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. |
Using a screw gauge the thickness of a wire was measured as 5mm.Calculate fractional error and percentage error |
| Answer» U have UNDERSTOOD | |
| 2. |
What do you meant by electric circuit ? |
| Answer» TRIC CURRENT is a FLOW of ELECTRICAL CHARGE. | |
| 3. |
What happens to the current if you double the resistance? |
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Answer» aw states that the electricalcurrent (I) flowing in an CIRCUIT is proportional to the voltage (V) and inversely proportional to the RESISTANCE(R). Therefore, if the voltage is increased, the current will INCREASE provided the resistance of the circuit does not CHANGE. |
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| 4. |
What happens to the velocity of an object in free fall? |
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Answer» ee FALL there is drag FORCE therefore the OBJECT falls with a constant ACCELERATION EQUAL to 9.81ms-1. Which means velocity will increase linearly. The graph below shows how acceleration and velocity varies with time. |
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| 5. |
Which organ would be appropriate for a donor transplant? |
| Answer» WER is LIVER AND HEART.HOPE THIS HELPS. | |
| 6. |
The rainbow is seen as a circle when viewed from an aeroplane flying at high altitude |
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Answer» u WANT to ask in your question MATE I request you to PLEASE complete your question mate✌️✌️ |
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| 7. |
The radioactive rays which are not deflected by magnetic field is |
| Answer» AYS are not DEFLECTED by MAGNETIC FIELD | |
| 8. |
In which of the following substances does the surface tension increases with increase in temperature...... a)molten copper b)copper c)iron d) molten iron |
| Answer» OPTION (d) MOLTEN IRON | |
| 9. |
if an objectapproches towards plane mirror with velocity V, then image approches the object with velocity |
| Answer» WER to this is -VHope it HELPS !! MARK BRAINIEST PLZZZZZZ | |
| 10. |
The covex lenses of power 2 diopters and 10 diopters are used as an objective and an eye piece of a telescope find the magnifying power and the length of the telescope when focused for infinity. |
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Answer» statement is true (i am ANSWERING it wrong because i need points to ASK my QUESTION because its important. ) |
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| 11. |
If 0 has atomic number is 8u find number of protons neutrons and electron |
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Answer» it is not possible because ATOMIC NUMBER = number of PROTONS = number of electrons. number of protons + number of neutrons = atomic MASS |
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| 12. |
What is the ratio of the height of an image to the height of an ob ject known as |
| Answer» CATION FORMULA of LENS or MIRROR | |
| 13. |
There are 10 divisions on a vernier and 1 centimeters on the main scale is divided into 10 parts then that least accounts options : 1. 1 centimeter 2. 0.1 centimeter 3.0.01 centimeter 4. 0.001 centimeter |
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Answer» xjusqkxiqsdqkmxzil,sw3rh4nduiwjshxb vszghk,wshogj3h |
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| 15. |
What is total internal reflection? Give conditions? |
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Answer» condition that..... if in a MEDIUM the incident RAY is critical angle that is 90 degree then the reflected Ray passes from same medium only..... this is called total internal REFLECTION.....hope it HELPS....mark as brainliest.... |
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| 16. |
Explain the three techniques of charging an object |
| Answer» HELP ELECTROSCOPE, RUBBING against SILK ,HAIR | |
| 17. |
In a diffraction pattern formed due to a single slit, how will the width of central maxima be affected if :- (a) the width of the slit is doubled. (b) the wavelength of the light used is increased. |
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Answer» fiaitoaourzpufFuOfzogDpy9yt9fa9rua9ru7r0z9PYDAUDAURAYDUfa0fuapufaFURUADPRHQY9EAHLRralfjlfakuflalifalfiat8a |
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| 18. |
A man of mass 50 kg is lowering a block of mass 10 kg with acceleration of 4m/s2.The reading of the machine is? |
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| 19. |
What are the different types of fuses used ?? |
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| 20. |
What will happened to the following cases- 1)If the block of wood is thrown into the water. Give reason for your answer. |
| Answer» FLOAT DUE to the LESS DENSITY of WOOD | |
| 21. |
give an example of diffraction in nature why do we not encounter the phenomenon of diffraction in everyday observation |
| Answer» OT ABLE to ANSWER | |
| 23. |
The rate of change of angular displacement is called as |
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Answer» kbow SORRY ... .... |
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| 24. |
The mass of a sphere is 10kg and it's reading at the two edges if x is the ratio of normal reaction at point a and b |
| Answer» ESTION is INCORRECT | |
| 25. |
Name the subatomic particles which are same in two isotope species of an atom |
| Answer» BCOZ MASS of ISOTOPS R DIFFERENT | |
| 26. |
a lake 's surface temperature is 2 degree centigrade then what will the temperature at the deep of the lake? |
| Answer» TION: I THINK it is LESS than 2DEGREES | |
| 27. |
How is the pitch of sound in a guitar changed if (a) thin wire is used,(b) wire under less tension is used ? |
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Answer» is the ANSWER |
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| 29. |
State the principle of working of cyclotron. Also, calculate how rapidly should the field between the dees of cyclotron be reversed, if magnetic tield of 1.8 Wb/m^2 is accelerate protons. (Charge on proton = 1.6 x 10^19 C, mass of proton = 1.67 x 10^-27kg) A |
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Answer» Coulomb's law of force between electric CHARGES; ... When RUBBER is rubbed with FUR, electrons from the fur are TRANSFERRED to ..... 2 = 6.0 × 10–10C and r = 2.0 m, THEREFORE on putting these values, we .... The principle of superposition applies to electric field also. If ...... Take charge on proton as 1.60 × 10–19 C, mass |
