Explore topic-wise InterviewSolutions in .

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.

64001.

Two magnets are lying side by side as shown below draw magnetic field lines between the poles p and q

Answer»

please send the picture of the magnets first then I will be ABLE to ANSWER. Explanation:but MAKE coils NEAR the poles

64002.

Select wrong statement about centre of mass a)centre of mass of a 'c'shapedrod can never be a point on that(b) if the line of action of a forcethrough the centre of mass, the mof that force is zero.(c) centre of mass of our earth is notgeometrical centre.(d) while balancing an object on a pivotthe line of action of the gravitationalforce of the earth passes through thecentre of mass of the object.​

Answer» EXPLANATION:(C) CENTRE of MASS of our EARTH is notgeometrical centre.
64003.

A simplified model of hydrogenatom consists of an electron revolving about a proton ata distance of 5.3x10"m. The charge on a proton is +1.6x10-19 C. Calculate the intensity of the electric field due to próton at this distance.​

Answer»

tion:A SIMPLIFIED MODEL of hydrogenatom consists of an electron revolving about a proton ATA distance of 5.3x10"m. The charge on a proton is +1.6x10-19 C. Calculate the intensity of the ELECTRIC field due to próton at this distance.

64004.

The frequency of an organ pipe closed at one end in fundamental mode is f0 the frequency of second overtone is

Answer»

Vibrations of Air Column in PipesStationary Waves in a Closed PipeMusical wind instruments LIKE flute, clarinet etc. are based on the principle of vibrations of air columns. Due to the superposition of the incident WAVE and the reflected wave, longitudinal stationary waves are formed in the PIPE.Organ pipesOrgan pipes are musical instruments which are used to produce musical sound by blowing air into the pipe. Organ pipes are two types (a) closed organ pipes, closed at one end (b) open organ pipe, open at both ends.(a) Closed organ pipeIf the air is BLOWN lightly at the open end of the closed organ pipe, then the air column vibrates (as shown in figure) in the fundamental mode. There is a node at the closed end and an antinode at the open end. If l is the length of the tube,l = λ1/4 or λ1 = 4l …... (1)If n1 is the fundamental frequency of the vibrations and v is the velocity of sound in air, thenn1 = v/λ1 = v/4l …... (2)If air is blown strongly at the open end, frequencies higher than fundamental frequency can be produced. They are called overtones. Fig.b & Fig.c SHOWS the mode of vibration with two or more nodes and antinodes.Overtones in a Closed Pipel = 3λ3/4 or λ3 = 4l/3 …... (3)Thus, n3 = v/λ3 = 3v/4l = 3n1 …... (4)This is the first overtone or third harmonic.Similarly, n5 = 5v/4l = 5n1 …... (5)This is called as second overtone or fifth harmonic.Therefore the frequency of pth overtone is (2p + 1) n1 where n1 is the fundamental frequency. In a closed pipe only odd harmonics are produced. The frequencies of harmonics are in the ratio of 1 : 3 : 5.....(b) Open organ pipeWhen air is blown into the open organ pipe, the air column vibrates in the fundamental mode as shown in figure. Antinodes are formed at the ends and a node is formed in the middle of the pipe. If l is the length of the pipe, thenStationary Waves in an Open Pipel = λ1/2 Or λ1 = 2l …... (1)v = n1λ1 = n12lThe fundamental frequency,n1 = v/2l …... (2)In the next mode of vibration additional nodes and antinodes are formed as shown in Fig.b and Fig.c.l = λ2 or v = n2λ2 = n2 (l)So, n2 = v/l = 2n1 …... (3)This is the first overtone or second harmonic.Similarly, Overtones in an Open Pipe n3 = v/λ3 = 3v/2l = 3n1 …... (4)This is the second overtone or third harmonicTherefore the frequency of Pth overtone is (P + 1) n1 where n1 is the fundamental frequency.The frequencies of harmonics are in the ratio of 1 : 2 : 3 ....Resonance air column apparatusThe resonance air column apparatus consists of a glass tube G about one metre in length (as shown in figure) whose lower end is connected to a reservoir R by a rubber tube.The glass tube is mounted on a vertical stand with a scale attached to it. The glass tube is partly filled with water. The level of water in the tube can be adjusted by raising or lowering the reservoir.A vibrating tuning fork of frequency n is held near the open end of the tube. The length of the air column is adjusted by changing the water level. The air column of the tube acts like a closed organ pipe. When this air column resonates with the frequency of the fork the intensity of sound is maximum.Here longitudinal stationary wave is formed with node at the water surface and an antinode near the open end. If l1 is the length of the resonating air columnResonance Air Column Apparatusλ/4 = l1 + e …... (1)where e is the end correction.The length of air column is increased until it resonates again with the tuning fork. If l2 is the length of the air column.3λ/4 = l2 + e …... (2)From equations (1) and (2)λ/2 = (l2 – l1) …... (3)The velocity of sound in air at room temperaturev = nλ = 2n (l2 – l1) …... (4)

