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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.
| 251. |
Write the important contribution of Issac Newton in Physics |
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Answer» Answer: In mechanics, his three laws of MOTION, the basic principles of modern physics, RESULTED in the formulation of the LAW of universal gravitation. In mathematics, he was the ORIGINAL discoverer of the infinitesimal calculus. Subjects of study: light; gravity; colour; planet; calculus Explanation: mark me as brilliant |
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| 252. |
Which is the solute and solution in air |
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Answer» Answer: AIR: In the air, the presence of nitrogen is comparatively HIGHER than the other components. THEREFORE, these minor components such as OXYGEN acts as the solute and the nitrogen acts as the solvent. |
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| 253. |
Write the important contribution of Issac Newton in Physics |
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Answer» Answer: In mechanics, his three LAWS of motion, the basic principles of modern physics, resulted in the formulation of the law of universal GRAVITATION. In mathematics, he was the original discoverer of the infinitesimal calculus. Subjects of study: light; GRAVITY; colour; planet; calculus Notable works: “The Mathematical Principles of Natural Philosophy”; “Opticks”; “The ... ROLE in: Scientific Revolution |
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| 254. |
*Mohit is riding a bicycle along a straight path . Name any one part of the bicycle which is in-* a) Rectilinear motion b) Circular motion |
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Answer» Answer: a RECTILINEAR motion Explanation: |
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| 255. |
A solid mass 270 g and its volume 100 cm3,its density |
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Answer» Answer: 2.7g/cm^3 Explanation: density=mass/volume density=270/100 =2.7 |
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| 256. |
C. Write true (T) or false (F) against the following statements.1. The increase in intermolecular space between the molecules leadsto a decrease in intermolecular force of attraction.2.Kinetic energy is inversely proportional to temperature.3.For most substances, melting point and freezing point are the same.4.The force of cohesion is maximum in gases. |
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Answer» hope it help Explanation: 1. TRUE 2 .true 3. false 4. false |
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| 257. |
Q. While fie nature of forces (contant a non Contactand type forcesinvolved in the followingSituation:a. Lifting water from bucketb. Throwing a ball upto bright.c. Pushing the tabled. Ringing of electronic belle Picking iron nails from magnetf. Cyclingg. Hitting a six in cricketh. Sticking of bits of paper on plastic comb ( charged )I. floating of dry wood on the surface of waterj. falling of mangoes from a tree.please answer me fast |
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Answer» Explanation: 1. CONTACT force 2.Contact force 3. Contact force 4. Non - Contact force 5. Non contact force 6. Contact force 7. Contact force 8. Contact force 9. Non contact force 10. Non contact force this is your ANSWER buddy. |
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| 258. |
0. Ishaan moves along the boundary of a square playground of side 10 min 40 s. What will be his distance and magnitude of displacement at the end of 2 minutes 20 seconds from his initial position? |
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Answer» Answer: Distance = 35 metres MAGNITUDE of displacement = 5 metres Explanation: Given:- Length of side of square playground : 10 metres TIME taken to cover 10M boundary of ground : 40sec To Find:
(i) Distance travelled at the end of 2 min 20 sec from his initial position (ii) Magnitude of displacement at the end of 2 min 20 sec from his initial position Solution:- Seconds in 2 minutes 20 seconds = (2×60) + 20 = 140 seconds Ishaan covers 10 metres is 40 seconds...so his speedmust be equal to (10/40) , that's 0.25m/s. So in 140 seconds, Distance covered = 140 × 0.25 m (i) Distance covered = 35 metres EVERY side of the square is of length 10 metres, thus after 2 minutes 20 seconds , Ishaan must end up in the middle of 4th side of the square playground. Displacement is given by the net Distance between initial point & final point. (ii) Thus Magnitude of displacement = 5 metres. |
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| 259. |
A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, what % (percent) is speed of light in diamond with that of speed in air? |
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| 260. |
How are the motion of a wheel and an athlete different from each other? |
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Answer» ACCELERATION is the RATE of CHANGE of velocity PER unit time. it is a vector QUANTITY. SI unit of acceleration is m/s². |
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| 261. |
A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, what % (percent) is speed of light in diamond with that of speed in air? |
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Answer» Answer: 242% of the SPEED of the light REDUCED on ENTERING the diamond. Explanation: |
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| 262. |
Names the kind of motion that exist in the following of example |
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| 263. |