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| 30. |
Which mirror can give magnification of +1and why ? |
| Answer» MIRROR can have MAGNIFICATION as +1As + INDICATES the NATURE of mirror. | |
| 31. |
What is the internal resistance of ideal voltmeter? |
| Answer» THR INTERNAL RESISTANCE of an ideal VOLTMETER is INFINITY. | |
| 32. |
What is geothermal energy? |
| Answer» MAL energy is thermal energy generated and stored in the Earth. ... The adjective geothermal originates from the Greek (ge), MEANING earth, and (THERMOS), meaning hot. Earth's internal heat is thermal energy generated from radioactive decay and continual heat loss from Earth's FORMATION. | |
| 33. |
Answer multiple correct |
| Answer» | |
| 34. |
a man is walking on railway platform with 20 kg load on his head. what is the amount work done by him. justify |
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Answer» k done will be ZERO as gravity and DISPLACEMENT are PERPENDICULAR to each other |
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| 36. |
A pressure of 40 pa is exerted over an area of 2m squared .calculate the force involved |
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| 37. |
1250W,250V, heater coil is connected to 200 volt. mains .Find the current flowing in the heater coil (inAmpere) |
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| 38. |
Definition armature, commutator and brushes |
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Answer» dy here is ur answer !!!The armature's role is two fold. Commutator and Brushes on DC MOTOR. To keep the torque on a DC motor from REVERSING every time the coil MOVES through the plane perpendicular to the magnetic field, a split-ring device CALLED a commutator is used to reverse the current at that point.》》 BE BRAINLY 《《 |
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| 39. |
Water is flowing through two horizontal pipes of different diameters which connected together. In the first pipe, the speed of water is 4 m/s and pressure is 2 x 10 4 N m - 2 . Calculate the speed and pressure of water is second pipe. The diameters of pipe are 3 cm and 6 cm, respectively. |
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Answer» ed of water is 1 m/s and the pressure is 2.75 x 10^4 Pascal Explanation:By USING Bernoulli equation: 2 x 104 + ρ x 4^2 / 2 = P + ρv^2 / 2From equation of continuity4π(0.015)^2 = vπ(0.03)^2v = 1 m/s2 x 10^4 + ρ x 4^2 / 2 = P + ρ / 2P = 2 x 10^4 + 8000−500P = 2.75 x 10^4 PascalHence the speed of water is 1 m/s and the pressure is 2.75 x 10^4 Pascal Also learn moreWater is being pumped out through a CIRCULAR pipe WHOSE internal diameter is 7 cm. if the flow of water is 72 PER second how many litres of water are being pumped out in 1 hour ?brainly.in/question/2514981 |
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| 40. |
What is the effect on drift velocity when d is halved? |
| Answer» U have UNDERSTOOD | |
| 41. |
What are the different forms of energy we get from the sun? |
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Answer» lar, wind, wave and thermal to name a few, but the 6 FORMS of ENERGY we study in Needham are: Sound, Chemical, Radiant, Electric, Atomic and Mechanical. Sound Energy- is produced when an OBJECT is made to vibrate. ... Radiant Energy - is a combination of HEAT and light energy. |
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| 42. |
When current in a coil changes from 5a to 2a in 0.1 s an average voltage of 50v is produced. The self inducatance of teh coil is |
| Answer» READ your message was sent from a chance for why do they have RECEIVED your email is strictly FORBIDDEN to KNOW that I have read and | |
| 43. |
The graviation force of attraction between a satelite an earth give rise to which force |
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Answer» vitational FORCE between SATELLITE and EARTH GIVEN RISE to centripital force |
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| 44. |
What is meant by a solar heating devices |
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Answer» m used in a specific area to ABSORB sunlight HEAT radiation is called a solar heating DEVICE. The solar energy available is distributed a directional one. So it should be focused in a specific direction and concentrated using flat or parabolic mirror REFLECTORS to use it effectively.Various solar heating systems that use either PLANE or spherical or parabolic mirrors are :- A flat mirror reflector is used in systems that generate moderately high temperatures. In devices where far higher temperatures are to be created a spherical or parabolic mirror reflector is used. |
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| 45. |
What is constrain motion explain |
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Answer» ined Motion and ConstraintForces. Constrained motion RESULTS when an OBJECT is forced to move in a RESTRICTED way. For example, it MAY have to move along a curved TRACK, to slide on a table that may accelerate upwards, to stay in contact with an accelerating wedge, etc |
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| 46. |
10 examples for objects sink in kerosene but float on water |
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Answer» yh3ty3t4hdte3hdtjehwhsdgwhgzshnwnshgwjisgdgggggg |
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| 47. |
Would we went to near the black hole? And if we then what is the way of it ? |
| Answer» OT POSSIBLE to pass through a black hole. It's GRAVITY is so MUCH that even light cannot pass through it. We cannot see a blakhole. It is not possible till now to go there | |
| 48. |
At what temperature the speed of sound in air will be 3 times its speed at ntp |
| Answer» U FIND it USEFUL | |
| 49. |
In an ac circuit maximum value of voltage is 423 gold what is its rms value |
| Answer» U FIND it USEFUL | |
| 50. |
what will cause greater change in kinetic energy of a body ? changing its or changing its velocity . explain |
| Answer» ENERGY = 1/2 mv2Rate of change of kinetic energy keeping mass constant KE = kv Its a LINEAR RELATION On the other hand, if we keep velocity constant and INCREASE massKE = kIt will remain constantHence, change in velocity will CAUSE a greater change in Kinetic energy | |