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. |
What doesslopeofdisplacement and time graph represet? |
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| 2. |
Energy and thrust State and prove the principle of conservation of linear momentumOn a rainy day rain is falling vertical |
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Answer» A ROCKET has an exhaust to RELEASE high velocity hot gases from fuel engine. When these gases come out, they THRUST the rocket forward. Basically conservation of momentum. Part of the entire system is propelled backwards thus giving the remaining part greater forward speedsExplanation: I HOPE this will HELP you |
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| 3. |
Which of the mirror always produces an image of smaller size |
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Answer» Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance GREATER than a focal LENGTH from the mirror's SURFACE. 10. The image of an object is found to be UPRIGHT and reduced in size. |
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| 4. |
if the vector product and dot product are equal to each other then find the angle between the vector |
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Answer» tion:( B × A )⋅ A =−BAsinθ n^ ⋅ A =0 Vector A and n^ are PERPENDICULAR to each other as direction of n^ can be given by RIGHT hand SCREW rule.Dot product of two vectors is zero when they are perpendicular to each other...thanks for QUESTION |
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| 5. |
State nebiton's the third laud |
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Answer» His third law states that for every action (force) in NATURE there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B ALSO exerts an equal and opposite force on object A. NOTICE that the forces are exerted on different objects.Explanation:Follow Me. |
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| 6. |
(b) (03)In Newton's second law, if we set the force acting on a particleto zero, we obtain the acceleration of the object to be zero. Doesit imply that Newton's first law of motion is included in thesecond law? With example explain the Newton's third law. |
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Answer» Newton's 3rd Law: To every ACTION, there is an equal and opposite reaction and they act on two different bodiesExplanation:Examples of Newton's 3rd law of motion are UBIQUITOUS in every day life. For example,When you JUMP ,Your legs apply a force to the ground ,and the ground applies and equal and opposite reaction force that propels you into the AIR ..... I hope it's HELPFUL to you...... |
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| 7. |
An electric kettle has a resistance of 30Ω. What current will flow when it is connected to a 240V supply? Find also the power rating of the kettle |
| Answer» TION:which CLASS are you from which class are you from | |
| 8. |
Who explain the birth of star |
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Answer» Heya mate your answer is----------------------------------------------------❤️✨❤️✨❤️✨❤️✨❤️✨❤️A star is born when atoms of LIGHT elements are SQUEEZED under enough PRESSURE for their nuclei to undergo fusion. All STARS are the result of a BALANCE of forces: the force of gravity compresses atoms in interstellar gas until the fusion reactions begin. |
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| 9. |
Electromagnetic energy is characterized by……... A) Wavelength B) Frequency C) Both A & B D) None |
| Answer» C) Both A and B is the CORRECT ANSWER | |
| 10. |
A. Fill in the blanks. 1.When current is switched on, an electric fan converts........... energy (mainly) intoenergy2.When current is switched on' in a room heater, it converts...........energy into.................energy3.We prefer a wire of................for making the 'heating element indomestic appliances like the electric iron, electric heater and the electric toaster.4.A safety device, based on the heating effect of current is the............please write correct answers and fast |
| Answer» 1 .. ELECTRICAL energy to mechanical energy .2... electrical energy to heat energy . 3...COPPER (cu) . 4...fuse . | |
| 11. |
Types of forces in a cell |
| Answer» EXTERNAL forces experienced by cells and TISSUES include TENSION, compression, shear, swelling and membrane curvature. | |
| 12. |
Rohan is observing his image in a plane mirror. The distance between the mirror and his image is 8 m. If he now moves 2 m towards the mirror, then the distance of the new image from the |
| Answer» TION:The distance between David and the MIRROR is equal to the distance between the mirror and his IMAGE. When he MOVES 1 m towards the mirror, he is at a distance of 3m (4m - 1m) from the mirror. Thus, the distance between David and his image will be = 3m + 3m = 6m. | |
| 13. |
15. ABCD is a square of side 0 : 2m. Charges of +2nc, +4nC and +2nC are placed at the corners A, B and C respectively. Calculate the magnitude of resultant electric intensity atcorner D. |
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Answer» 0.2mExplanation:ANSWER : 6.27×10−7J SOLUTION : Here, qA=2×10−9C,qB=4×10−9C, qC=8×10−9C AB=BC=CD=DA=0.2m, |
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| 15. |
Subject physics .................. |
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Answer» What is this? What is the QUESTION? |
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| 16. |
Plzz don't spam....give only right answer ....if u don't know then don't answer |
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Answer» the DIRECTION of ACCELERATION |
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| 17. |
Which is not a type of speed * Reaction abilityMovement speedLocomotor abilityNone of the above |
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| 19. |
What is the formula to find voltage drop of an AC single phase wiring circuit |
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Answer» To CALCULATE voltage drop:Multiply current in amperes by the length of the circuit in feet to get ampere-feet. Circuit length is the distance from the point of ORIGIN to the LOAD END of the circuit. DIVIDE by 100. Multiply by proper voltage drop value in tables. |
