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.
| 2. |
What is the length of single pendulum which ticks seconds? |
|
Answer» The length of the SIMPLE PENDULUM which TICKS seconds is 1M. |
|
| 3. |
A plano - convex lens of focal length 20 cm silvered at the plane surface will behave as convergent mirror of focal length (2) 30 cm(3) 40 cm(4) 10 cm |
|
Answer» in the CONVERGENT MIRROR the FOCAL LENGTH will be 40CM |
|
| 4. |
Define acceleration ???? |
|
Answer» Explanation:In physics, acceleration is the rate of CHANGE of velocity of an object with respect to time. An object's acceleration is the net result of all FORCES ACTING on the object, as described by Newton's SECOND Law. ... If the car turns, an acceleration occurs toward the new DIRECTION. |
|
| 5. |
Iron man is moving in his suit with a speed of 250 Km/hr. How much distance will he cover in 1 minute and in one second |
| Answer» | |
| 6. |
Define ampere resistance and charge. |
| Answer» 1 ampere is defined as 1 coloumb of CHARGE per second. An ampere is a UNIT of measure of the RATE of electron flow or current in an electrical conductor. | |
| 7. |
What is diffusion and compressibility? |
|
Answer» COMPRESSIBILITY;Compressibility is the measure of RELATIVE volume ,change of a fluid or solid as a response to pressure change.DIFFUSION: Diffusion is the MOVEMENT of PARTICLES from region of high concentration to region of LOW concentration. |
|
| 9. |
24. Solve the numerical given below: * (2 Points) What is the weight of a 7 kg child on Earth? [Take g = 10 m/s?) O 70 kg O 70 g Ô 70 N ON 25. The relation |
| Answer» 70 NExplanation:w=mass* gravityw= 7KG * 10m/s | |
| 10. |
In oscillating pendulum it's acceleration "a" is directly proportional to |
|
Answer» nition, if a mass m is under SHM its acceleration is directly proportional to displacement. and, SINCE T = 1F where T is the time PERIOD, These equations demonstrate that the SIMPLE harmonic motion is isochronous (the period and frequency are independent of the amplitude and the initial phase of the motion). |
|
| 11. |
A An object is placed 32cm in front of a concate mirror. A sharp image isobtained on a screen placed 96cm away from the mirror. Find the focal length ofthe mirror and the nature of the image. |
|
Answer» jsjExplanation:djdjjddhrhdhd ydyddydyydydgrr MI ufoycjpxtidcgispvhpdoy aahe mhanun mi tyala vicharle asata tyanni sangitale ki TU MALA aavadtos aani aahe mhanun mi tujhyavar y aahe ase pratipadan he antim TARIKH |
|
| 12. |
What do you understand by ASTC rule |
|
Answer» The abbreviation for 'all SIN COS TAN' rule in trigonometry is ASTC. ... The first letter of the third WORD T indicates that tangent and its reciprocal is positive in the third quadrant. The first letter of the last word C indicates that cosine and its reciprocal are positive in the fourth quadrant. |
|
| 13. |
Y = 0 in second line. |
|
Answer» The lungs are a PAIR of SPONGY, air-filled organs located on either side of the chest (thorax). The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called BRONCHI. The bronchi then divide into smaller and smaller branches (bronchioles), FINALLY BECOMING microscopic. |
|
| 14. |
What is the vector form of coulombs law? fllw me for fllw bck guys |
|
Answer» Problems with Vectors and Coulomb's Law. Coulomb's Law, which calculates the electric FORCE between charged particles, can be written in vector notation as F(E)=kq1q2r2 F ( E ) = KQ 1 Q 2 r 2 r+. |
|
| 15. |
Derive the expression for parallel combination of resistors using suitable activity. |
|
Answer» The TOTAL voltage across the resistors is given by V = R1+R2. When resistors are connected across each other in a CIRCUIT, they are said to be connected in parallel COMBINATION. The total resistance across the voltage is given by 1/R = 1/R1+1/R2. |
|
| 16. |
Answer the question in the image. |
|
Answer» A BOMB of mass 4 kg is exploded such that 1/3 rd of the mass moves with the SPEED of 400 m/s towards right then what will be the speed and DIRECTION of remaining half of the mass.Explanation:answertherefore the ANSWER is mark as brainllest\ |
|
| 17. |
Write note electric cells in series? |
| Answer» CELLS generate electricity and also derives chemical reactions. One or more electrochemical cells are batteries. Every cell has two terminals namely:ANODE: Anode is the TERMINAL from where the current flows in from out i.e. it provides an incoming channel for the current to enter the CIRCUIT or the device.Cathode: Cathode is the terminal from where the current flows out i.e. it provides an outgoing current flow from the circuit or the device.There are two simplest ways for cell connectivity are as follows:SERIES Connection: Series connection is the connectivity of the components in a sequential array of components.Parallel Connection: Parallel connection is the connectivity of the components alongside to other components. | |