64005.

How to determine density of a liquid using up thrust and equilibrium

Answer»

r containing a liquid of known density is placed underneath the mass at right side of the SCALE such that it is immersed completely in the liquid. Due to upthrust the weight of the mass decreases and to make the system in balance it is moved to ANOTHER POINT and the BALANCING length is measured.Hope it helps

64006.

123. If A and B denote the sides of a parallelogram and its area is AB (A- 2and B) are the magnitudes of A and Brespectively, the angle between A andB is(1) 30°(2) 45°(3) 60°(4) 53°​

Answer»

2Explanation:it's a good idea to WRITE a review of the week is WORKING free FIRE I'd Tanwar3035F

64007.

Can 2 astronauts talk on the surface of moon as they do on earth.why?​

Answer»

THE CANNOT TALK BECAUSE THERE IS NO AIR ON THE MOON.

64008.

The acids present in an acid rain are (a) Carbonic acid, sulphuric acid and nitric acid(b) Acetic acid, formic acid and citric acid.(c) Lactic acid, oxalic acid and formic acid​

Answer»

a is the ANSWER of your QUESTION

64009.

A particle is traveling with a constant speed.this means

Answer»

It MEANS it TRAVELS EQUAL distance in equal interval of time.Please MARK it BRAINLIEST if it satisfied you :)

64010.

Q8 complete the following reaction. Copper sulphate(._) + zinc. ( Zn)zinc sulphate.(Blue)(ZnSO4) + copper (Cu)(colourless) (Red)​

Answer» COPPERSULPHATE + ZINC =zincsulphate
64011.

What is a principal focus of spherical mirror

Answer»

tion:The principal focus of a SPHERICAL mirror is a point on the principal axis of the spherical mirror at which, the LIGHT rays which are parallel to the principal axis ACTUALLY CONVERGE (meet) or appear to diverge after reflection.

64012.

No atmosphere on moon in terms of escape velocity

Answer» TION:Moon has no atmosphere because the value of acceleration due to gravity 'G' on the surface of moon is small. THEREFORE, the value of escape VELOCITY on the surface of moon is small. ... That is why all the molecules of gases escaped and there is no atmosphere on moon.
64013.

A particle move in a circular part of diameter 15. What will be the displacement and distance in two round?

Answer» HII MATE .. . .. . EXPLANATION: . .. .. . .. . ... . .. . . . . . .. . . .. . . .. .. . .. .
64014.

Electric energy _________ is electric energy________

Answer» POTENTIAL electric ENERGY if U have CS then u MARK me branliest
64015.

Distance between two slits in youngs experiment is 0.1mm.d=1.5m wavelength is 6000å.calculate distance between third bright and fifth dark fringe

Answer»

Let y = wavelength, d = .1mm, D = 1.5 m  and S = separation3 y = d SIN theta1      third bright FRINGE not COUNTING central maximum(4 + 1/2) y = d sin theta2         since m = 0 for first dark fringe1.5 y = d (sin theta2 - sin theta1) = d (theta2 - theta1)  since theta is smallS = D (theta2 - theta1) = D * 1.5 y / dS = 1.5 *  1.5 *6 * 10E-7 / 1 * 10E-4S = 2.25 * 6 * 10E-3 = 1.4 * 10E-2 m = 14 MM

64016.