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| 20. |
True or False: In a mirror, if A is able to see B, B also can see A Choices:- TRUE FALSE May be None of these Rey |
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Answer» let's SEE what we have in hand - There is a mirror and two individuals, named A and B. The question asks whether the statement - 'In a mirror, if A is ABLE to see B, B also can see A.' - is TRUE or not.It is a known fact that any person who stands in front of a mirror will be able to see him/her self as well as other people and THINGS right beside them. This happens due to the reflection of light. SIMILARLY, we can say that A and B can see each other in the mirror reflection, if only they are standing next to each other or in close proximity.Ans) TRUE |
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| 21. |
Draw the magnetic field line in a circular coil carrying current |
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Answer» Each small section of current carrying WIRE CONTRIBUTES to magnetic field lines. At the centre of circular wire,field lines become straight and perpendicular to the plane of coil. RIGHT hand thumb rule is USED to determine the direction of magnetic field produced DUE to current carrying circular wire. |
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| 22. |
Evaluate the equivalent resistance, if the resistances given R1, R2 and R3 in parralel. |
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Answer» Heya mate your ANSWER is----------------------------------------------------❤️✨❤️✨❤️Resistors are SAID to be connected together in parallel when both of their TERMINALS are respectively connected to each terminal of the other resistor or resistorsplz mark brainliest ♥️♥️♥️ |
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| 24. |
Explain Why? i) The Induced current is higher when the conductor cuts the magnetic field at 90 degree that when it cuts the field at another angle? ii) No induced Current is produced in a conductor moving parallel to a magnetic field? b) How does the distance between a magnet and a moving conductor affect the current induced in the conductor. |
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Answer» As we have SEEN, any change in magnetic flux induces an emf opposing that change—a process KNOWN as INDUCTION. Motion is one of the major causes of induction. For example, a MAGNET moved toward a coil induces an emf, and a coil moved toward a magnet produces a SIMILAR emf. |
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| 25. |
1) Which is the cross sectional area of neutral bus bar compared to phase busbar above 200 Acapacity? 200 A |
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Answer» Harmonic current is GENERATED by most modern ELECTRONIC LOADS, which can be found in all sectors of Industrial, Commercial, and domestic facilities. These electronic loads use power electronic devices which are RESPONSIBLE for generating harmonic currents. COMMON non-linear loads:Industrial equipment (Soldering machines, Induction furnaces, bridge rectifiers and battery chargers)Variable Speed Drives (VSDs) with AC or DC motorsUninterruptible Power Supplies (UPS)Information Technology Equipment (computers, monitors, servers, copiers, printers, etc.)Domestic equipment (TV sets, microwave ovens, fluorescent lamps, light dimmers, etc.).here is your answer ............... |
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| 27. |
What is the power of pump which takes 10s to lift 100 kg of water to a tank situated at a height of 20m ? |
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Answer» -Height of Water Tank = 20 metres.Mass of Water Tank = 100 kg. Time TAKEN by the pump = 10 seconds.Gravitational Constant = 10m/s²To Find :-Power of the pump. Solution :-We know that, Power = Work Done ÷ Time.Work Done = m. g. h.Put the values.➛ Work Done = 100 × 10 × 20.➛ Work Done = 1000 × 20.➛ Work Done = 20000 Joules.Now, Substitute the Values in the Power formula.➛ Power = 20000 ÷ 10.➛ Power = 2000 Watt or 2 Kw.Therefore, Power of the pump = 2 Kw. |
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| 28. |
ball is projected vertically upward rises to a height h and then returns back to thrower in time t. Is the acceleration of ball zero? |
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Answer» oia-vbrd-xey BALLIS PROJECTED in the MAJOR SOURCE of INDIVIDUAL |
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| 29. |
কোনটি খারীয়....লস্যি,খাবারসোডা,ভিনিগার,ফুচকার জল |
| Answer» SORRY I DONT KNOW this languagrExplanation:sorry i dont know this LANGUAGE | |
| 30. |
2 objects, one with a mass of m and one with a mass of 4mare attracted to each other by a gravitational force. if the force on 4m is F, what is the force on mass m in terms of F |
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| 31. |
A boby moving with a constant acceleration travels the distance 3m and 8m respectively in 1s and 2s calculate initial velocity and the acceleration of the boby |
| Answer» TION:ncfjzfhxvgxlgsi5dt9s96sglz94xmfzo5xo5stdpyr,O5,oregldpyapzot,SYL | |
| 32. |
Difference between the characteristics of ideal and non ideal op amp? |
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Answer» An “ideal” or PERFECT operational amplifier is a DEVICE with CERTAIN special characteristics such as infinite open-loop gain AO, infinite input resistance RIN, zero output resistance ROUT, infinite BANDWIDTH 0 to ∞ and zero offset (the output is EXACTLY zero when the input is zero). |
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| 33. |
See your face in spoon and write observation |
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Answer» The outer surface of the spoon Explanation:always forms an erect IMAGE of our face as it is a convex MIRROR....M ark Mark Brainlist Selected my Question Please 30.10 When you look at the back of a spoon you see an upright image of yourself. This is because the reflective curved surface of the metal acts as a diverging mirror. This image does tend to be DISTORTED because SPOONS SELDOM have the spherical or parabolic curvature required for an undistorted image. |
