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. |
An object in shm oscillates with a period of 4.0s and an amplitude of 17 cm . How long does the object takes to move from 0 to 5.2 cm |
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Answer» # ANSWER- 0.2s |
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| 2. |
Explain mirror formula |
| Answer» MIRROR FORMULA is the relationship between object DISTANCE (u), image distance (v) and FOCAL LENGTH. Mirror formula for concave Mirror = 1/f = 1/v + 1/u. | |
| 3. |
An annular disc has a mass m, inner radius r and outer radius r 2 . The disc rolls on a flat surface without slipping. If the velocity of the center of mass is v, the kinetic energy of the disc is |
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Answer» Total kinetic ENERGY = linear kinetic energy + rotational kinetic energy |
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| 4. |
What is the expelltion of led nitrate after a reaction with a single reactive pigment |
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Answer» Originally Answered: Which two gases are released on HEATING lead NITRATE? When heated, lead(II) nitrate crystals decompose to lead(II) oxide, OXYGEN and nitrogen DIOXIDE. ... What happens when lead nitrate crystals are heated in a dry TEST tube? |
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| 5. |
An aeroplane is moving horizontally with velocity of u. It drops a packet from a height h. The time taken by the packet in reaching the ground will be |
| Answer» USE FORMULA S=ut+1/2at² | |
| 6. |
Short note on Am modulator |
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Answer» Amplitude modulation (AM) is a modulationtechnique USED in electronic communication, most commonly for transmitting information via a RADIO carrier wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave is varied in proportion to that of the message signal being transmitted. The message signal is, for EXAMPLE, a function of the sound to be reproduced by a loudspeaker, or the light INTENSITY of pixels of a television screen. This TECHNIQUE contrasts withfrequency modulation, in which the frequencyof the carrier signal is varied, and phase modulation, in which its phase is varied. |
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| 7. |
Name the electro magnetic radiation used for water purification and eye surgery |
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| 8. |
Define reflection. explain the laws of reflection with suitable diagram |
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Answer»  |
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| 9. |
Why do alpha particles affect the least penetrating power |
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Answer» Beta particles have a mediumpenetrating power - they are stopped by a SHEET of ALUMINIUM or plastics such as perspex. Beta particles ionise atoms that they pass, but not as strongly as alpha particles do. This means that they have no MASS and no charge. ... Alpha particles are easy to STOP, gamma RAYS are hard to stop. |
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| 10. |
A force of 2i+3j+4k n acts on a body for 4 sec and produce a displacement of 3i+4j=5k m.The power used is |
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Answer» power=work DONE / time p=F.S/t f.s=2i+3j+4k . 3i+4j+5k = 16+12+20=38 w=38 t=4 p=38/4 =9.5
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| 11. |
Can we flow water from low surface to high without a motor |
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Answer» No, I THINK that water can't FLOW from LOW surface to higher surface without a MOTOR |
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| 12. |
How is the kinetic energy of a moving cart affected if its velocity is reduced to 1/3 of its initial velocity |
| Answer» HOPE U will be UNDERSTAND | |
| 13. |
a cell of potential difference 12v is connected to a bulb with 12ohm. find the current drawn from the cell and the time taken for which it is working.find out the time to transfer 2 c charge |
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Answer» V= 12v R=12 ohm I =V/R = 12/12 = 1 A I= Qt 1=2t t= 1/2 = 0.5s |
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| 14. |
Wha tis angle of shear ? |
| Answer» DEFINITION of ANGLE of SHEAR. The ANGLEBETWEEN the planes of maximumshear, which is bisected by the axis of greatest compression. | |
| 15. |
Which measures the variation among grays and refers to the darkness or lightness of a color. |
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Answer» # Answer- value indicates lightness or darkness of a color |
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| 17. |
............................................❓❓personality and attitude??❓❓✔️Both r same or different??explain??❎ |
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Answer» Both are diffrerent PERSONALITY meansthe combination of CHARACTERISTICS or qualities that form an INDIVIDUAL's distinctive character. and attitude means a EGO that i am best |
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| 18. |
Discribe between autotropic and heteropic nutriton |
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Answer» AUTOTROPHIC in MAKE their FOOD own. Heteripic in which DEPEND on other |
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| 19. |
What is force define briefly |
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Answer» Force is DEFINED as MASS PER UNIT volume. |
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| 20. |
According to heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1 × 10–31 kg is |
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Answer» According to Heisenberg's uncertainty principle |
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| 21. |
Explain about law of conservation of energy |
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Answer» The LAW of conservation of energy is a law of science that states that energy cannot be created or DESTROYED, but only CHANGED from one form into ANOTHER or transferred from one object to another. |
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| 22. |
The weight of a body is 50 and what is its mass. g9.8 m/s2 |
| Answer» APPROX MASS of body=50/9.8=5.10 | |
| 23. |
What kinetic energy of a neutron will be associated with |
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Answer» The KINETIC energy of a NEUTRON will be associated with its mass and velocity. Kinetic energy of a PARTICLE is GIVEN by the EQUATION |
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| 24. |
Friction is both good and evil to human explain with examples |
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Answer» Without friction we can't even walk so in way friction is very USEFUL for us.But due to friction our lots of ENERGY loss in form of HEAT. |
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| 25. |
What is the example of renewable and non renewable sources |
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Answer» RENEWABLE:FIRE,Trees Non Renewable:COAL,PETROLEUM |
