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. |
From a hemisphere of radius R a cone of base radius R/2 and height R is cut as shown in figure . the height of centre of mass of the remaining object is x/yR ,find x+y/13 |
| Answer» | |
| 2. |
Define average speed. what are it's unit.how it can be measured |
|
Answer» Average speed is defined as the total distance travelled by the time taken whereas average velocity is defined as the DISPLACEMENT by the time taken. Since speed is a scalar quantity, the average speed is also considered as a scalar quantity while velocity is a vector quantity.Speed is a measure of how fast something is travelling. The most common units of speed are metres per second (m/s), kilometres per hour (km/h) and miles per hour (mph). In a typical car journey the speed of the car will change. The distance divided by the time will calculate the average speed of the car.Explanation:Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday USAGE is the kilometre per hour or, in the US and the UK, miles per hour. For air and MARINE travel the knot is commonly used. SI unit: m/s, m s−1 Common symbols: v Dimension: L T−1 |
|
| 3. |
In pure capacitor the voltage________ |
| Answer» LAGS CURRENT by 90° in a PURE CAPACITIVE CIRCUIT. | |
| 4. |
A solid weighs 30gf in air and 25gf when completely immersed in water. Its density is |
|
Answer» weight of solid in air = 30 gf and weight of solid in liquid = 26 gfRD of liquid = 0.8Therefore, DENSITY of liquid = 0.8 G cm‐³(i) Let V be the volume of the solid.Weight of liquid displaced Volume of liquiddisplaced xdensity of liquid x g = V x0.8xg DYNE = V x0.8 gfLoss in the weight of the solid when immersed in THELIQUID = 30 - 26 = 4gfBut the weight of liquid displaced is EQUAL to the loss in weight of the solid when immersed in liquid.Therefore, Vx0.8 = 4 or V = (ii) Given, weight of solid = 30gf Therefore, Mass of solid = 30 gDensity of solid=Hence relative density of solid = 6 |
|
| 5. |
7) We can expect the force of friction to be greater of an object moving on a surface ifa) smooth and object is heavierb) rough and object is heavierc) smooth and object is lighterd) rough and object is lighter |
| Answer» OPTION B is your ANSWEREXPLANATION:HOPE it will HELP you | |
| 6. |
The relationship between Young’s modulus (E), Modulus of rigidity (C) and Bulk modulus (K) is given by |
| Answer» TION:The relation between young's modulus Y, bulk modulus K, and modulus of ELASTICITY σ is 3Y=1η+13K. | |
| 7. |
38.In G.P. Thomson experiment, electron beaves like wave, because it (1 Point)a)has high velocityb)is diffractedc)has lighter massd)has momentum |
| Answer» OPTION a is the CORRECT ANSWER | |
| 8. |
A body travels 20km at a speed 40km/hr & the 30 km at a speed 60 km/hr. Find its average speed . |
| Answer» | |
| 9. |
The direction of the free positive test charge will be the direction of select one, A. ELECTRIC intensity B, COULOMB'S law C, Magnetic intensity D, protons |
|
Answer» vvyy the FOLLOWING ENDANGERED SPECIES of the following endangered species of the figjgigggiyjghu the following endangered species of the DAY and |
|
| 10. |
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, nearby sphere. Both spheres can be treated as particles. For what value of q/Q will the electrostatic force between the two spheres be maximised? |
|
Answer» Explanation:SEE GUYS this is it i SOLVED it for you CHECK it out and MARK me briliant pls |
|
| 11. |
03. A 4 gasin contained in a cylinder withmovable piston. The pressure exertedby the gas is 2000 pa. The area of thepiston is 6500cm². Find the force actingon the piston. |
|
Answer» tion:Here movable piston in contact with pressurised gas in the cylinder ,does the COMPRESSION work for which we have to consider contact AREA of piston which has to move against the gas PRESSURE , therefore force of moving piston F ( NEWTON/m2 ) would be equal to : Area of piston 0.5 m2 X Pressure of gas 300 pascal( which is 300 newton/m2) = 150 newton |
|
| 13. |