Write three applications of relative density |
Answer» Relative density can also help to quantify the buoyancy of a SUBSTANCE in a fluid or gas, or determine the density of an unknown substance from the known density of another. Relative density is often USED by GEOLOGISTS and MINERALOGISTS to help determine the mineral content of a rock or other sample. |
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| 264. |
PLEASE GIVE ME NOTES OF THE CHAPTER 'FRICTION ' CLASS 8 CHAPTER 12.please help me .it's urgent. spam answer will be reported and who give spam answer his/ her all answer will be reported |
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Answer» REFER to the above ATTACHMENT |
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| 265. |
The minutes hand of wall clock is 14cm long. Find its displacement anddistance covered 10am to 10.15am. |
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Answer» Answer: 19 Explanation: HOPE it HELPS MARK me the BRAINLIEST |
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| 266. |
Aeroplane cabins are said to be pressurised. What do you mean by this? Why is it done? |
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Answer» Answer: To RECAP, airplanes are pressurized because it protects pilot, crew and passengers from HYPOXIA. Airplanes are designed to pump AIR into the cabin to mimic the 14.7 pounds per square (PSI) of pressure that's found at SEA LEVEL. |
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| 267. |
Name 6 type of motion that you know |
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Answer» Answer: ROTATORY MOTION, rotatory motion, OSCILLATORY motion, uniform circular and periodic motion, rectilinear motion, oscillatory motion and periodic motion. The objects which are at a continuous state of rest are known as Stationery Explanation: mark as brilliant |
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| 268. |
I love moderator rankI love genius rank please answer this question in 2 min |
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Answer» Answer: TOTAL Pairs of Jeans Ankit had = 2 Cost of each pair = Rs. 990 Now, let's calculate the amount for the first pair. C.P = Rs.990 Profit = 10% Hence profit = Rs.99 So, the final price will be Rs.990 + 99 = 1089 Now, CALCULATION for the 2nd pair of jeans C.P = Rs.990 Loss = 10% Hence, loss = Rs.99 So, the final price will be Rs.990 - 99 = 891 Now, VERIFY profit or loss Price of 1ST pair + Price of 2nd pair = 1089 + 891 = 1,980 Original price of 1st pair + Original price of 2nd pair = 990 + 990 = 1,980 S.P = C.P, Hence , no profit no loss |
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| 269. |
Class 6CBSE chapter changes around us answer if you know don't be useless answer |
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Answer» Answer: Hey I am also in class 6 here is the answer of question 1 Yes, all changes involve exchange of energy. Energy is EITHER absorbed or released during changes. Energy is always present and it only takes different forms without which, no change can happen. Example: When ice is melted, solid STATE changes to liquid. Here, energy is supplied in the form of heat. This heat energy is absorbed by the ice cubes and they start melting. Hence, ice cubes (solid state) changes to water (liquid state) by exchange of energy. Breaking a wooden log with axe by a person. Here, the energy is exerted by the person through axe on the wooden log. Thus, energy is transformed from the person to axe and then to the wooden log. Hence, exchange of energy causes the breaking of wooden log Explanation: Please mark as brainlist |
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| 270. |
Class 6 CBSE science chapter 6 changes around us |
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Answer» Answer: answer 2 Yes all changes involve interactions. No, we cannot mean only physical interaction here. It MAY also be non-physical interactions. Let US give some examples having non-physical interactions. Conversion of water to vapour by evaporation: Here, water MOLECULES attain kinetic energy due to the surrounding heat, thus they interact with each other and evaporate to vapour. Chemical reaction between iron and sulphur on HEATING: By heating, the atoms present in the mixture of iron and sulphur attains energy, interact with each other and form iron sulphide. these are my notes Explanation: PLEASE MARK ME AS BRAINLIST |
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| 271. |
Pls solve the following question |
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Answer» धार्मिक ग्रंथो के अनुसार वैवस्तव मनु के कुल दस पुत्र थे,जिनमें आठवें पुत्र का नाम इक्ष्वाकु था,इक्ष्वाकु के द्वारा ही कोशल नगरी बसाई गयी थी जिसकी राजधानी का नाम अयोध्या था,इक्ष्वाकु के वंश में अज तथा उनके पुत्र राजा दशरथ हुए,राजा दशरथ के ही पुत्र राम लक्ष्मण, भरत तथा शत्रुघन हुए,राजा दशरथ की पत्नी कौशल्या के पुत्र राम |
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| 272. |
Pls solve the following |
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Answer» Answer: 1)24 cm Explanation: |
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| 273. |
কে প্রথম থার্মোমিটার আবিষ্কার করেন |
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Answer» धार्मिक ग्रंथो के अनुसार वैवस्तव मनु के कुल दस पुत्र थे,जिनमें आठवें पुत्र का नाम इक्ष्वाकु था,इक्ष्वाकु के द्वारा ही कोशल नगरी बसाई गयी थी जिसकी राजधानी का नाम अयोध्या था,इक्ष्वाकु के वंश में अज तथा उनके पुत्र राजा दशरथ हुए,राजा दशरथ के ही पुत्र राम लक्ष्मण, भरत तथा शत्रुघन हुए,राजा दशरथ की पत्नी कौशल्या के पुत्र राम |
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| 274. |
Greater the force, greater will be the _________________. |
