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. |
The total no of electrons in the typically in the o |
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| 2. |
On mixing barium to sodium sulphate the color of the percipate formed is studyadda |
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Answer» Answer: The COLOUR of barium sulphate, like all Group 1 and Group 2 metal salts, is white as a solid or precipitate, and colourless when dissolved in WATER. ... For example copper (II) sulphate is blue and IRON (III) HYDROXIDE is reddish brow |
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| 3. |
Step by step explanation.....pls help me |
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Answer» Intial velocity of CAR (U) = 54 km/h = 54 × 5/18 m/s u = 15 m/s Car stops on APPLYING brakes 20m Displacement covered by car (S) = 20m Final velocity of car (v) = 0 Now V² = u² + 2aS = 0 = (15)^2 + 2 × a × 20 = -225 = 40a = a = -5.625 m/s^2 [ negative sign means that ACCELERATION is in OPPOSITE direction of motion of car ] acceleration = 5.625 m/s^2 |
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| 4. |
Define dielectric constant of a medium in terms of the force between two charges. |
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Answer» Answer: It is DEFINED as a quantity measuring the ability of a substance to store ELECTRICAL ENERGY in an ELECTRIC field CALLED dielectric constant. |
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| 5. |
How much torque is required to tighten nut of truck? |
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Answer» Answer: Several factors affect how MUCH tension occurs when a given amount of TIGHTENING TORQUE is APPLIED. The first factor is the bolt's diameter. It TAKES more force to tighten a 3/4-10 bolt than to tighten a 318-16 bolt because it is larger in diameter. Explanation: See the proper bolt torque chart. |
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| 6. |
Describe about submarines. How are they useful for every country's security? How does reflection help in it? |
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Answer» it GOES in WATER and not visible EASILY so it's NICE invention |
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| 7. |
Derive an expression for the potential energy of an electric dipole placed in a uniform electric field. |
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| 8. |
In which state of matter the force of cohesive is minimum ? |
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Answer» Answer: in gaseous STATE of matter cohesive FORCE is minimum Explanation: hope it will help youcomment me |
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| 9. |
Any physics experts are there to solve this .,......plssssss |
Answer» total distance BUS traveled20+30=50 kmtotal time = 2 hrsputting the values in fourmula 50/2=25 km/hrMARK ME Brainlist
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| 10. |
A car is moving with a velocity of 20m/s. The brake is applied to stop car with a retardation of 4m/s^2 on seeing a cow at a distance of 60m on the road. Will the accident be avarted? |
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Answer» yes Explanation: |
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| 11. |
give reason that tanks and Bulldozers are fitted with Caterpillar tracks rather than. plz ans me fast |
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Answer» GIVE reason that tanks and Bulldozers are fitted with Caterpillar tracks . Tanks and Bulldozers are fitted with Caterpillar tracks BCOZ. to increase the surface area. We know, P ressure is inversely proportional to area. So to reduce PRESSURE Caterpillar belts are fitted in TANKS and BULLDOZERS. ✔✔ Hope it helps ✔✔ ✨♥ Be Brainly...✌✌✌❤✨ ✔✔ PLEASE mark as the ✏✏ and ✏✏ if U liked ✔✔ |
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| 12. |
3. A car travels a distance of 50 km with a velocity of 25 km/h and then 60 km with a velocity 20km/h in thesame direction. Calculate (i) The average velocity of the car. (ii) The total time of journey |
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Answer» i)25+20/2=22.5 |
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| 13. |
Any physics experts is there to solve this.....plsssssss |
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Answer» Answer: |
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| 14. |
What is reference frame? |
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Answer» Answer: a FRAME of reference CONSISTS of an abstract coordinate system and the set of physical reference points that uniquely fix the coordinate system and STANDARDIZE MEASUREMENTS. In n dimensions, n + 1 reference points are SUFFICIENT to fully define a reference frame.❤️❤️❤️❤️ |
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| 15. |
Difference between uniform and non - uniform acceleration |
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Answer» heyy mate...!!! HERE IS UR ANSWER -- ◆In the case of UNIFORM acceleration , both the MAGNITUDE and direction of an object doesn't change with respect to time. ◆In the case of non uniform acceleration either magnitude or direction or both of an object changes with respect to time. 【OR】 ◆Uniform acceleration is the change of equal velocity in equal interval of time. ◆Non uniform acceleration is the change of UNEQUAL velocity in equal interval of time. ●Example of uniform acceleration - The motion of a ball rolling down. ●Example of non uniform acceleration - A CAR travels 2 km in 1st hour and 2.5 km in 2nd hour. thanks..!!! |
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| 16. |
A charge q is placed at the centre of the linejoining two exactly equal positive charges Q. Thesystem of three charges will be in equilibrium, ifqis equal to(1) -Q(2) Q/23. -Q/4(4) +Q |
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Answer» Answer: i think its opp (4) Explanation: becoz when V place a(-q) in the center it just attract the 2 CHARGES but when v place a +q in the center it just REPEL each other and they remain's in the equlibrium POSITION |
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| 17. |
D. An electric iron of 1100 w is operated for 2 hrs daily. What will be the electrical consumption expenses for that in the month of april? (the electric company charges rs 5 per unit of energy). |
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| 18. |
Write the precautions that one should take while measuring the length with a scale |
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| 19. |
