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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. |
34. A force of 10 N acts for 20 second on a body of mass 2 kg initially at rest. Calculate the energy requiredby the body and the work done by the applied force. |
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Answer» force=10N time=20 sec mass=2kg u=0m/s w=fs ke=1/2mv² |
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| 2. |
A convex mirror produce 3 times magnified image of an object placed at 20 cm in front of it. Calculate the image distance and focal length |
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Answer» Answer: THEREFORE magnification of the OBJECT is 5 it is GIVEN that an object is placed 20cm in front of a concave mirror whose FOCAL length is 25CM. |
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| 3. |
A body starting from rest, accelerates at aconstant rate a m/s? for some time, after which itdecelerates at a constant rate b m/s? to come torest finally. If the total time elapsed is t s themaximum velocity attained by the body is givenbyabab(A) -t m/s(B)t m/sa + ba-b2ab2ab(C) -t m/s(D) -t m/sa + ba-b |
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Answer» yhhsy qsuiqsqbzhxtzgsuwuwiekxhhzj |
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| 4. |
A person needs a lens of power -5.5 Dioptre for correction his distant vision. For correcting his near visions he need a lens of power +1.5 Dioptre. What is the focal length of the lens required for correcting 1, distant vision and 2, Near visionHow to solve the answer . pls help me |
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Answer» SORRY but who are you |
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| 5. |
PAGEE. LAV where Go isA Quantity X is givengiven bythe permittivity of free space,the lengthsV is a potential difference, t is time intervalfind the dimension of x. |
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| 6. |
Define vector product and state it's characteristics |
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Answer» Answer: VECTOR PRODUCT two vectors is always a vector. The Vector product of two vectors is noncommutative. ... vector product obeys the distributive LAW of multiplication. i.e. a ×( b + c) = a × b + a × c. If a · b = 0 and a ≠ o, b ≠ o then the two vectors are PARALLEL to each other. |
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| 7. |
Realation between bar and Pascal |
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Answer» The bar is defined using the SI derived UNIT, PASCAL: 1 bar ≡ 100,000 Pa ≡ 100,000 N/m2. Thus, 1 bar is equal to: 1,000,000 BA (barye) (in cgs units); CGS units: 1.0×106 Ba Unit of: Pressure SI units: 100 kPa |
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| 8. |
Define relation between the focal length and radius of curve line |
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Answer» The relation between focal length (f) and RADIUS of curvature (R) of a spherical mirror is that the focal length is equal to half of the radius of curvature i.e. f=R2. ... SINCE this mirror is PART of a CIRCLE, the normal drawn to the surface of the circle passes through the CENTRE (C) of the mirror. |
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| 9. |
If a particle of mass m is projected at anangle a with the horizontal, then:a).the angular momentum of theparticle about point of projectionremains constant.b).the linear momentum of particleremains constantc).total mechanical energy remainsconstant in the absence of airresistanced).all the above |
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Answer» how are FRIENDS & what are you doing now |
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| 10. |
Do you know about carrot how many good things are there in this |
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| 11. |
Please be fast quickly |
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| 12. |
Write the diagram indicating the field lines of a magnetic field around a straight conducting wire |
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| 13. |
The string of pendulum of length I isdisplaced through 90° from the verticaland released. Then the minimum strengthof the string in order to withstand thetension, as the pendulum passes throughthe mean position ismg3 mg5 mg6 mg |
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| 14. |
differentiate the total current of a series and parallel circuit through the application of kirchhoff's current law. |
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Answer» Answer: Components are said to be connected TOGETHER in Series if the same current value FLOWS through all the components. Components are said to be connected together in PARALLEL if they have the same VOLTAGE APPLIED across them. |
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| 15. |
Problem 1Calculate the force required to stretch a 2 cm diameter steel rod by 0.01 percentage.Young's modulus of steel is 2x10 N/m2 |
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Answer» ksksjsskskskskskksksksksk |
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| 16. |
The far point of a myopic person is 80 cm In front of the eye . What is the nature and power of the lens required to correct the problem?Explain the answer. |
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Answer» Answer: The far point of a myopic person is 80 CM in front of the eye. What is the nature and power of the lens REQUIRED to CORRECT the problem? The corrected lens should be such that it forms the image at the retina instead of, infront of the retina. Since, power of the lens is NEGATIVE, remedial lens is a CONCAVE lens. Explanation: mark me as brainlist pls and like pls |
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| 17. |