| 18. |
Е A cartotravell at 20 km/h Speeds upling60 km/h in 6 Oseconds. What is its accelegation? |
| Answer» KNOW this ANSWER | |
| 19. |
B Check the correctness equation 7 = 20 I time g l length g acceleration due to gravity |
|
Answer» fExplanation:5uegscahabcdhenwvskajdgejahxaysjwvakxcjwksvshsjvsjshsvshs svshscwhabsvuskabaidkevatrjcssFrtgrtzk KE hdjeubsvxgsnavsvs |
|
| 20. |
If the pitch of sound is increased what will be the change in amplitude of sound waves |
| Answer» AMPLITUDE will INCREASE. Amplitude will DECREASE. Amplitude will REMAIN the same. | |
| 21. |
Prove that newton second law of motion is dimensionally correct |
|
Answer» F=ma The MATHEMATICAL EQUATION of Newton's 2ND law. Where m is mass of the object and a is the acceleration. Acceleration, a=v(velocity)/t(time),its S.I. unit is m(metre)/s(second)^2 Where v=s(displacement)/t(time),its S.I.unit is m/s. Displacement is defined to be the change in position of an object. It can be defined MATHEMATICALLY with the following equation. ∆x=xf-xi ∆x-Displacement xf-final position of the body xi-initial position of the body Displacement's S.I. unit is metre(m) ,which is a dimension. Displacement is a vector quantity.Explanation: |
|
| 22. |
A simple pendulum consisting of a small heavy bob attached to a light string of length 40 cm is released from rest with the string at 60° to the downward vertical. Find the speedof the bob as it passes through the lowest point. |
| Answer» WER to your QUESTION is in in this PIC..HOPE this HELPS :) | |
| 23. |
Please help me out fast very urgent |
| Answer» TION:(i) ZERO work is defined when force and DISPLACEMENT are perpendicular to one another and when force or displacement is zero. Example: The force ACTS in a downward direction, ... When displacement operates in the forward direction.(ii) When force and displacement are in the same direction, the work performed on an object is said to be positive work. Example: When a body moves on the horizontal surface, force and displacement act in the forward path. The work is done in this case KNOWN as Positive work.(iii) Negative work is performed if the displacement is opposite to the direction of the Force applied. Example: Work was done the gravity on a rocket going perpendicular upwards. | |
| 24. |
Three resistors 3,6,9 Ω are connected to a battery. What is the ratio of power dissipated in them (in the given order) if they are all connected in parallel? |
| Answer» TION:HOPE THIS HELPS YOU!! :D | |
| 25. |
discuss in brief the various techniques employed to measure very small and very large distances with the distant star so great a parallax any a staff on the same basis |
| Answer» EXPLANATION: | |
| 26. |
The force equal and opposite to action force |
|
Answer» tion:Formally stated, Newton's third LAW is: For every action, there is an equal and OPPOSITE reaction. The statement means that in every INTERACTION, there is a pair of forces acting on the TWO interacting objects. The size of the forces on the first object equals the size of the FORCE on the second object. |
|
| 27. |
What is the acceleration due to gravity With the mass 100 g dropped from a height of 400 m towards the earth's Surface. (Mass of the earth is 6x 10^24 and radius is 6380 km )? |
|
Answer» tion:Draw a quadrilateral, which is parallelogram of adjacent sides of 3CM and 4CM with the diagonal 5CM. Write STEPS of construction |
|
| 28. |
A violin string vibrates with the fundamental frequency of 510 Hz. What is the frequency of the first overtone? ((no spam pleeeeease)) |
| Answer» HELPS UH ✌️✌️✌️ | |
| 29. |
Formation of shadow if the light source and the opaque object is the same size Umbra or Penumbra? |
|
Answer» Explanation:As the DISTANCE between the OPAQUE object and light SOURCE increases, the umbra also increases. |
|
| 30. |
The frequency of sound in a medium is "f" and velocity "v", if frequency in same medium becomes "4f" then velocity will be: (FBD. GII, 2019) (A) v (B) 2v (C) 3v (D4v |
|
Answer» The frequency of sound in a MEDIUM is "f" and VELOCITY "v", if frequency in same medium BECOMES "4F" then velocity will be 2v |
|
| 31. |
Tick the correct batao plz yaar sahi sahi batana |
|
Answer» tion:1. C2. 3. B4. D5. A6. C7 . A8. D9. B10. A11. C12. C13. B |
|
| 32. |
Tick the correct batao plz yaar sahi sahi baatana 1 ghante ke andar |
|
Answer» he PROCESS by which GREEN PLANTS MAKE their FOOD on their own. |
|
| 33. |