A particle moves along a curve y equal to X square with constant tapered of 10 metres per second when the particle is at origin then the radius of curvature of path is

Answer» J jmukmukmjjExplanation:
64017.

Explain the structure of human eye.Briefly​

Answer»

The main parts of the human eye are the cornea, iris, pupil, aqueous humor, LENS, vitreous humor, RETINA, and optic NERVE. LIGHT enters the eye by passing through the transparent cornea and aqueous humor. The iris controls the size of the pupil, which is the opening that allows light to enter the lens.

64018.

How to make solar cooker by using concave Mirrors... ( PLEASE EXPLAIN IT CLEARLY )

Answer»

The Concave Mirror are used to focus the LIGHT and the heat so that heat at the points increase and food gets cooked fast..Use a large Mirror and place it facing the sun on a particular incline so that RAYS fall on mirror and get to the food placed down... The more the BLACK will be used in cooker the more heat will be there....The walls of cooker should be made of aluminium so that EXTRA light gets reflected towards mirror and The food gets cooked fast..

64019.

Friction define that is so easy to learn ​

Answer»

on:- The property which RESIST the relative motion between two surfaces in contact is called friction.*Frictional force:- The MECHANICAL force between two solid surfaces in contact with each other is called as frictional force. *MARK as Brainlist ANSWER... I HOPE THE THIS WILL HELP YOU

64020.

The equation of a standing wave is given by (rx) sin(100 nt)m . Find theamplitude, wavelength, time period,frequency and wave velocity ofinterfering waves.(Ans: The amplitude, wavelength, timeperiod, frequency and wave velocity ofthe interfering waves are 0.01 m, 2 m, 50Hz, 0.02 s and 100 m/s respectively.)​

Answer»

IIIIIIIIIIIAAAaSAaAaAAAAaASSZExplanation:EGIIFFH HE FHJHFgfyjffhjgbjhubjjjjjdjdhehehgwjskdjdbhdgdhhr dheuruuruurhrituiri2owiwjshskwjdhdowjsvs dijajajwjwhhshhhdhdhdjjdjejswdjjdjsjdjgfhhrhejskifhjs HU hhhahhhhsggsgsggagagaggagsgagjkk jjb UH. j j j.Gk y...........N vhhshsjhahhhwh2hhwh1hqh1hyqywgwggwgwggw.........mm...........yhhhhhhhahagsggsgsgahhahhagagaggwgegeye. hhehehahhahhahwhehehehbahah knjjkjshehejwjqjjqjqhqjqhqjqhhwh2.........

64021.

Three identical particles are fixed to the corners of an isosceles right-angled triangle by the means of massless connecting rods. Each of the two sides has a length d, the moment of inertia of this rigid object when the axis of rotation coincides with the hypotenuse of the triangle is.. a] 1/2 md^2 b]1/4md^2 c]md^2 d}3/4md^2

Answer»

hree identical particles are fixed to the corners of an isosceles right-angled triangle by the means of massless connecting RODS. Each of the two sides has a length d.To find:Moment Of Inertia when the AXIS is along the hypotenuse.Calculation:Since the axis is along the hypotenuse only the particle at the vertex opposite to the hypotenuse will CONTRIBUTE to moment of inertia.Let perpendicular DISTANCE of that particle from the axis be x ;Now , required moment of inertia:So, final ANSWER is:

64022.

Name the three component units used to measure length ranging from very short to very long value how are they related to si unit

Answer»

pegg pegg KARDE NA BOTTLE ma chadii

64023.

An electric which convert electric energy into meechanical energy is called

Answer»

fbkxxncvcm CJC cmckcmxbdkaExplanation:xnxnmbigndhsnxkchmckcfmxnxnmbigndhsnxkchmckcfmxkfmcjfmucfmufgjgjgkdksmzhxmxixxnxnmbigndhsnxkchmckcfmxkfmcjfmucfmufgjgjgkdksmzhxmxixxkxkxj me dmkxjckcknxkdmxkcnckckcjchd

64024.