Electric field is a scalar function of position ofa.qEb.Vc.Ed.e |
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Answer» HEY Mate Explanation: c.E is the answer |
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| 18. |
WHAT IS THE PITCH OF THE SCREW GUAGE |
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Answer» Answer: Pitch: Pitch of the screw gauge is defined as the DISTANCE moved by the SPINDLE PER revolution which is measured by moving the head scale over the pitch scale in ORDER to complete one full rotation. |
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| 19. |
Find the area of the triangle formed by a=2i+j+3k,b=2i+j+k as adjacent sides |
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Answer» ? lhhahahmum.me lelee laude |
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| 20. |
Decibel is a ______1)a musical instrument2)a musical note3)a measure of sound level4)the wave length of noise |
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Answer» Answer: The decibel is a relative unit of measurement corresponding to one TENTH of a bel. It is USED to express the ratio of one value of a power or root-power quantity to another, on a logarithmic scale. A logarithmic quantity in DECIBELS is called a level please mark me as a brainlest answer please |
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| 21. |
WHAT IS THE LEAST COUNT OF THE SCREW GUAGE ? |
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Answer» Answer: It means that for one COMPLETE rotation of the thimble scale, 0.5 MM distance is traveled by the SPINDLE. There are 50 divisions on circular scale. The least count will be 0.01 mm CALCULATED as below. |
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| 22. |
What is the function of a long pivot in an experiment to compare expansion of various metals |
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Answer» Answer: A thermometer is designed according to the purpose for which it is REQUIRED. ... Expansion in solids can be demonstrated by the ball and ring EXPERIMENT. ... Different solids LIKE metals will expand at different rates when EXPOSED to the same ... Any slight expansion of the bar is MAGNIFIED by the long pointer and can be read |
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| 23. |
Why the bells are made by metal instead of wood? |
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Answer» Wood DAMPENS VIBRATIONS while METALS are elastic. ... Answer VERIFIED. Hint: You can start by explaining how metals are sonorous (material that makes a ringing sound on being struck) and woods are not sonorous. |
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| 24. |
How force is related with distance in coulombs law?a)1/r cubeb)1/r power 4c)1/r power 5d)1/r power 6 |
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Answer» HEMOGLOBIN is TH ANSWER |
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| 25. |
WHAT IS THE PRINCIPLE PF SCREW GUAGE? |
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Answer» A screw GAUGE WORKS on the principle of screw. This screw principle helps to convert SMALLER distances into larger ones by measuring the rotation of the screw. It amplifies the smaller dimensions and this converts into larger ones. When we rotate the screw, there's a LINEAR movement of the main SCALE. |
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| 26. |
A body starts from point A moves along a circular path of radius and after time teaches diametrically opposite at point B. Determine its distance and displacement |
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Answer» DISTANCE =22/7×r |
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| 27. |
Find the current drawn from the battery by the network of our resistors shown in the figure |
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| 28. |
What is the function of the glass stem in a thermometer |
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Answer» Answer: the bulb of the thermometer is the thin glass RESERVOIR that HOLDS the liquid. The bulb is carefully designed to contain a calculated VOLUME of liquid, based upon the length and diameter of the capillary (or stem), as WELL as the thermal EXPANSION coefficient of the liquid. |
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| 29. |
Butterflies shows this motion |
Answer» Butterfly uses Random motion ALONG the FLOWER. Random motion, the flight DIRECTION and speed is continuously changes.... |
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| 30. |
Outer diameter formule = ? |
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Answer» Measure or CALCULATE the outside CIRCUMFERENCE of the pipe. Then divide that amount by pi, usually rounded to 3.1415. The result is the outside diameter of the pipe. |
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| 31. |
Salt, sand, honey, spongechoose the odd one out |
Answer» HONEY is the ODD ONE here.Explanation: ♥️Hope this HELPS uh♥️ |
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| 32. |
The common name of hydrogen monoxide is ? |
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Answer» Answer: For those who have become dependent, DHMO withdrawal means certain death. DIHYDROGEN monoxide: is ALSO known as HYDROXYL acid, and is the major component of acid rain. CONTRIBUTES to the "greenhouse effect." |
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| 33. |
a galvanometer has a resistance of 25 om and it's full scale deflection current is 25uA. what resistance should be added it to have a range of 0-10V? |
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Answer» THUS, a RESISTANCE of 9975 OHM is REQUIRED. |
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| 34. |
There must be apparatus in chronography laboratory activity ? |