C. Who will spend more electrical energy? 500 w tv set in 30 mins, or 600 w heater in 20 mins? |
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Answer» Answer: |
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| 20. |
How does kinetic energy depend 9n mass and speed? |
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Answer» Answer: the KINETIC ENERGY DEPENDS upon two factors: greater the mass of the body greater is the kinetic energy. 2. the speed of the body greater the speed of the body greater is the speed of the body |
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| 21. |
Insects can move on surface of water without sinking due to |
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Answer» Explanation: The insects can move in water WITHOUT sinking because they have HOLLO BODY |
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| 22. |
A lens forms the image of an object placed at a distance of 45cm from it on a screen placed at a distance of 90cm on other side of ita)name the kind of lens b)find the focal length of the lens and magnification |
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Answer» Here is the answer |
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| 23. |
Please solve the question/ answer |
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Answer» Answer: Explanation: Thermoset vs. Thermoplastics. ... The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics ALWAYS remain in a permanent solid STATE. Think of thermoplastics as butter – butter can be melted and cooled multiple times to FORM VARIOUS shapes. |
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| 24. |
Give reason for the statement that high rise buildings and dams have a wide base |
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Answer» because to GIVE them strength. Explanation: |
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| 25. |
With the help of a circuit derive an expression for the equivalent resistance of reistors connected in parallel |
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Answer» Answer: 1/R1 + 1/R2 + 1/R3 = 1/Rp now ADD the FRACTIONS and then SIMPLIFY it then RECIPROCAL it u will GET Rp Explanation: |
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| 26. |
The electric potential is constant in a region. What can you say about the electricfield there? |
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Answer» Answer:
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| 27. |
Why the electric field is always at right angles to the equipotential surfaceGive reasons |
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Answer» because ELECTRIC field go away from the charge +Q. and equipotential SURFACE has uniform potential all over the surface. so due to uniform potential it always go right angle |
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| 28. |
What does the slope of velocity – time graph give?(a) Distance (b) displacement (c) Acceleration (d) Change in velocity |
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Answer» Answer: (C) AccelerationHope it helpsplease MARK brainliest ✌️✌️ |
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| 29. |
Write 500 words about electromagnet. I will mark branlist to the best answer |
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Answer» Answer: A simple electromagnet consisting of a coil of wire wrapped around an iron core. A core of FERROMAGNETIC material like iron serves to increase the magnetic field created.[1] The strength of magnetic field generated is proportional to the amount of current through the winding.[1] Magnetic field produced by a solenoid(coil of wire). This drawing shows a cross section through the center of the coil. The crosses are WIRES in which current is moving into the page; the dots are wires in which current is moving up out of the page. An electromagnet is a type of MAGNET in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the center of the coil. The magnetic field disappears when the current is turned off. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic fluxand makes a more powerful magnet. The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly CHANGED by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field. Electromagnets are widely used as components of other electrical devices, such as motors, generators, electromechanical solenoids, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.[2] Also, an electromagnet is the part that is used to control the brakes on a pull behind camper, travel trailer, UTILITY trailer, or RV. This item is sometimes referred to as the “brake magnet” which is an electromagnet PLEASE MARK MY ANSWER AS BRAINLIEST AND FOLLOW ME |
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| 30. |
An object , 2 cm high ,is placed at a distance of 16 cm from the concave mirror which produces a real image 3 cm high .what area) the focal length b) the position of the image Pls pla pls answer |
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Answer» Here is the answer! |
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| 31. |
a car is starting from rest and moves with a constant acceleration of 2 metre per second in 10 second calculate the velocity of a car after 10 second |
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Answer» Given, Acceleration (a) = 2m/s Time TAKEN (t) = 10seconds initial velocity (u) = 0m/s (this is because the car was on rest) final velocity(V) = ? Now, 2 = v-0 10 = 2 X 10 = v - 0 = 20+0 = v =20m/s =v OR =v = 20m/s I hope it helped... pls leave a THANK you |
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| 32. |
What does area velocity time graph give?(a) distance (b) acceleration (c) displacement (d) may be positive or negative (d) none of the above |
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Answer» Answer: ACCELERATION because acceleration is EQUAL to velocity BYE TIME |
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| 33. |
When i am walking i saw a person is laying down in the roadside by am accidentcomplete this |
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Answer» REFER to the ATTACHMENTS |
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| 34. |
2. When an object is dropped from the peak of a tower, the object falls freely under gravity andtraverses S distance in n seconds. Then(A) S is proportional to n^2(B) S is proportional to n(C) S is proportional to 1/n^2(D) S is proportional to 1/n |
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Answer» 90tobemygirlwhoaretheprincipalsofphotovoltaic |
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| 35. |