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Answer» Answer: They CHANGE the SPEED. It WOULD be better to say a greater force causes a greater CHANGE in velocity for an OBJECT. ... In that particular case, a greater gravitational force means that the PLANET must have a circular ORBIT with a greater speed. |
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| 275. |
Q. Answer the following in one word: 1. Liquid that mix well with one another. 2. The shine exhibited by a material, especially a metal. 3. Name 2 gases used by aquatic plants and animals that are soluble in water. 4. Property of objects attracted by magnets. Q, Answer in brief : 5. Mixtures of red chilly powder in water, butter in water, petrol in water and honey in water are given to Radha, Sudha, Sofia and Suraj respectively. Whose mixture is in solution form? 6. Take a small cotton ball and place it in a tumbler/bowl filled with water. Observe it for at least 10 minutes. Will it float or sink in water and why? 7. How are the gases dissolved in water, important for living organisms? |
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Answer» Answer: 1. miscible 2. lustre 4. magnetism 5. Suraj's (as only honey dissolves in water) 6. First, it will float when it is lighter. After some TIME, it will SINK because it has absorbed water and thus become heavy. 7. Oxygen is used by aquatic organisms for respiration. And carbon dioxide is used by aquatic PLANTS for photosynthesis. |
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| 276. |
The planet Neptune travels in a nearly circular orbit of radius , r = 4.5 × 109 km, about the sun. It takes Neptune 165y to make a complete trip around the sun. How fast (in km/h) does not Neptune travel in its orbit ? |
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Answer» Answer: HOPE IT HEPLS YOU!!!! Explanation: As, T1=TEarth=1yrandT2=TNeptune=165yr Let R1andR2 be the RADII of the circular orbits of the earth According to Kepler's THIRD law T21T22=(R31)R32R32⇒R32=R31T22T21⇒R32=R31×(165)212 ⇒R32=1652R31⇒R2≈30R1 pls MARK me brainliest |
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| 277. |
An object has moved through a distance . Can it have zero displacement ? If yes , support your answer with an example . |
Answer» Answer:Yes, if the object has moved through a DISTANCE, it surely can have zero DISPLACEMENTS. as DISPLACEMENT is a vector quantity DEPENDING on starting and ending position, not on the path. An object moving a certain distance can have zero TOTAL displacements |
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| 278. |
Physics question please help me |
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Answer» ii)in motion towards right |
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| 279. |
1/1440 part of a mean solar day is called _________. |
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| 280. |
Study the given diagram and find the gravitational force between two spherical objects 6m 4m 400kg 800kg |
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Answer» Answer: FORCE between two SPHERICAL objects 6m 4m 400kg 800kg |
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| 281. |
Give reasons i) Roofs of a hut get blown off during a storm. ii) A sky lantern rises up. |
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Answer» Explanation: i)The PRESSURE below the roof is EQUAL to the atmospheric pressure which is now larger than pressure above the roof. This difference of pressure causes an upward THRUST and the roof is LIFTED up. Once the roof is lifted up, it is blown off with the wind along its direction ii)They CONSIST of a paper shell stretched over a frame, with a candle inside. When lit, the flame heats the air inside the lantern, causing the lantern to rise into the air like a hot air balloon |
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| 282. |
Is mass derive quantity |
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Answer» (2016) Time, Length, and MASS Are DERIVED QUANTITIES. Journal of Modern Physics, 7, 1192-1199. doi: 10.4236/jmp. ... Since the concept of the force phenomenon applied to an object is more FUNDAMENTAL than the concept of mass, the unit of force is more fundamental that the unit of mass, which is also a derivation. |
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| 283. |
What is carbhydrates |
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Answer» carbohydrates are types of nutrients Explanation: they provides US energy ... even they are QUICKLY digested as COMPARED to proteins, fats etc.carbohydrates are digested partially in our mouth through saliva by an ENZYME called salivary amaylaze |
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| 284. |
What is the speed of electricity |
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Answer» Explanation: This energy TRAVELS as electromagnetic waves at about the SPEED of LIGHT, which is 670,616,629 miles per hour,1 or 300 million meters per second. 2 However, the electrons themselves within the wave MOVE more slowly. This concept is known as DRIFT velocity |
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| 285. |
@armygirlarchita she is not listening to me hey please kwan , sanna Or mina talk with her in her she is not listening to my parents also. |
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Answer» GOOD evening I PURPLE you |
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| 286. |
What is acceleration in long answer |
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Answer» Explanation: Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the EQUATION a = Δv/Δt. This ALLOWS you to measure how FAST velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it INCLUDES both magnitude and DIRECTION. |