© Slechoose correct order of magnitude inin creasing fashion(1) Atom, nucleus, quarks,String(2)nucleus,atom, string, quarks(3)String, quarks, nucleus, atom(4) String, atom, quarks, nucleus |
| Answer» 2ND one I HOPE this HELPS u friendPlz mark as BRAINLIEST | |
| 14. |
Explain the detail purpose/ use of striking tool with neat sketch |
|
Answer» !!!WHETHER you're redoing an old TILE floor or getting into WOOD carving, you'll need striking tools. Very practical for marking or cutting away material (wood, stone, PVC etc.) as well as dislodging small components such as PINS from machinery, striking tools will make your life easier in a wide variety of situations! |
|
| 15. |
5. A girl is carrying a school bag of 3 kg mass on her back and moves 200 mon a levelled road. The work done against the gravitatioral force willbc (g=10 ms)(a 6 *10- J(b) 6J(d 0.6J(d) zero |
| Answer» ZERO because the angle between bag and displacement is COS90 which EQUALS to zeroExplanation:hope it will HELP you | |
| 16. |
Guys i have a lot of confusion in average velocity. My teacher would kill me if i dont answer today. Explain me about the average velocity with 1 example please guys |
|
Answer» Average velocity indicates direction and can be represented as a negative number when the displacement is in the negative direction. For example, SOMEONE who takes 40 minutes to drive 20 miles north and then 20 miles south (to end up at the same place), has an average SPEED of 40 miles divided by 40 minutes, or 1 mile per minute (60 mph). Average velocity, however, involves total displacement, instead of distance.Explanation:In SHORT Average velocity is defined to be the change in position divided by the time of travel. |
|
| 17. |
Define triangle law of addition and derive equation forresultant vector by triangle law |
|
Answer» Triangle law of vector addition states that when two vectors are REPRESENTED as two sides of the triangle with the order of magnitude and direction, then the third side of the triangle represents the magnitude and direction of the resultant vector.Explanation:hope it HELPS....MARK as BRAINLIEST |
|
| 18. |
two forces are acting on the body of mass 10 kg in opposite direction . one force is of 100 N if frictional force is 10 N and body is moving in the direction of application of first force with acceleration of 2 m/s2 . find another force acting on body |
| Answer» ASSUME the second FORCE to be F . Since the body is MOVING in the DIRECTION of application of first force , the second force and the frictional force will be opposing in NATURE. Hence the net opposing force will be ( F + 10 ) N. | |
| 19. |
What is parallax method and how it is used to measuredistance |
| Answer» HELLO MATE the above is.your ANSWER. | |
| 20. |
Convet 1 dyne into network using dimensional analysis |
|
Answer» the DIMENSIONAL FORMULA of force f=[MI li t-2]so,a=I,b=I,c=-2m1=1I m2=1ql1=I'm l2=1cmt1=1oec t2=I secn1=1 newkon N2=?using the formub n2=n2[m1]a[l1]b |
|
| 21. |
What is induced current |
|
Answer» The CURRENT INDUCED in a conducting loop that is EXPOSED to a CHANGING magnetic field is known as induced current. |
|
| 22. |
Write four properties of Nylon that makes it a popular fibre for making clothes |
|
Answer» 1)Nylon fibres are very strong,fairly elastic,lightweight and lustrous. 2)Nylon fibres ABSORB very LITTLE water,so clothes made of nylon are easy to wash and dry. 3)Nylon is WRINKLE resistant. 4)Nylon fibres have high abrasion resistance,so they are very durable. |
|
| 23. |
What is the necessary theory for the experimental determination of the wavelength of light from a sodium lamp by Newton's ring method. How can you determine the refractive index of a transparent liquid using this arrangement? I need a detailed answer please. |
| Answer» TION:MARK BRAINLIST follow=followHope it HELPS | |
| 24. |
Write any two limitations of demionsal analysis |
|
Answer» thod does not tell US how to determine the proportionality constant value. The method cannot be considered to derive composite relations. Examples s = ut + 1/2 AT2 and 2as = v2 – u2. A formula CONTAINING TRIGONOMETRIC function, exponential function, and logarithmic function can not derive from it. The method cannot be used to derive the relationship between more than three quantities. |
