InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 4301. |
Length of a simple pendulum is25.0cm and of 40osclitaionif resolution stopwatch |
| Answer» Dost question to complete write karo | |
| 4302. |
11 class passing criteria all subject |
| Answer» Only me each sub 50 to 58<br>23 marks only in each subject not 50 or 58 marks<br>Between 50 and 58 all subject<br>23 maks only !<br>23 marks each subject this is only passing marks<br>Hlo<br>How are u<br>Hello<br>Hi | |
| 4303. |
applications of ultrasonics |
| Answer» 1. Detection of flows (cracks, blowholes, porosity) in metala.2. In SONAR (Sound Navigation And Ranging).3. Ultrasonic welding.4. Ultrasonic cutting and machining.5. Ultrasonic soldering.<br>Ultrasound waves are used in many different fields. Ultrasonic devices are used to detect objects and measure distances. ... In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning, mixing, and to accelerate chemical processes.<br>Medical applications\tUltrasonic waves are used to\xa0capture the images\xa0of the heart and its features and problems associated with the heart, if any (for treatment purpose). This is called\xa0echocardiography.\tUltrasound scans/Ultrasonography\xa0are very commonly used to get images of internal body organs such as liver, kidney, uterus. It helps the doctor to diagnose and treat problems in the body of the patient. In this method, ultrasound waves are made to travel through the body to the organ under consideration. They get reflected and these are converted to electrical signals which can be monitored on a screen.\tUltrasonography\xa0is used to observe the growth of the\xa0fetus\xa0inside the uterus. It can also used to monitor the abnormalities.\tIt is used to break\xa0kidney stones\xa0into fine grains which later get flushed out through urine. Industrial Applications\tUltrasound is used to\xa0clean machine parts\xa0located in places which are not easily accesible - electronic components, internal parts, spiral parts etc. The objects are placed in a cleaning solution and waves are passed through it. Because of the high frequency of the waves, the dust particles just fall out.\tIt is used to\xa0detect defects, flaws, cracks\xa0in machine parts, bridges, building etc. Ultrasound waves are passed at one end and monitored using detectors. If there are laws or cracks, then the ultrasound waves are reflected back indicating the presence of a defect. | |
| 4304. |
1 bar=-----‐-\'Pa |
| Answer» 1bar=101325 pascals<br>1 Bar = 100000 Pascals | |
| 4305. |
What is instantaneous momentum ? |
| Answer» | |
| 4306. |
Laplace correction ? |
| Answer» | |
| 4307. |
What is shearing stress ? |
| Answer» Shearing stress is a force that causes layers or parts to slide upon each other in opposite directions. An example of shearing stress is the force of two connecting rocks rubbing in opposite directions. | |
| 4308. |
What is yogita ingle ? |
| Answer» This is a girl | |
| 4309. |
What is dimesion of densty |
| Answer» The dimensional formula of density is given by,[M1 L-3 T0]Where,\tM = Mass\tL = Length\tT = Time<br>Density = mass / volume= kg/ m^3= [M^1 L ^-3 T^0 ] | |
| 4310. |
Define Snell\'s law. |
| Answer» | |
| 4311. |
Mean of stress and strain |
| Answer» | |
| 4312. |
What is hook law |
| Answer» Hookes law state that within elastic limit stress is directly proportional to strain<br>Within elastic Limit, Stress is directly proportional to the strain. | |
| 4313. |
Describe the types of collision. |
| Answer» | |
| 4314. |
What is the relationship between torque and moment of inertia? |
| Answer» T=IWTorque= moment of inertia × angular momentum | |
| 4315. |
Explain the elastic behaviour of solids . |
| Answer» | |
| 4316. |
Instantaneous distance |
| Answer» | |
| 4317. |
What is rotatary motion |
| Answer» A rigid body performs a pure rotational motion, if each particle of the body moves in a circle, and the centre of all the circles lie on a straight line called the axes of rotation. | |
| 4318. |
What fraction of total energy when displacement is one half of its Amplitude.(In case of SHM) |
| Answer» | |
| 4319. |
Kepler\'s third low |
| Answer» The kepler\'s third law said that the square of time period (t) is directly proportional to the cube of radius (r) it means-: T^2=kr^3Where t=time period , r= radius of earth K=proportionality constant<br>Law of peeiod<br>Law of period :- The square of time period of revolution is directly proportional to the cube of average radius i.e. T^2 = kr^3 | |
| 4320. |
Prove that Bernoulli\'s Theorem |
| Answer» \tConsider the fluid initially lying between B and D. In an infinitesimal timeinterval Δt, this fluid would have moved.\tSuppose v1= speed at B and v2= speedat D, initial distance moved by fluid from to C=v1Δt.In the same interval Δtfluid distance moved by D to E = v2Δt.P1= Pressureat A1, P2=Pressure at A2.Work done on the fluid atleft end (BC) W1 = P1A1(v1Δt).Work done by the fluid at the other end (DE)W2 = P2A2(v2Δt)\t\t\tNet work done on the fluid is W1 – W2 = (P1A1v1Δt− P2A2v2Δt)\tBy the Equation of continuity Av=constant.\tP1A1 v1Δt - P2A2v2Δt where A1v1Δt =P1ΔV and A2v2Δt = P2ΔV.\t\t\tTherefore Work done = (P1− P2) ΔVequation (a)\tPart of this work goes in changing Kinetic energy, ΔK = (½)m (v22 – v12) and part in gravitational potential energy,ΔU =mg (h2 − h1).\t\t\tThe total change in energy ΔE= ΔK +ΔU = (½) m (v22 – v12) + mg (h2 − h1). (i)\tDensity of the fluid ρ =m/V or m=ρV\tTherefore in small interval of time Δt, small change in mass Δm\tΔm=ρΔV (ii)\t\t\tPutting the value from equation (ii) to (i)\tΔE = 1/2 ρΔV (v22 – v12) + ρgΔV (h2 − h1) equation(b)\tBy using work-energy theorem: W = ΔE\tFrom (a) and (b)(P1-P2) ΔV =(1/2) ρΔV (v22 – v12) + ρgΔV (h2 − h1)P1-P2 = 1/2ρv22 - 1/2ρv12+ρgh2 -ρgh1(By cancelling ΔV from both the sides).\t\t\tAfter rearranging we get,P1 + (1/2) ρ v12 + ρg h1 = (1/2) ρ v22 + ρg h2\tP+(1/2) ρv2+ρg h = constant.\tThis is the Bernoulli’s equation. | |