Chemical reaction heat formula

Answer»

To calculate the amount of heat RELEASED in a chemical reaction, use the equation Q = mc ΔT, where Q is the heat energy TRANSFERRED (in joules), m is the mass of the liquid being heated (in kilograms), c is the specific heat capacity of the liquid (JOULE per kilogram degrees Celsius), and ΔT is the CHANGE in ...Explanation:

64025.

State and explain projectile motion

Answer» TILE motion:- The any object in flight after being thrown with some velocity is called projectile and its motion is called projectile motion.*EXPLANATION:-By definition, a projectile has a single force that acts upon it - the force of gravity. If there were any other force acting upon an object, then that object would not be a projectile. Thus, the free-body diagram of a projectile would show a single force acting downwards and labeled force of gravity (or simply Fgrav). Regardless of whether a projectile is moving downwards, upwards, upwards and RIGHTWARDS, or downwards and leftwards, the free-body diagram of the projectile is still as depicted in the diagram at the right. By definition, a projectile is any object upon which the only force is gravity. #Mark as Brainlist ANSWER
64026.

The person who can die easily they are known as?​

Answer»

the PERSON who can DIE EASILY they are KNOWN as BIHARI

64027.

Explain the cation and anion formation of the compound NaCl.​

Answer» CATION - Na+anion - CL-
64028.

07. 4) twelveTwo plane mirrors are parallel to eachother. The number of images formed is102) 1168.infinite 4) noneTwo plane mirrors inclined at certain angleto each other produced 7 images. Theangle between the mirrors is1) 3025453) 604) 75​

Answer»

infinityExplanation:Because when MIRRORS are PARALLEL ANGLE IS0

64029.

Eng xam idea class 9 gap filling

Answer» TION:but BRO where is yours QUESTION so we can ANSWER FASTLY
64030.

A U-shaped wire having current i is placed in regionof magnetic field as shown in figure, the magneticforce acting on wire is(1) (ar +21) Bi(3) 2Bir(2) (atr - 21)Bi(4) 2Bil​

Answer» 3. will be CORRECT ANSWERS
64031.

The gravitational potential energy of an object is due to

Answer»

the gravitatio POTENTIAL of OBJECT is GM÷R^2

64032.

Explain the expression for the equivalent resistance for which are connected in parallel?

Answer»

It MAY HELP you in your PROBLEM

64033.

Analogue of force in rotational motion is

Answer»

tion:Moment of INERTIA is the rotational analog of mass for linear motion. In simple words , it is a quantity expressing a body's TENDENCY to resist ANGULAR acceleration, which is the sum of the products of the mass of each particle in the body with the SQUARE of its distance from the axis of rotation

64034.

Q.Diametre of a plano-convex lens is 6 cm and thickness at the centre is 3 mm.If speed of light in material of lens is 2×10^8m/s the focal length of te lens is? anyone please answer correctly.☺​

Answer»

ength of plano - convex lens would be 30cmsee figure, a plano-convex lens of diameter 6CM and thickness at the centre is 3mm is shown in figure.from right angled ∆OAB,OA² = AB² + BO²⇒R² = (RADIUS)² + (radius - thickness)²⇒R² = 3² + (R - 0.3)²⇒R² = 9 + R² - 0.6R + 0.09⇒0.6R = 9.009⇒R = 90.09/6 ≈ 15 cmit is given that, speed of light in material of lens is 2 × 10^ 8m/sso, refractive index, μ = 3 × 10^8/2 × 10^8 = 1.5now using FORMULA, 1/f = (μ - 1)[1/R1 - 1/R2]here, R1 = 15CM , R2 = ∞so, 1/f = (1.5 - 1)[1/15 - 1/0]= 0.5/15= 1/30hence, f = 30 cm

64035.

Fill in the blanks. Shadow is formed in the ______ direction to the direction of source of lightTrees covered with a large number of leaves are natural ________. _________ gives rise to image formation. ​

Answer» 1. OPPOSITE.....................
64036.

Write the information about ceramic their types and uses

Answer» IDK .. SEARCH it...are yalllhope it HELPS YA buddie✌️✌️ DHA
64037.