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Answer» Chromatography equipment includes all the components needed for SEPARATION: columns, frits, FLOW cells, PUMPS, detector, COLLECTORS and software to complete systems used for High Performance Liquid Chromatography (HPLC), GAS chromatography (GC) and Liquid Chromatography and Mass Spectrophotometers (LC-MS) |
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| 37. |
Find the cross product of ⃗⃗⃗ and ⃗⃗⃗ where ⃗⃗⃗ = 2 i+ 3 j + 4 and ⃗⃗⃗ = 3 + 2 – 2 |
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Answer» MARK me as BRAINLIEST PLEASE |
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| 38. |
Three liquids A, B and C are taken in a vessel is depicted.i) Among these which liquid has the highest density?ii) Which liquid has the lowest density? |
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| 39. |
I cannot see the perfect coincient line on micrometeScrew gauge. Because I have following type of exces2) intinstrumental error b) obsolute erronError of estimationd) personal error |
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Answer» there will be any POSSIBILITY AMONG them |
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| 40. |
How many complete waves will there be in 1 minute?(1 Point) |
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Answer» Answer: |
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| 41. |
Define the main difference b/w renewable energy resources and non-renewable energy resources? |
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Answer» Answer: Nonrenewable energy resources, like COAL, nuclear, oil, and natural GAS, are available in limited SUPPLIES. This is usually due to the LONG time it takes for them to be replenished. Renewable resources are replenished NATURALLY and over relatively short periods of time. |
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| 42. |
Plz plz plz plz answer fast it's urgent plz don't spam plz |
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Answer» Explanation: 15. 2. - 1400 N Initial velocity U = 60 km/hr = 16.66 m/s FINAL velocity v = 0 Accerelation a = ? Displacement S = 50 m By third equation pf motion v² = u² + 2 aS (0)² = (16.66)² + 2 × a× 50 0 = 277.55 × 100 a a = - 277.55 / 100 a = - 2.7755 m/s² Force = mass × accerelation F = 504 × - (2.7755) F = - 1398.852 N = - 1400 N 16. 3. same accerelation Because both fall under the ACTION of gravitational force |
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| 43. |
Example for solid solution is ? |
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Answer» Answer: A solid SOLUTION describes a family of materials which have a range of COMPOSITIONS (e.g) AxB1-x and a single crystal STRUCTURE. MANY examples can be found in metallurgy, geology and solid-state chemistry. ... Solid in which components are compatible and FORM a unique phase. |
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| 44. |
(b)andDiscuss the effect of temperaturepressure on viscosity. |
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Answer» Answer: The increase in temperature causes the kinetic or thermal ENERGY to increase and the molecules become more MOBILE. The attractive binding energy is REDUCED and therefore the viscosity is reduc ed |
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| 45. |
will the pressure exerted by water on a diver at a certain depth in a sea ,be the same ,more,or less than the pressure exerted on him in a river at the same depth ? justify your answrr |
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Answer» the pressure is equal so that they GET cancel out. if this won't happen then the BODY of diver would have got crushed by the pressure. |
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| 46. |
Q. 5 ) Answer the following questions in brief1) Write in brief about barometre |
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Answer» Answer: A barometer is a SCIENTIFIC instrument that is used to measure air pressure in a certain environment. Pressure tendency can FORECAST short term changes in the weather. Many MEASUREMENTS of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and FRONTAL boundaries. |
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| 47. |
पर्यावरण का अध्ययन जीव-विज्ञान की किस शाखा के अन्तर्गत किया जाता है ?(A) वर्गिक(B) आनुवंशिकी(C) कार्यिकी(D) पारिस्थितिकthanks my answer I will return |
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| 48. |
Water and mercury are filled in two test tube which liquid undergoes capillary depression |
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Answer» Explanation: LIQUIDS that rise in small-bore tubes inserted into the liquid are said to wet the TUBE, whereas liquids that are depressed within thin tubes below the SURFACE of the surrounding liquid do not wet the tube. WATER is a liquid that wets glass capillary tubes; mercury is one that does not. |
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| 49. |
(a) Show that the centre of oscillation and centreof suspension are interchangeable. |
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Answer» Answer: The time PERIOD about point of oscillation is same as the AXIS of SUSPENSION through S. Thus the centre of oscillation and oscillation are interchangeable. FIGURE shows a section of a rigid body of mass 'm' by a vertical plane passing though its centre of gravity 'G' and point of suspension 'S'. |
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| 50. |
Calculate the current drawn by primary coil of a transformer connected to 220 volt AC. it gives output of 20 volt. if this is used to operate a device of resistance 20 ohm. |
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Answer» Here VP=200V,VS=20,RS=20Ω, EFFICIENCY (η)=80% IS=VSRS=2010=1A Efficiency η=VSISVPIP or 80100=200×1200×Ip [∵=Power outputPower INPUT] or IP=0.125A |
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