| 4321. |
Derive an expression for variation of g with altitude |
| Answer» | |
| 4322. |
Anomalous behavior of water |
| Answer» Tere mc<br>This anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4°C to 0°C, and it becomes less dense. The density becomes less as it freezes because molecules of water normally form open crystal structures when in solid form. | |
| 4323. |
Derivation of formula of rotational kinetic energy |
| Answer» | |
| 4324. |
Calculate the temperature of 4 mole of a gas occupying 5m3 at 3.32bar |
| Answer» Vjdnl | |
| 4325. |
Write characteristic of stationary waves and explain different cases of modes with diagram |
| Answer» | |
| 4326. |
Find the value of g at h=2R. |
| Answer» example of SHM<br>-29.4 | |
| 4327. |
General eqn of shm? |
| Answer» | |
| 4328. |
on moving away from equator towards poles the weight of the body ? |
| Answer» | |
| 4329. |
Derive the expression for specific heat capacity of a distance gases |
| Answer» | |
| 4330. |
Difference between plsticity and elaticity |
| Answer» the property of substance by which it regains its shape nd size aftr removal of deforming force ,is called elasticity nd..which cant regain , is called plasticity<br>After the removal of deforming force the body comes back into its previous state or shape that body is known as plastic body.And this property is known as plasticity,e.g. rubber band.After the removal of deforming force the body does not come back into its previous state or shape that body is known as elastic body.And this property is known as elasticity. | |
| 4331. |
Formula of unit and dimensions |
| Answer» | |
| 4332. |
Moment of interia parallel axis theroem derivation |
| Answer» | |
| 4333. |
what is ideal liquid? state and prove Bernoulli theorem |
| Answer» An ideal fluid (also called Perfect Fluid) is one that is incompressible and has no viscosity. Ideal fluids do not actually exist, but sometimes it is useful to consider what would happen to an ideal fluid in a particular fluid flow problem in order to simplify the problem. | |
| 4334. |
How many erg in 1 kilowatt hour ? |
| Answer» 1 kWh = 1000W * 1h = 1000J/1s)*3600s = 36×\u200b105JAlso 1 Joule = 107 erg1 kwh = 36×\u200b105 J = 36×1012 erg | |
| 4335. |
Dimensional formula of Impulse |
| Answer» Impulse = change in momentumHence, the dimensional formula for impulse is [M L T-1]. | |
| 4336. |
how far is parsec in km when theta is 1 to the power n ,base=1 au and s=1pc |
| Answer» | |
| 4337. |
Where is blow jobcentre located plz tell? |
| Answer» | |
| 4338. |
How will you prove that the speed of sound is increased by 0.61m/s by increasing the temperature 1°C |
| Answer» | |
| 4339. |
Dimension of Momentum |
| Answer» M^1L^2T^-1<br>MLT^-1 is for linear and ML^2T^-1is for angular<br>MLT^-1 | |
| 4340. |
what is hydraulic brake? |
| Answer» It is work on principal of pascal law<br>It is the application of Pascal law | |
| 4341. |
Two bodies of different masses have same linear momentum. Which one has greater kinetic energy |
| Answer» Which have high velocity and low mass<br>The body which has Lowe mass will have greater KE | |
| 4342. |
What are beats? Determine beat frequency |
| Answer» Apperent chenge in frequency of sound due to superposition of many wave | |
| 4343. |
What is ideal gas |
| Answer» Which obey ideal gas equation<br>A gas which obey all the gas low ( boyles low,chales low)is called ideal gas | |
| 4344. |
How to find the value of tan40° ? |
| Answer» | |
| 4345. |
Will the momentum remain constant if some external force act on the system |
| Answer» No because there will be change in velocity when we apply external force and we know momentum is directly proportional to velocity<br>No because absence of external force linear momentum is conserved | |
| 4346. |
If angle of projection of a projectile is 90°, then horizontal range is how much |
| Answer» It depend on velocity by which you are throwing it Apply formula u^2 /g<br>0Because it means we throw it vertically upward it means it didn\'t covered any distance from horizontal | |
| 4347. |
If A*B =0 then what is the angle between A and B |
| Answer» 90 | |
| 4348. |
What is bending of cyclist? |
| Answer» | |
| 4349. |
what is the ratio of gravitational force to nuclear force. |
| Answer» G:N= 1:10^38 | |
| 4350. |
What is an impluse |
| Answer» And change in momentum<br>F×dt<br>Ggb<br>Impulse\tImpulse is defined as a force multiplied by time it acts over.\tFor example: Tennis racket strikes a ball, an impulse is applied to the ball. The racket puts a force on the ball for a short time period. | |