Does rotation of moon is equal to rotation of earth ​

Answer»

ation of moon is not EQUAL to rotation of EARTH because of thier DIFFERENT SIZE.

64038.

If the periodic time of a pendulum whose length is 36.9 cm equals 1.22 seconds, how much gravitational acceleration is in the pendulum's region of existence?

Answer»

t=2pie√L/√gsobst²=4pie²l/gt=1.22 APPROXIMATELY t=1length (L) =36.9 approximately l= 371²=4(10)(37)/(G) 1=40(37)/gg=40(37)g=1480g=14.8

64039.

What is free fall plz explain it fast.............​

Answer» TION:DEFINITION of free FALL. 1 : the condition of UNRESTRAINED motion in a gravitational field also : such motion. 2a : the part of a parachute JUMP before the parachute opens. b : a rapid and continuing drop or decline a free fall in stock prices.
64040.

Define momentum with example of collision principle​

Answer»

m is the defined as the MOTION contained by any body and in COLLISION (whether it is elastic collision or inelastic collision) momentum remain conservedExplanation:In collision momentum is very important factor as bodies shares their energies while keeping their momentum conserved In elastic or inelastic collision momentum before collision is equal to the momentum after collision For example :- When we JUMP from a boat to the SHORE, we move forward and the boat moves in BACKWARD direction to keep the momentum conserved.When a bullet is fired the gun recoils to keep the momentum conservedWhen a heavy moving body collides with the light body at rest then some motion is imparted to the body at rest to keep the momentum conservedTo know more about momentum and collision, visit:State the law of conservative of linear momentum. it is a consequence of which law? given an example from our daily life for conservation of momentum does it hold good during burst of a cracker?​ brainly.in/question/13023075 What is linear momentum? brainly.in/question/4338173

64041.

Please answer me please ​

Answer» HOPE it's HELP YOUMAKE me BRAIN LIST
64042.

A train Is travelling ata speed of 90km/h.Brakes are applied so as to produce uniform acceleration of (-0.5m/s-2). How far will the train go before it is brought to rest

Answer»

625m and 50 SECOND Explanation:MARK me BRAINLIESTS ANSWER PLEASE

64043.

A piece of steel has a weight W in air, W1 when completely immersed in water and W2 when completely immersed in an unknown liquid. The relative density (specific gravity) of liquid is : A W - W 1 W - W 2 B W - W 2 W - W 1 C W 1 - W 2 W - W 2 D W 1 - W 2 W - W 2

Answer»

Balance of the answer is UNAVAILABLE due to some technical errors please come back later and cooperate with US#BRAINLY

64044.

Identify the type of Inertia​

Answer» INERTIA of MOTION Inertia of restExplanation:
64045.

WHAT MUST BE THE DISTANCE BETWEEN TWO equal and opposite charges having equal magnitue of force16 N

Answer» HALF is 16N FORCE is 8N force so the DISTANCE will be about 8N force
64046.

❤❤❤..why..the..alternating..current of any..value..is..so.dangerous.than.the.same value of...dc.current.??❤❤✌✌​

Answer»

ving the CONCEPT that DC is more DANGEROUS than AC with the same level of voltage because AC changes it direction multiple times (i.e. AC touches the ZERO value 50 or 60 times) per second due to frequency and there is a chance for VICTIM to skip the shock, whereas there is no frequency in DC.

64047.

Solve That This Question​

Answer» MARK me as BRAINLIEST FOLLOW me and HAPPY HOLI
64048.

how is the solenoid constructed how can you increase the strength of food for magnetic flight from a given solenoid​

Answer»

solenoid is a COIL made by a metal we can increase it by:INCREASING the number of coilssending more AMOUNT of electricityExplanation:

64049.

An observer to the left of a solenoid of n turns each of cross section area a

Answer»

your ANSWER is ABSURD PLEASE EDIT it EXPLANATION:

64050.

Two point charges 2×10^-7C and other 1×10^-7 are 1.0cm apart .what is the magnitude of the field produced by the either charge at the side of the other.

Answer»

is WOULD HELP you PLZ MARK as the BRAINLIEST