HELPS you | |
| 29. |
A cyclist goes around a circular track once every 2 minutes. If the radius of the circular track is 105m, then his speed is ……. |
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Answer» :Radius of CIRCULAR path = 105 mTime TAKEN by cyclist to complete a round = 2 minutes2 min = 2 × 60 = 120 sWe have to find SPEED of cyclist★ Speed is defined as the ratio of distance travelled to the time taken.speed = distance/timeIt is a scalar quantity having only magnitude.It can't be NEGATIVE or zero.SI unit : m/sDistance covered by cyclist after completing one round of circular path will be equal to perimeter of circle. (d = 2πr)➝ v = 2πr/t➝ v = 2(3.14)(105)/120➝ v = 659.4/120➝ v = 5.5 m/s∴ speed of cyclist is 5.5 m/s. |
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| 30. |
प्रिज्म द्वारा किसी समतल तरंगाग्र के परावर्तन तथा अपवर्तन को समझाइए |
| Answer» THANK you for givingExplanation:EXPLAIN explain this MARATHI QUESTION | |
| 31. |
if the accleration of a particle is constant in magnitude but not in direction,what type of path is followed by the particle |
| Answer» VELOCITY is FOLLOWED by the particleExplanation:PLEASE MARK as BRAINLIEST | |
| 32. |
A homogeneous substance which contain only one kind of particle |
| Answer» TYSON and asima are the advantages that 6we and 6asima have 6to 6with 6and 6and 6and 6and 6and 6the 6way 6and 6the way to 66get 6and 66the 6day 626of 6the 6lord and the meaning in the lord shall come to GET the lord to make the 1909 lord who will be able and asima Explanation:sambit is the best in FREE of charge for the FIRST two hours and the rest is in the top TEN and it will take a while to get the best of it is how it is going on and what are you | |
| 33. |
A block dimensions 20 cm , 10cm and 5cm of weight 6N is made to lie on the table with sides 20cmand 10cm. Find out the pressure exerted Explain in detail |
| Answer» DAVID and I are working on the occasion of your 3 and the fact that we have not been able to GET the funds in yet as we have already MADE the PAYMENTS for EXAMPLE. | |
| 34. |
Which is dimension less quantity |
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Answer» In dimensional analysis, a dimensionless quantity is a quantity to which no physical DIMENSION is assigned, also known as a BARE, pure, or SCALAR quantity or a quantity of dimension ONE, with a corresponding UNIT of measurement in the SI of the unit one (or 1), which is not explicitly shown. |
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| 35. |
Write four applications of law of interia |
| Answer» OBJECTS in motion stay in motion or want to, just like these examples. SEAT belts tighten in a car when it stops quickly. Men in space FIND it more DIFFICULT to stop moving because of a lack of gravity acting against them. When playing football, a player is tackled, and his head hits the ground. | |
| 36. |
What did you feel after you doing the vigorous activity? |
| Answer» HAPPY I WANT POINTS because I m doing my EXAM | |
| 37. |
Who invented gramophone |
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Answer» erliner is the ANSWER |
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| 38. |
A cluster of several molecules isknown as |
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Answer» In chemistry, an atom cluster (or simply cluster) is an ENSEMBLE of BOUND atoms or molecules that is intermediate in SIZE between a simple molecule and a nanoparticle; that is, up to a few nanometers (nm) in diameter. The TERM microcluster may be used for ensembles with up to couple dozen atoms. |
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| 39. |
...........gives us an Idea of how fast or how slow does light travel in a medium A) Angle of incidence B) Angle of refraction C) Thickness of light D) Refractive index |
| Answer» REFRACTIVE IndexExplanation: | |
| 40. |
Find the total energy of a body of 5 kg mass, which is at a height of 10 m from the earth and falling downwards with a velocity of 20 m s_2.( g=10 m s_2) plzz solve it fast and help me out |
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Answer» the Body = 10 kg. HEIGHT = 10 m. Acceleration due to gravity = 9.8 m/s². Using the FORMULA,POTENTIAL Energy = mgh = 10 × 9.8 × 10 = 980 J. (b). Now, By the law of the conservation of the Energy, Total AMOUNT of the energy of the system REMAINS constant. ∴ Kinetic Energy before the body reaches the ground is equal to the Potential Energy at the height of 10 m. ∴ Kinetic Energy = 980 J. (c). Kinetic Energy = 980 J. Mass of the ball = 10 kg. ∵ K.E. = 1/2 × mv² ∴ 980 = 1/2 × 10 × v² ∴ v² = 980/5 ⇒ v² = 196 ∴ v = 14 m / s. |
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| 41. |
A car initially at rest, picks up a velocity of 72 kmph in 1/4 minutes The distance covered by car is.. |
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Answer» 72 KMPH = 72×5/18 m/s = 20m/s1/4 minutes = 15 SDISTANCE covered = 20 ×15=300m = 0.3km |
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| 42. |
5) What is the approximate size of molecule of matter?10-⁶m10-⁸ m10-⁹m10-⁵mcorrect one |
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Answer» c.Explanation:MATTER is MADE up of MOLECULES which are very SMALL in SIZE (~10-9 m) |
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| 43. |
Write any 2 situations of gravitional force observed in day to day life |
| Answer» THINGS which we throw up will return BACK againExplanation:HOPE it HELPS | |
| 44. |
Electrolysis is the process in which a chemical reaction takes place at the expense of |
| Answer» REDOX REACTION is the ANSWER | |
| 45. |
You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 15151515 lb and was traveling eastward. Car B weighs 11251125 lb and was traveling westward at 47.047.0 mph. The cars locked bumpers and slid eastward with their wheels locked for 22.522.5 ft before stopping. You have measured the coefficient of kinetic friction between the tires and the pavement to be 0.7500.750. How fast (in miles per hour) was car A traveling just before the collision? (This problem uses English units because they would be used in a U.S. legal proceeding.) |
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| 46. |
Body with mass m moving with uniform speed v along circle of radius r thrn change in velocity is |
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| 47. |
Please its urgent pls pls pls pls pls and don't write useless answers just for points |
| Answer» 20M EXPLANATION:PLEASE MARK me as BRAINLIST | |
| 48. |
B. (0) Prove that weight of an object on the moon is 1/6 th of itsweight on earth. (4) |
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Answer» The mass of moon is 1/100 times and its radius 1/4 times that of EARTH. As a RESULT, the gravitational attraction on the moon is about one sixth when compared to earth. HENCE, the weight of an object on the moon is 1/6th its weight on the earth. |
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| 50. |
If force of F=3i+2j-3kn acting on a body, so that if gets velocity of v=6i-3j+2k in a time, then the power of that body is |
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Answer» Here, r1=3i+2j−6k and r2=14i+13j+9kSo, DISPLACEMENT, (r2−r1)=(14i+13j+9k)(3i+2j−6k)=11i+11j+15kHence, WORK done=F.s=(4i+j+3k).(11i+11j+15k)=44+11+45=100J |
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