InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 5601. |
An empty density bottle has a mass of 100g when it is full with water the mass is 200g, but when filled with a given liquid the mass becomes 300g, find: (i) relative density (i) the density of liquid if the water is 1.0g/cm³ |
| Answer» SORRY BRO PLEASE LIKE and FOLLOW me | |
| 5602. |
A solid weighs 1.5kgf in air and 0.9kgf in a loquid of density 1.2*1000kg/m^-³ |
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Answer» tion:plz mark me as the brainliest and follow me ALSO plz .the ANS is in the above photo so CLICK on that |
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| 5603. |
A bus travels 20 km in 40 mins. Calculate the speed PLZ SEND FAST PLZ PLZ PLZ |
| Answer» DISTANCE / TIME = 20 / 40 = 1/2 SEE the IMAGE | |
| 5604. |
A body starts from rest and undergoes a constant acceleration of 4m/sec . Find it's displacement after 4seconds . Plz answer with explanation. |
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Answer» ▪ Initial speed = ZERO (i.e. rest)▪ Acceleration = 4m/s²▪ Time INTERVAL = 4sTo Find :▪ Displacement of body after the given interval of time.Concept :☞ Since, acceleration has said to be constant throughout the motion, we can easily apply equation of kinematics to solve this type of questions.☞ SECOND equation of kinematics :☆ S = ut + (1/2)at²S denotes displacementu denotes initial velocityt denotes timea denotes accelerationCalculation :→ S = ut + (1/2)at²→ S = (0×4) + (1/2)(4)(4)²→ S = 0 + (2×16)→ S = 32M |
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| 5605. |
A bus travels 20km in 40 min. Calculate its speed |
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Answer» distance/time 40/20=2km/h |
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| 5606. |
An object has density 13600kg/cubic metre. Express the density in SI unit. i.13600g/ccii. 13.6g/cciii. 1360g/cciv. 1360000g/cc |
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Answer» In S.I. UNIT = 13600 kg/m³In C.G.S. unit = 13.6 g/ccExplanation: itself is in S.I. unit.As FAR as your OPTIONS are CONCERNED,REMEMBER this is not an S.I. unit, this is C.G.S. unit. |
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| 5607. |
The table mats are made of plasticsand cork. Give reasons.please tell the answer quickly |
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Answer» because they are not the CONDUCTOR of heatExplanation:hope I HELPED you PLEASE mark me as BRAINLIST |
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| 5608. |
3. Which of the following process is used to separate salt from sea water- i. Condensationii. Liquifactioniii. Evaporationiv. Freezing |
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| 5609. |
2. Liquid mercury appears to be very dense, it is because of - i. the strong cohesive forceii. the strong adhesive forceiii. less volumenone of these |
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Answer» heavy, silvery d-block element, MERCURY is the only metallic element that is liquid at STANDARD conditions for temperature and PRESSURE; the only other element that is liquid under these conditions is the halogen BROMINE, though metals such as caesium, gallium, and rubidium melt just above room temperature. HOPR ITS HELP FOR YOU✔✔ |
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| 5610. |
Liquid mercury appears to be very dense, it is because of - |
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Answer» A heavy, silvery d-block element, mercury is the only METALLIC element that is liquid at standard conditions for temperature and PRESSURE; the only other element that is liquid under these conditions is the halogen BROMINE, though metals such as CAESIUM, gallium, and rubidium MELT just above room temperature. |
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| 5611. |
What is the cause of heat generation in the following situations: (a) We apply brakes on our fast moving car.please tell the answer quickly |
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Answer» akes are APPLIED on our fast moving car, the brakes produce heat DUE to friction. People often jump up and down in cold weather to feel warm because the BODY produces heat while jumping, this heat KEEPS them warm. When we APPLY brakes in a moving car heat produces due to friction |
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| 5612. |
the necessary requirement for a fuse wire is a. conductor with low melting point b. conductor with high melting point c. insulator with low melting point d.insulator with high melting point |
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| 5613. |
What kind of motion a drop tower represents ? pls tell in about 50 to 60 words.irrelevant answers will be reported. |