Calculate the work done to take an object of mass 20kg to a height of 10m. |
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Answer» F = m × g = 20 × 10 =200 N we know that W= force × displacement = 200 × 10 = 2000 J |
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| 36. |
Each degree on the Kelvin scale equals how many degrees on the Celsius scale? |
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Answer» Answer: Explanation: 1kelvin ========== 273 KELVIN |
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| 37. |
How liquifcation is related to compresibilty factor? |
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Answer» Answer: The compressibility factor (Z), also known as the compression factor or the gas deviation factor, is a correction factor which DESCRIBES the deviation of a REAL gas from ideal gas behaviour. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure. It is a useful thermodynamic property for modifying the ideal gas law to account for the real gasbehaviour.[1] In general, deviation from ideal behaviour becomes more significant the CLOSER a gas is to a phase change, the lower the temperature or the larger the pressure. Compressibility factor values are usually obtained by calculation from equations of state (EOS), such as the virial equation which take compound-specific empirical constants as input. For a gas that is a mixture of TWO or more pure GASES (air or natural gas, for example), the gas composition must be known before compressibility |
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| 38. |
How circular motion is a special type of curvilinear motion? |
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Answer» Answer: In this type if the MAGNITUDE of acceleration is zero, the motion is uniform LINEAR motion. When the acceleration is not in the direction of velocity, the motion is along a curved path. ... CIRCULAR motion is a SPECIAL FORM of curvilinear motion. |
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| 39. |
13. A car increases its speed from 20km/h to 50 km/h in 10 seconds. Whatis its acceleration? |
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Answer» you can USE the ACCELERATION FORMULA |
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| 40. |
Derive 3rd equation of motion v square -u square =2as numerically? |
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Answer» V^2 = U^2 + 2as Explanation: 1) In FIRST line it is Distance COVERED = Area under SLOPE AB. |
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| 41. |
5 difference between distance travelled and displacement |
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Answer» hey mate here is your answer : Distance:
Displacement: |
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| 42. |
explain use of electricity in transport proper with in hundred words. I will mark branlist to the best answer |
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Answer» Answer: Electricity is a domestically produced transportation FUEL that will TRANSFORM our nation's transportation SECTOR. Today, the technology and infrastructure EXIST to promote transportation applications that move both people and GOODS using electricity as a fuel. Explanation: Please mark as brainliest and follow me |
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| 43. |
a ball is thrown up with velocity 10 ms it takes 5 sec to come down find the total distance travelled by the ball |
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Answer» Answer: 5 METRES Explanation: v^2=u^2+2as 10^2=0^2+2(10)(s) 100=20s s=5 metres |
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| 44. |
a train 100m long is to cross a river bridge. what time will it take to cross the bridge when it travels with a constant velocity of 36k/hr. |
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Answer» HII its tom85 s=100m v=36km/hr=36*5/18 m/s=10m/s t= s/v=100/10=10m __________/\____'_'____☺️ |
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| 45. |
What is mass defect and binding energy??no spam!!!!!!!!!!!!!!!!!!!!!.......wrong answer will be deleted.. |
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Answer» MASS DEFECT:- ============== The DIFFERENCE in the sum of masses of all nucleons present in a nucleus and the mass of the nucleus is CALLED MASS DEFECT ➭When a number of protons and neutrons (nucleons) combine together to form a nucleus , a small fraction of their masses is LOST which appears in the form of LET,
Z ➭ A ➭ ➭ Mass defect, Δm ➭ [Z ×
It is the energy with which nucleons are bound ➭The origin of binding energy is explained on the basis of Certain disappears in the form of energy, responsible for binding the nucleons together in the nucleus.
➭Where, C is |
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| 46. |
Newton's law???✌✌✌✌✌ |
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Answer» Answer Newton’s Laws of Motion: Newton studied the IDEAS of GALILEO and gave the three laws of motion. These laws are known as Newton’s Laws of Motion. Newton's First LAW of Motion: Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external FORCE. Second Law of Motion: The rate of change of momentum is directly proportional to the force applied in the direction of force. Newton's Third Law of Motion: There is an equal and opposite REACTION for evrey action |
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| 47. |
What are the types of motion |
Answer» EXPLANATION:There are mainly five types of motion.1)Linear motion or Rectilinear motion2)Circular motion or ROTATIONAL motion3)Oscillatory motion4)Curvilinear motion5)Random motionSome other motions are :1)Periodic motion2)Non -Periodic motion3)Uniform motion4)Non - Uniform motion |
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| 48. |
Calculate the speed of light in 1) glass 2) water. Refractve index of glass is 1.5 |
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Answer» The REFRACTIVE index of GLASS is 1.5. If the speed of light in a vacuum is 3* (10)^ 8 m/s, then what is the speed of light in glass? |
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| 49. |
Calculation of characteristics impedance when matching impedance and load impedance is given |
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Answer» ->> The CHARACTERISTIC impedance of an infinite transmission line at a given angular frequency is the ratio of the VOLTAGE and current of a pure sinusoidal wave of the same frequency travelling ALONG the line. ... This new ratio is CALLED the input impedance. |
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