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| 34. |
Discuss the significance of Maxwell electromagnetic equation |
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Answer» DY HERE IS UR ANSWER ✌️✌️Maxwell first used the equations to propose that light is an ELECTROMAGNETIC phenomenon. An important consequence of Maxwell's equations is that they demonstrate how fluctuating electric and MAGNETIC fields propagate at a constant speed (c) in a VACUUM. ... The equations have two MAJOR variants. HAVE A NICE DAY IF FOUND HELPFUL MARK AS BRAINLIST AND THANX ME TOO.. |
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| 35. |
How the reflected rays will be in both the cases? Explain with the diagram (5marks) |
| Answer» TION:PLEASE FOLLOW me please MARK BRANLIST | |
| 36. |
What are the four types of motion. |
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Answer» HEY BUDDY HERE IS UR ANSWER ✌️✌️Types Of MotionWe might have noticed that different objects move differently. Some objects move in a curved path, some in a STRAIGHT path and a few OTHERS in a different way. According to the nature of the movement, motion is classified into THREE types as follows:Linear MotionRotary MotionOscillatory MotionHAVE A NICE DAY IF FOUND HELPFUL MARK AS BRAINLIST AND THANX ME TOO.. |
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| 37. |
6. Melting of wax is (A) Physical change(C) Both of these(B) Chemical change(D) None of these |
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Answer» of wax is a physical change.Explanation:When wax GET melted it can again be CONVERTED into solid wax by COOLING. |
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| 38. |
Who introduced Isotoinc exercisesHettingerMullerDe LormePerrine✍✍✍✍✍ |
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| 40. |
() On the basis of electron drift, derive an expression for resistivity of a conductor in terms of the number density of free electrons and relaxation time. On what factors does resistivity of a conductor depends?(ii) Why alloys like constantan and manganin are used for making standard resistors? |
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Answer» the basis of electron drift, derive an expression for resistivity of a conductor in terms of the numberdensity of FREE electrons and relaxation time. On what factors does resistivity of a conductor depends?(ii) Why ALLOYS LIKE CONSTANTAN and manganin are used for making STANDARD resistors? |
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| 41. |
What is meant by power of accomodation of the eye ? |
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Answer» f accommodation is the ability of the eye lens to focus near and far OBJECTS clearly on the retina by adjusting its FOCAL LENGTH. Power of accommodation of the eye is limited. It implies the focal length of the eye lens cannot be reduced beyond certain minimum limit.Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance VARIES. ... Fish and amphibians vary the power by changing the distance between a rigid lens and the retina with muscles.Hope this helps you , please mark as brainliest. |
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| 42. |
A 51-ft3 tank contains 3 lb.of gas at 800F and a vacuum pressure of 24 in.Hg. (a) What is the absolute pressure in psia and psfa? (b) What is the gas's specific volume and density? (c) What is its temperature in °C, °R, and °K? |
| Answer» EXPLANATION:huhggygygyuguygugyugfuyguyguyguyggu | |
| 43. |
Q11- Draw the glass slab and label incident angle refracted angle, emergent ray and lateral shift |
| Answer» TION:fyydydys55sfffzirsiiiifffffioffffffOIIIIOOOOXXXGIIIDIIIDZZZJJJJGJJJFJJJD | |
| 44. |
1. How can you fight the covid-19 using this frequency,intinsity, Time and type Principle? |
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| 45. |
Plss answer me fast.......................................................... |
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Answer» wer is 1/2 V how means first you MULTIPLE up SIDE one it comes 2 v then multiply down side you will get 6V then simplify you will get 1/2 v that's all |
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| 46. |
Calculate the current in the given circuit. |
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Answer» 8.8AExplanation:Given,2ohm and 3OHM R in SERIES the equivalent resistance is 5ohmThis 5 OHM is parallel with 6ohmSo 1/5+1/6=11/30V=IRI=V/R3/11/30=90/118.8 |
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| 47. |
20. How can we recombine the components of white light after a prism has separated them? Explain with the help of a neat diagram. |
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Answer» we can recombine it again, This can be done by placing two glass prisms side by side. But, place the SECOND glass prism in an inverted POSITION. When white LIGHT passes through first prism it disperses the light into seven colours and when this beam of light enters the second prism which is placed in an inverted position, a white light is obtained when it COMES out of the second prism. |
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| 48. |
Mention any 4 differences between speed and velocity |
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Answer» Speed is a scalar quantity and velocity is a VECTOR. Speed only determines the magnitude that is how FAST is a body MOVING whereas velocity determines the direction also that is in which direction the body is moving. Speed is the RATE of change of DISTANCE whereas velocity is the rate of change of displacement. |
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| 49. |
You and your friend ride a bicycle on the road, you will notice that at different times, both bicycles are found at different positions. Note down five positions at five time intervals foreach. a) Plot Position Time Graph for Uniform Motion b) Plot Position Time Graph for NonUniform Motion c) Calculate Velocity from Position Time Graph d) Calculate Distancetravelled by you and your friend in 10 Minutes e) Examine whose speed is more? |
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