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Answer» periodic motion and circular motion is YR answer because all the hands of the clock move in a circular path and REACH the initial POINT after EVERY 12 hours |
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| 5614. |
A car starts from point A, goes to B, C, D, E and then to F as shown in the diagram. The distance and displacement of the car respectively are:Hint DE=5.656 m |
| Answer» PLEASE SHOW the DIAGRAM | |
| 5615. |
2. Which of the following substances is not an atmospheric pollutant? A. Carbon monoxide B. Helium C. Oxides of nitrogen D. Sulphur dioxide No ryubbish answers please |
| Answer» B)EXPLANATION:FOLLOW me | |
| 5616. |
The process that results in corrosion of iron? |
| Answer» TION:Rusting of IRON REFERS to the formation of rust, a mixture of iron OXIDES, on the surface of iron objects or structures. This rust is formed from a redox reaction between oxygen and iron in an environment containing water (such as air containing high levels of moisture). | |
| 5617. |
WHAT IS KILOJOULE PER (KJ/KG) |
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Answer» Heya user...... ❤A KILOJOULE per kilogram (kJ/kg) is a decimal multiple of the SI derived UNIT of specific energy, heating value, energy CONTENT or HEAT of combustionper unit mass joule per kilogram. Thejoule per kilogram is equal to the useful energy released from onekilogram of fuel mass during its COMPLETE combustion.Hope it's helpful....... ☺ |
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| 5618. |
Where did all Antimatter go? |
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Answer» Er ❤️➡️But we exist, and THEREFORE something must have HAPPENED to allow matter to survive and antimatter to all but disappear. Scientists suspect that a TINY portion of matter—about one particle PER billion—survived from the early universe to create all the planets, stars and galaxies we see today..!!Hope it's helps U..☺️✌️ |
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| 5619. |
Please clear the basic concepts of chapter motion. |
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| 5621. |
How many formulas are there in motion chapter class 9th answer me all that formulas. |
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Answer» ll formulas from CHAPTER laws of motion for class 9 (PHYSICS)●speed = total distance travelled / TIME required.●VELOCITY = displacement / time.●(a) acceleration = change in velocity / time. (B) acceleration = a = FINAL ●velocity - initial velocity / time. ...●three equations of motion:- ...●rate of change of momentum = change in moment ■⬛✔Hope its help for you⬛✔✔✔MARK ME BRAINLIST✔✔ |
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| 5622. |
What is meant by miscible and immicible substances? Give two example of each. |
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Answer» tion:MISCIBLE liquids=liquids which INTERMIX completely for example water and ALCOHOL. immiscible=liquids which do not mix completely and floats on it for example water and oil. |
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| 5623. |
Liquids have low density as compared to gases |
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Answer» it is FALSE. LIQUIDS have HIGHER DENSITY COMPARED to gases.Explanation: |
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| 5624. |
A person throws a ball and catch it after a certain time. the displacement of the ball is (a)s=2t(b)s=vt(c)zero(d)2s=vt |
| Answer» DISPLACEMENT is ZERO because the PERSON choose the ball and catch it from where the ball goes up come BACK to that place so the displacement is zero | |
| 5625. |
Both distance and diplacement have different units True / false |
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Answer» yes both distance and diplacement have different unitExplanation:because distance is use to FIND TIME where displacement is used to find speed mark as brain LIST and FOLLOW me |
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| 5626. |
1. Draw a velocity- Time graph for uniform accelerated motion using the relation v= u + at. |
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Answer» Distance TRAVELLED = AREA under the LINE = UT + ½ (v-u)tBut acceleration = (v-u)/t and so (v-u) = at therefore:Distance travelled (s) = ut + ½ (v-u)t = ut + ½ [at]t = ut + ½ at2 |
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| 5627. |
a rectangular piece of wood measures 6cm , 5cm and 4cm has mass of 40 gm . what is the density of wood? Will it float or not float and water |
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| 5628. |
Watch the popular animated films Wall-E and UP. Write a short note/review highlighting the physics ideas/concepts you came across in the film. |
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| 5629. |