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| 287. |
Define the volume of liquid? |
Answer»
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| 288. |
What is si unit of pressure |
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Answer» Answer: The SI UNIT for PRESSURE is the PASCAL (PA), equal to one NEWTON per square metre (N/m2, or kg·m−1·s−2) |
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| 289. |
Statement type questions.1) Both I and II are true 2) Both I and II are false 3) I is true and II is false 4) I is false and II is true. 7. Statement I: The direction of hat i is always along horizontal hat j Statement II: The direction of is along positive x axis. 8. Statement I: A vector is described by overline A =A x hat i +A y j+A z k, then A y is a scalar. Statement II: The projection of a vector is a scalar 9. Statement I: When a vector is rotated, its magnitude remains constant Statement II: The magnitude of a vector is independent of the coordinate system. 10. Statement 1: Vector sum of three coplanar forces can be zero(HW) Statement II: Minimum number of unequal coplanar vectors required to keep a point in equilibrium is three. |
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| 290. |
In distance time graph the distance is _______ to time taken |
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Answer» Explanation: |
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| 291. |
a machine gun bullet of mass m leaves a barrel at a speed of 250ms^-1 and has a kinetic energy of 37500J. what is the mass of the bullets |
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| 292. |
Write relation between focal length and radius of curvature |
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Answer» Answer: The relation between focal LENGTH (F) and radius of curvature (R) of a spherical mirror is that the focal length is EQUAL to half of the radius of curvature i.e. f=R2. ... We know that rays of light parallel to the principal axis passing through the FOCUS (F) of a concave mirror, after REFLECTION |
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| 294. |
List and explain the factors that affect temperat ure?=> |
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Answer» Answer: The factors that affect temperature are latitude, ALTITUDE, DISTANCE from the sea, OCEAN currents and winds. Mark as brainliest. |
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| 295. |
To describe the motion of an object we use _____ graft |
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Answer» To describe the motion of an OBJECT we USE VELOCITY- time graft. Hope it HELPS... Please mark me brainliest. |
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| 296. |
WRITE DOWN SIMILARITIES AND DIFFERENCES BETWEEN CLINICAL AND LABORATORY THERMOMETER |
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Answer» Similarities between clinical and laboratory thermometer are: 1) Both clinical and laboratory thermometers have long, narrow, uniform glass tubes. 2) The BULBS of both the thermometers have mercury in them. Differences are: 1) The TEMPERATURE RANGE of clinical thermometers is from 35°C to 45°C while that of laboratory thermometers is from -10°C to 110°C. 2) Clinical thermometers are used to MEASURE the temperature of a human BODY. |
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| 297. |
Why the funny mirrors give another type reflection while they are plane |
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Answer» A plane mirror is a mirror with a FLAT (PLANAR) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the INCIDENT RAY and the surface normal (an imaginary line perpendicular to the surface). |
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| 298. |
Q I. Answer in one word:1. The frictional force ----------- with increase in weight of the body.2. Ball bearing reduces the wear and tear of ______ parts of machine.3. Fluid friction can be minimised by giving suitable --------------- to bodiesmoving in fluid.4. What is the specific name of fluid friction?Q II. Answer in brief: -5. Give reason sliding friction is less than static friction.6. What is stream line shape? How does it help to reduce fluid friction?7. Why do we say friction is a necessary evil? Define the term wildlife |
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| 299. |
What is the volume of a block . length 2cm, breadth 0.01 m and height 0.05m? explain it. |
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Answer» Answer: Explanation: 1 M2 = 100 DM2 = 10 000 CM2 = 1 000 000 mm2 0.01 m2 = 1 dm2 = 100 cm2 = 10 000 mm2 0.0001 m2 = 0.01 dm2 = 1 cm2 = 100 mm2 0.000001 m2 = 0.0001 dm2 = 0.01 cm2 = 1 mm2 1 km2 = 100 ha2 = 1 000 000 m2 0.01 km2 = 1 ha2 = 10 000 m2 0.000001 km2 = 0.0001 ha2 = 1 m2 |
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| 300. |
நெடுவினாஎழுத்துகளின் தோற்றம் குறித்து பார்சிந்தனை வினாதற்காலத் தமிழ்மொழியின் வளர்ச்சிக்குச் செய்ய வேண்டிய பணிகளாக நீங்கள்2. தமிழை உரோமன் எழுத்துருவில் எழுதுவதால் தமிழுக்கு ஏற்படும் தீங்குகள் குறிக்( C1.கருதுவனவற்றை எழுதுக.121thaArtre' |
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Answer» Explanation: To help you plan the trip of a lifetime, take a look at our list of the best places to VISIT in Asia. Hoi An, Vietnam. ... Siem REAP, Cambodia. ... Singapore. ... Kingdom of Bhutan. Tiger's Nest MONASTERY. ... Kathmandu, Nepal. Swayambhu (Monkey Temple) ... Jaipur, India. Palace of the Winds in Jaipur. ... Luang Prabang, Laos. Kuang Si Falls. |
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