|
| 25. |
ek gaon se baniyon ki baarat jaa rhi thi usme pure 100 barati the kuch bramhan the kuch jaat the or baki baniye the jb barati janwase pahuchi to ldki walon ne puri 100 thaliyan lgai bhojan ke liye baithne se phle bramhan ad gye hm to 1-1 aadmi 2-2 thaliyon me khayenge tb jaat v ad gye hm to 1-1 admi 4-4 thaliyan me khayenge baat bigrte dekh shrm ke mare baniyon ne kha ki koi baat nhi hm 4-4 aadmi 1-1 thaliyan me kha lenge isi tarah baat bn gyi n koi barati bacha na koi thali bachi btaiye ki barat me kitne bramhan kitne jaat or kitne baniye the??? |
|
Answer» हरदा. योग गुरु बाबा रामदेव द्वारा एक कार्यक्रम के दौरान ब्राह्मण समाज को लेकर दिए गए बयान का गुरुवार को शहर के अखिल भारतीय ब्राह्मण महासभा द्वारा विरोध जताया गया। उन्होंने शहर के परशुराम चौक पर बाबा का पुतला दहन कर प्रदर्शन किया। अभा ब्राह्मण महासभा के अध्यक्ष उत्तम तेनगुरिया, दिनेश शर्मा ने बताया कि गत दिवस बाबा रामदेव ने सामाजिक समरसता को लेकर जो बयान दिया कि जब इस देश के ब्राह्मण भी शूद्रों के पैर छूने लगेंगे तो ही हमारा देश विकास करेगा। बाबा के इस बयान पर पूरे देश में ब्राह्मण समाज द्वारा विरोध किया जा रहा है। पदाधिकारियों ने उनके बयान की जमकर आलोचना की और इसे ब्राह्मणों का अपमान बताया। संभागीय अध्यक्ष अरुण तिवारी ने सामाजिक बंधुओं से बाबा के पतंजलि उत्पादों का बहिष्कार करने के लिए कहा। समाज के सदस्यों ने उपस्थित होकर बाबा रामदेव का पुतला दहन किया। इस दौरान निखिलेश शर्मा, राजू तिवारी, गोविंद व्यास, सौरभजी, अभिषेक दुबे आदि मौजूद थे। |
|
| 26. |
B) What happens to the force between two objects, if (i) the mass of one object is double? (ii) the distance between the objects is double and tripled? |
|
Answer» d Answer(i) If the mass of one object is doubled then the force between the two objects is doubled. Because force is DIRECTLY proportional to the product of their masses and inversely proportional to the square of the distance between their centres.(ii) If the distance between the objects is doubled then the force between the objects becomes 1/4 th as the force between the objects is inversely proportional to the square of distance between them. And if the distance between the objects is tripled then the force between the object becomes 1/9th._______________________________ KNOW MoreNewton's law of gravitation : states that any particle in the universe attracts the other particle with a force varying directly to the product of the masses and inversely to the square of distances between them.Newton's first law of motion : A BODY will continue in its states of REST or uniform motion unless an external force acts on it. Newton's second law of motion : The rate of change of momentum is directly proportional to the impressed force and acts in the same direction in which the force acts. Newton's third law of motion : For every action there is an equal and opposite reaction. |
|
| 28. |
It is learning of Academic facts and concepts through a for al curriculum |
| Answer» PLEASE FOLLO KAR do NA FRIEND | |
| 29. |
Draw position time graph for a body moving with decreasing belocity |
|
Answer» dkdifuvjeicowcowivkwpvowivieuv |
|
| 30. |
When does an object show weightlessness? |
| Answer» WEIGHTLESSNESS is a state when an object does not weigh anything. It OCCURS only when a body is in a state of FREE fall under the effect of GRAVITY alone.Explanation:Thanks ❤❤ | |
| 31. |
A body weighs 4.5 kg wt. on the surface of Earth. How much will it weigh on the surface of the planet whose mass is (1/9) mass of the Earth and radius half that of the Earth? |
|
Answer» on the other PLANET EXPLANATION:the WIEGHT will be 0.5 KGS |
|
| 32. |
What is meant by phase of a wave |
|
Answer» The PHASE involves the RELATIONSHIP between the position of the AMPLITUDE crests and TROUGHS of two waveforms. Phase can be measured in distance, time, or DEGREES. If the peaks of two signals with the same frequency are in exact alignment at the same time, they are said to be in phase.Explanation:Mark me as Brainliest pls |
|
| 33. |
Name a fibre that can be used as a cheap substitute of silk |