a car accelerates from rest at a constant rate alpha for some time after which it decelerates at a constant rate beta . If the total time is t prove that maximum velocity reached is v=alpha×beta×t/alpha+beta and total displacement is s=alpha×beta^2/2(alpha+beta) |
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Answer» don't no EXPLANATION:FOLLOW me and MARK as BRAINLIST |
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| 5630. |
The spring's extension isproportional to the____ fill the blank |
| Answer» ACT....................... | |
| 5631. |
Question 8. Convert into mole. (a) 12 g of oxygen gas (b) 20 g of water (c) 22 g of Carbon dioxide |
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Answer» b NUMBER is CORRECT....Explanation:GO through the indented application please MARK me as brain LIST |
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| 5632. |
The force of earth's gravity acting on a body is known as______ fill the blank |
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Answer» brazzersExplanation: |
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| 5633. |
22. A girl travels with a speed of 8 ms for 15 minutes. How much distance does she travel?[7200 m or 7.2 km] |
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Answer» she TRAVELS 7200m or 7.2km7200m is EQUAL to 7.2km both 7200m and 7.2 KM are CORRECTEXPLANATION: |
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| 5634. |
W Hot to do such things again. Why do you B. There's an extempore competition in your school. Which device will you use for timekeeping and why? |
| Answer» BHAI ak bat puchu JAB ma que puchu tab tul SARA Kha jata hoExplanation:#####1234567890(samagjao#123...ka matlab)bhaishab 1mahina bad que ans atatha I don't know.bhai BHUT gusa ata ha | |
| 5635. |
How long will a train take to travel a distance of 250km with a speed of 80kmh-1 |
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Answer» It will TAKE the TRAIN 3.125 hours.Explanation:SPEED = DISTANCE/ timeTherefore, TIME = distance/speed = 250/80 = 3.125 |
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| 5636. |
Distance between F1 and F2 is 20 cm. Find the power of the convex lens ? |
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Answer» What is the POWER of lens of focal LENGTH 20cm? so, 20 CM in metres= 20/100m=1/5 metres. power of a lens= 1/1/1/5=5 DIOPTRES........ therefore, P = 1/f meters |
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| 5637. |
A horse running along a circular track of radius 10 m completes one round in 50s. What is the distance covered and displacement? |
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Answer» above QUESTION , the following information is given - A horse running along a circular track of radius 10 m COMPLETES one round in 50s. We have to find the distance covered and the displacement of the horse.Solution - First let me DEFINE distance and displacement .Distance refers to the total length of the path covered between two points , whereas displacement is the shortest distance between the points . Here , .The horse runs around in a circle and completes one round , returning to the same point . As it returns to the initial point , the displacement becomes zero . Now ,The required distance travelled by the hose is the CIRCUMFERENCE of the path travelled .We have the following information - The radius of the track is 10 m.We know that - Circumference => 2. π r => 20 π metres .=> 20 × 3.14 metres=> 61.8 m So , hence the distance travelled by the horse is 61.8 metres . NOTE that the time given is superfluous here . |
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| 5638. |
Why does a moving charge creates a magnetic field ? |
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Answer» re suggested, a magnetic FIELD is produced whenever an electrical CHARGE is in motion. The SPINNING and orbiting of the nucleus of an atom produces a magnetic field as does electrical current FLOWING through a wire. The direction of the spin and orbit DETERMINE the direction of the magnetic field |
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| 5639. |
Can anyone solve this question |
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Answer» ll is drop from a height then it's initial VELOCITY(u) is zero and H is 20m , a= +g ,use 2ND equation of motion , H=ut+1/2at^2 20=1/2×10×t^2 , 4=t^2 then t is 2 sec . when BALL hit the ground it's velocity is v =? use 1st EQN of motion V=u+at , V= 10×2 then V is 20m/sec |
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| 5641. |
The size of the molecules is of the order ______ to______ meter |
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Answer» Don't KNOW.. EXPLANATION: |
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| 5642. |