Problems for Practice wto 1. A boy is moving in a circle of diameter 5 m. Caleulate the distance covered and the displacement when completes 4 revolutions |
| Answer» DISPLACEMENT will be 0 PLEASE MARK as BRAINLIEST | |
| 34. |
1) Why is silver the best reflector ? 2) What happens if 2 rays of light collide with each other ? 3) Why air doesn't reflect light and if it does why cant we see it ? 4) Why do a person standing on the earth sees a blue sky ? 5) why is that if their is no atmosphere we will see a black sky |
| Answer» SORRY I didn't UNDERSTAND | |
| 35. |
A ball is dropped from a roof of a building can reach at ground in 5 sec. If ball is stopped after 3 sec of its fall and then allowed to fall again, then find the time taken by the ball to reach ground for the remaining height. ?? plz I need the answer |
| Answer» TION:APPROX 10-20secor ACCURATE 16SEC | |
| 36. |
State the minimum distance, mass, energy and charge mesured by indirect method. |
|
Answer» The charging of micrometer-sized droplets in an electric field was examined experimentally using both direct and indirect droplet-charge measurements. LIQUIDS with different dielectric constants (water, ethanol, and mineral oil) were studied. A specially designed low-noise charge detector was used directly to measure individual droplet charge. The total charge and droplet mean charge for an ensemble of droplets were obtained indirectly by current measurements. These were coupled with phase-Doppler anemometer droplet diameter, VELOCITY, and flux measurements. Individual droplet charge also was determined indirectly via droplet trajectory analysis coupled with high-speed digital PHOTOGRAPHY. All three methods were COMPARED. In general, the droplet charge was found to depend on its POSITION inside the charger, its dielectric constant, and the magnitude of the applied electric field.Explanation: |
|
| 37. |
Match the followinggshjghdjhdhsihdhskh |
|
Answer» 1.g2.e3.j4.f5.i6.h7.a8.d9.c10.b |
|
| 39. |
How far down the road has B and traveled when A start the journey |
|
Answer» pls MARK me as BraniliestExplanation:the process by which GREEN plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. PHOTOSYNTHESIS in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product. |
|
| 40. |
what are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series (not copied answer needed) |
|
Answer» so that the ENERGY MAY be consumed by all the APPLICATIONS EQUALLY and all may run properly.Explanation:hope it is what you want |
|
| 41. |
For the circuit as shown in the figure, the net charge on upper plate will be (Area of each plate is A and separation between two consecutive plates is d) |
| Answer» SORRY i can't FIND this QUESTION | |
| 42. |
When an inductor comes close to a metal than its frequency increases or decreases? |
| Answer» PLEASE FOLLOW and FOLLOWING | |
| 43. |
Cylinder of radius 7 cm , height 14 cm andweight 2kg. Find the density |
| Answer» GIVEN: Radius=7cm,Height=10cmTotal SURFACE area=2πr(h+r)sq.units=2× 722 ×7(10+7)=44×17=748sq.cm | |
| 44. |
What is trasnformer?explain step up and step down transformer |
|
Answer» A transformer designed to INCREASE the voltage from PRIMARY to SECONDARY is called a step-up transformer. A transformer designed to reduce the voltage from primary to secondary is called a step-down transformer. |
|
| 45. |
Which of the following substance has the greatest density? a. aluminum. b. water. c.oxygen. d.air |
| Answer» | |
| 46. |
what is stomata?my name is rohan this is my di account she gave it to me now i am owner of this account now di |
|
Answer» Explanation:Stomata are tiny OPENINGS or PORES that enable gaseous EXCHANGE. Stomata are usually found in plant leaves, but they can also be found in some stems. When it does not need carbon dioxide for photosynthesis, the plant closes these pores. The stomata in plants are enclosed by BEAN shaped CELLS called guard cells. |
|
| 47. |
weight of a man on earth surface is 700n gravitational field strength on moon surface is 1/6th gravitational field strength on earth surface. Calculate weight on moon surface g earth= 1Nkg to the power -1 |
|
Answer» The velocity of an object is the RATE of change of its position with respect to a frame of REFERENCE, and is a function of time. ... Velocity is a physical VECTOR quantity; both MAGNITUDE and DIRECTION are needed to define it. |
|
| 48. |
See this picture..and answer |
| Answer» | |
| 49. |
a particle covers a circular track of radius r, what is the distance and displacement after two and a half revolution. |
|
Answer» particle COVERS HALF of a circle of radius r, then displacement is =DIAMETER =2r and the distance = half of CIRCUMFERENCE of circle =πr. |
|