|
Answer» RayonRayon is the SYNTHETIC FIBRE CONSIDERED a SUBSTITUTE of SILK |
|
| 34. |
A pair of bullocks exerts a force of 140N on a plough. The field being ploughed is 15m long .How much work is done in ploughing the length of the field? |
|
Answer» tion:I hope this ANSWER HELPS you I F it helps you then LIKE me i |
|
| 35. |
the moment of inertia of a body is 16 kg m^2 and its kinetic energy of rotation is 32 j. find it angular velocity |
| Answer» MARK me BRAINLIEST PLEASE Explanation:Following me GUY's ❤ ❤ ❤ ❤ ❤ Mark me Brainliest please | |
| 36. |
Write an expression for the work done when a force is acting on an object in the direction of its displacement. |
|
Answer» said to be done when force APPLIED on an object shows the displacement in that object. W = F X s.hope it helps youplease follow and MARK as brainliest ✌☺️ |
|
| 37. |
Derive an equation to find tge acceleration produced due to earth on an objects of mass 'M' . Also find its value.? |
|
Answer» ʙᴜᴛ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ ɪs ɪɴᴅᴇᴘᴇɴᴅᴇɴᴛ ᴏғ ᴛʜᴇ ᴍᴀss. ᴀs ɢʀᴀᴠɪᴛᴀᴛɪᴏɴᴀʟ ᴄᴏɴsᴛᴀɴᴛ ɢ ᴀɴᴅ ᴍᴀss ᴏғ ᴇᴀʀᴛʜ ᴍ ᴀʀᴇ ᴀʟᴡᴀʏs ᴄᴏɴsᴛᴀɴᴛ, sᴏ ᴛʜᴇ ᴠᴀʟᴜᴇ ᴏғ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ ɢ ɪs ᴄᴏɴsᴛᴀɴᴛ ᴀs ʟᴏɴɢ ᴀs ᴛʜᴇ ʀᴀᴅɪᴜs ᴏғ ᴇᴀʀᴛʜ ʀᴇᴍᴀɪɴs ᴄᴏɴsᴛᴀɴᴛ. ... (ɢ∝ʀ) . ᴀᴛ ᴛʜᴇ ᴘᴏʟᴇs, ʀᴀᴅɪᴜs ᴏғ ᴇᴀʀᴛʜ ɪs ᴍɪɴɪᴍᴜᴍ, ʜᴇɴᴄᴇ ᴛʜᴇ ɢ ɪs ᴍᴀxɪᴍᴜᴍ. |
|
| 38. |
Please send the answer quickly |
|
Answer» a) CONSERVATION of ENERGY |
|
| 39. |
3. Which of the following metals are used to make pipes of low cost solar water heating system (1 Point)a) Goldb) Copperc) Polymerd) Silver |
|
Answer» metals are used to make PIPES of low COST SOLAR WATER heating SYSTEM is Polymer |
|
| 40. |
The new substances formed as a result of the reaction are called please tell me right answer then I will mark you as brainlest |
|
Answer» productExplanation:the NEW SUBSTANCES FORMED as a result of TGE reaction are CALLED product |
|
| 41. |
An arrow is shot from a bow. From where does the energy come to the arrow? |
|
Answer» To shoot an ARROW, the string has to be released. The kinetic ENERGY is CONVERTED by the POTENTIAL energy of the bow. Therefore, potential energy is converted into the kinetic energy. |
|
| 42. |
1) On a graph paper plot the points A ( 0 , 2 ) , B ( 2 , 4 ), C ( 4 , 6 ) and draw the line that passes through them . Write the co - ordinates of the point at which it intersects the X axis . |
| Answer» | |
| 43. |
Focal length of eye-lens of a healthy man is about |
|
Answer» The FOCAL length of normal human eye is 1.7 cm and thus the power of normal human eye is APPROXIMATELY equal to 60 DIOPTRES. |
|
| 44. |
What do you mean by diffraction of light? |
| Answer» TION:DIFFRACTION of light occurs when a light wave passes by a CORNER or through an opening or slit that is physically the approximate size of, or even SMALLER than that light's WAVELENGTH. | |
| 45. |
Write the dimensinol formula for power |
|
Answer» ✮requried answer:Or, P = [M1 L2 T-2] × [T-1] = M1 L2 T-3. Therefore, POWER is dimensionally REPRESENTED as M1 L2 T-3. |
|
| 46. |
A particle moving due east travels a distance of 5 m in the first second, 10 min the next two seconds and 200 m in the next forty seconds. The particle is moving witha) uniform velocityc) uniform speedb) non-uniform velocity |
| Answer» NON--UNIFORM VELOCITY | |
| 47. |
Can kinetic energy of a body be negative? |
|
Answer» mass can't be negative and the square of SPEED gives a non-negative number, KINETIC ENERGY can't be negative. EITHER something is moving and has positive kinetic energy, or it is not moving and has zero kinetic energy. |
|
| 48. |
Log4+log3.142+3log1.26-log3....plz give the answer with full explaintion |
|
Answer» is Energy?______________________❥︎ In physics, energy is the quantitative property that MUST be transferred to an object in order to PERFORM WORK on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or DESTROYED. ____________________________________________ |
|
| 49. |
Log4+log3.142+3log1.26-log3 |
| Answer» PLEASE FOLLOW the above ATTACHMENT for the SOLUTION | |