What change will a force bring in a moving body? |
| Answer» TION:Force can bring the following changes: It can stop a moving body, move a stationery body, CHANGE shape of the body, alter the speed of the body, change the direction of MOTION of the body. | |
| 5644. |
0.5. Four children measure the length of a table which as about 2m. Each of them used different way to measure it.(a) Sum measured it with a half meter long thread.b) Gurmeet measured it with a 15-cm scale from her geometry box.C) Reena measured it using hand spam.(d) Salima measured it using 5-m long measuring tape.Which one of them would you get the most accurate length? Give reason for your answer. |
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Answer» (d) is most ACCURATE as exact measurements are given on the tape.Exact measurements are also given on the 15 cm scale but since it is so SMALL she would have to MEASURE the table a LOT of TIMES. |
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| 5645. |
What is avrage velocity? |
| Answer» TION:The average VELOCITY of an object is its total displacement divided by the total time taken. In other words, it is the rate at which an object changes its position from ONE place to another. Average velocity is a VECTOR quantity. The SI unit is meters per second. | |
| 5646. |
What is meant by net force acting on a body? |
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Answer» The net FORCE is the vector sum of all the forces that act UPON an object. That is to say, the net force is the sum of all the forces, taking into ACCOUNT the fact that a force is a vector and two forces of equal MAGNITUDE and opposite direction will cancel each other out.Explanation:hope you understood.pls mark as the brainliest ans ❤️❤️❤️...pls follow me... |
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| 5647. |
If the person is walking along a straight road, its motion is _____________. |
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Answer» uniform motion Explanation:A BODY is said to be in uniform motion if it travels EQUAL distances in equal intervals of time, no matter how small these time intervals may be. If we draw distance time GRAPH for uniform motion then it will be STRAIGHT line. |
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| 5648. |
APPLY YOUR LEARNING A Apoorva is not well and goes to a doctor who gives her a prescription of medicines. Apoorva takesthe cough syrup without properly measuring its quantity. On knowing this, her mother makes herunderstand not to do such things again. Why do you think her mother told her this? |
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Answer» she STOPED her so because over DOSE of sypur can HARM her LIVER. |
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| 5649. |
A car starts from rest and moves along the x-axis with constant acceleration 5ms−2 for 8 seconds. If it then continues with constant velocity, what distance will the car cover in 12 seconds since it started from rest? pls tell |
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Answer» above Question , the following information is given - A car starts from rest and moves along the x-axis with constant ACCELERATION 5ms−2 for 8 seconds.it then continues with constant VELOCITY.We have to find the distance covered by the car in 12 seconds after it STARTED from rest . Solution - From various LAWS of motion , we know that - Acceleration = ∆ V / t => ( v - u ) / t Here , the car started from rest . So , u = 0 It travelled for 8 seconds .Hence , t = 8 seconds .We also have the value of acceleration of the car given as 5 m / s^2 So , 5 = ∆v / 8=> 5 = v / 8 [ as u = 0 ] => v = 40 m / s.Now , Distance travelled by the car in these 8 seconds => S = ut + ( 1 / 2 ) at ^ 2 => S = ( 1 / 2 ) × 5 × 64 => 5 × 32 => 160 m.Now , it travels with a constant velocity of 40m/s for next 4 seconds .So, distance travelled in next 4 seconds = 160 m.Hence total distance travelled by the car in 12 seconds - => 160 m + 160m=> 320 m ......... Answer |
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| 5650. |
A kangaroo is capable of jumping up to the height of 2.62m. Determine the take off speed of the kangaroo. Pls show with steps... I saw some answers but I don’t know from where did the get their acceleration. Pls help & acceleration is NOT given so pls show steps. I will mark answers as brainliest ... |
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Answer» he attachment hope it helps.. if you like it don't forget to MARK me as Brainlist. EVERY PLANET has its own acceleration due to GRAVITY in case of earth It is 9.8 m/s^2 this VALUE also changes from poles to equator and from planet to planet but during calculation it is taken as 9.8m/s^2 or 10m/s^2 according to convince |
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