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| 26. |
A person having a myopia eye uses a concave lens of focal length 10 cm. what is the power of the lens? |
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| 27. |
What is the relation between surface tension and capillary action |
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Answer» The surface TENSION acts to HOLD thesurface intact. Capillary action occurs when the adhesion to the surfacematerial is stronger than the cohesive FORCES between the water MOLECULES. The height to which capillary actionwill take water is limited by surface tension and gravity. |
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| 28. |
€˘ what is the process of work done in free expansion called? |
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Answer» free expansion is an irreversible process in thermodynamics in which a volume of GAS is KEPT in one SIDE of a thermally isolated container (VIA a small PARTITION), with the other side of the container being evacuated. |
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| 29. |
A body is in rotational motion is it necessary that a torque be acting on it |
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Answer» YES, In every BODY which performs rotational motion the torque acts on it. For EG., you may refer the Pendal of BICYCLE or a stearing of a car. Hope you got it...... |
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| 30. |
Abbes principle of alignment to be followed in in which instruments |
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Answer» The Abbe's PRINCIPLE of alignment is named after the GERMAN Professor EARNST ... On the other hand, MICROMETERS follow the principle. |
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| 31. |
Answer this with step.... |
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Answer» In this questions the triangle is formed |
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| 32. |
Earth rotates around sun in elliptical orbit .at which point will velocity be maximum |
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Answer» At POINT a because the SPEED any will INCREASE when it CLOSE to the SUN |
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| 33. |
What are the condition under which Ohm's law is not obeyed |
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Answer» HELLO FRIENDS |
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| 34. |
Hey friends.....Good morning .....The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why? Don't spam |
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Answer» First Law of Conservation of energy states that "Energy can NEITHER be created nor destroyed". |
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| 35. |
Which wire is used in solenoid??? |
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Answer» HELLO MATE HERE IS YOUR ANSWER ---------------------------------------------------------------------------------- generally, copper WIRE is used in SOLENOID. HOPE IT HELPS THANK YOU -SHIVAMSHAURYA |
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| 36. |
What happens if gravity not present in earth? |
| Answer» EVERYTHING will FLOAT in the ATMOSPHERE if gravity will not be present in EARTH.... | |
| 37. |
How much time it take for rocket to go into space |
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Answer» Hey mate .... |
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| 38. |
How can we use solar energy to generate electricity on a large scale ? |
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| 39. |
Write the unit of electical energy in m.k.s system |
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Answer» MKS unit of energy, equal to the force of one Newton acting through one METER. 1 WATT is the POWER from a CURRENT of 1 AMPERE flowing through 1 Volt. 1kilowatt-hour is the energy of onekilowatt power flowing for one hour. |
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| 40. |
Explain gauss theoram , with diagram !!!!!!! plz give ANSWER fastly..... |
| Answer» LAW karl Friedrich gauss a German mathematican GAVE a law named after him that GIVES the RELATIONSHIP between the ELECTRIC | |
| 41. |
How much charge be on one electron |
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Answer» 1.6×10-19 C.......... |
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| 42. |
Can life ever exist on moon? justify your answer. |
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Answer» HII |
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| 43. |
What is until of electric potential difference(A)volt(B)Coulomb(C)volt joule(D)watt |
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Answer» I THINK it HELPS you. |
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| 44. |
list four factor which play a vital role in formation of soil. according to class 9 chapter natural resources |
| Answer» HUMUS,WATER,SUNLIGHT,EQUAL DISTANCE | |
| 45. |
Double fertilizetion isa unique feature of.(A) Root(B)Stem(C)Leaf(D) Seed |
| Answer» DOUBLE FERTILIZATION IS A UNIQUE FEATURE OF SEED. | |
| 46. |
☆Hiiii friends...plzz answrr ... this question. .○Give the various causes that results in an earthquakes .explain how the movement of tectonic plates cuses an earthquake. |
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Answer» There are many things inside earth which constantly apply pressure TOWARDS there adjacent surface which is made up of tectonic plates. tectonic plates have their limits to be PRESSURISED when this pressure goes above the limit plates slide over ONE another which results in earthquake. this pressure is MOSTLY because of lava present inside earths surface. |
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| 47. |
Diference between deviation and refraction |
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Answer» All dispersive materials will REFRACT light. The key difference between the TWO is that DISPERSION is referring to the frequency dependence (which is the ABILITY to separate different colors of light) while refraction is referring to the bending of light in a material. |
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| 48. |
What happens to an electric field around a single charge when a charge is added to system? |
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Answer» DIFFERENCE between DEVIATION and REFRACTION |
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| 49. |
Yif your are given three equal resistance . In how many way can they be arranged |
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Answer» |
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| 50. |
Two particles have equal Momenta what is the ratio of their de borgli wavelength |
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Answer» ⭐⭐ Hey MATE!⭐⭐ ✍️__________________________________________________________ As, LEMBDA(wavelength) =h/p h =planks CONSTANT If there momentum (p) is constant.. Then there de-brogli wavelength must be equal. Hope it will HELP you.. #phoenix |
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