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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. |
Distinguish between Mirror and lens |
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Answer» The MIRROR is glass with one SIDE silvery backing produces an image by reflection on only one surface. The LENS is a transparent substance that produces IMAGES by refraction in any surface of the TWO surfaces. It can be plane or curved. |
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| 2. |
an electric dipole having dipole moment p=(3î+4j )×10^-9 cm is placed in a uniform electric field E=(-60î-80j |
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Answer» An electric dipole with dipole MOMENT p =(3i+4j)×10 −30 C−m is placed in an electric FIELD E =4000 i^ (N/C). An external agent turns the dipole and its dipole moment becomes (−4 i^ +3 J^ )×10 −30 C−m. |
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| 3. |
What osscilates in electromagnetic waves |
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Answer» magnetic waves have two components: an OSCILLATING electric FIELD and a PERPENDICULAR, the comoving magnetic field which oscillates at the same FREQUENCY, but with a phase-shifted by 90°. They describe the movement of a PACKET of energy between two points. |
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| 4. |
Drow the diagrams arrangement issolids; liquids., and gases |
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Answer» this can be help youExplanation:solids have very close BOND. solid have a FIXED shape.liquid is a lose bond. it's MOLECULE are FREE. Gas are free in AIR. it has no bond. |
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| 5. |
Mention factors affecting resistance of a conductor |
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| 6. |
Explain about diverging and converging lens with diagram |
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Answer» NCE BETWEEN CONCAVE AND A CONVEX LENS Concave Lens Concave lens is thinner at the middle and thicker at the edges.It is a diverging lens. It is used as spy holes in doors, in optical INSTRUMENTS(telescope). Convex LensConvex lens is thicker in the middle and thinner at the edges.It is a converging lens.It is used in COMPOUND microscope as EYE piece, projectors and magnifying glass ETC. |
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| 7. |
Relation between current and viltage |
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Answer» ationship between current, voltage and resistance is expressed by Ohm's LAW. This states that the current flowing in a circuit is DIRECTLY PROPORTIONAL to the applied voltage and INVERSELY proportional to the resistance of the circuit, provided the temperature remains constant. |
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| 8. |
Different characteristics of existing community |
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Answer» Community execution*Community#of Purpose- directed at organizational objectives and culture.*Community# of Practice- supporting GROUP EFFICIENCY and competence.*Community# of Interest- addressing simple INDIVIDUAL effectiveness and KNOWLEDGE. |
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| 9. |
Calculate the weight of 60% of sulphuric acid to decompose 50g of calcium carbonate |
| Answer» MM of CaCO3 is 40 + 12 + 48 = 100Equation CaCO3 + H2SO4 = CaSO4 + CO2 + H2OSo 1 mole of calcium carbonate reacts with 1 mole of sulphuric acid.In the QUESTION 50 g of CaCO3 used which is 0.5 moles. H2SO4 is 2 + 32 + 64 = 98 0.5 moles is 49 g of H2SO4This is a 60% solution so the answer is 100 x 49 / 60 = 81.67 | |
| 10. |
Difference between absolute temperature and absolute zero temperature |
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Answer» Absolute TEMPERATURE scales are Kelvin (degree units Celsius) and Rankine (degree units Fahrenheit). Absolute ZERO is the temperature at which a system is in the STATE of lowest possible (minimum) energy. As MOLECULES approach this temperature their movements DROP towards zero. |
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| 11. |
Gsaes have no free surface. Why? |
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Answer» o not have a free surface DUE to very less force of attraction between the MOLECULES and the dispersed NATURE of gas molecules does not ALLOW the gases to have a free surface. |
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| 12. |
Draw the ray digramof image formation byConcave mirror when the object is beyondThe centreof curvature |
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Answer» ฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅฅ'ω'ฅ |
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| 13. |
A car initially at rest, picks up a velocity of 72 kmph in 1/4 minutes The distance covered by caris..... |
| Answer» TION:EXPLANATION in the PHOTO | |
| 14. |
State'sohm's lawin electricity |
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Answer» Alternate statements of Ohm's law are that the current I in a conductor equals the POTENTIAL difference V across the conductor divided by the resistance of the conductor, or SIMPLY I = V/R, and that the potential difference across a conductor equals the product of the current in the conductor and its resistance, |
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| 15. |
The magnificaton of a product by a mirror is +1? what does it mean |
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Answer» The magnification produced by a plane mirror is +1 means then the SIZE of the IMAGE is equal to the size of the object. If m has a magnitude GREATER than 1 the image is larger than the object, and an m with a magnitude LESS than 1 means the image is SMALLER than the object. |
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| 16. |
Why lithium ion has higher mobility than magnesium ion???????? |
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Answer» magnesium ION has two valency electrons in the OUTER energy SHELL,compared to just one with the lithium ion.....this should allow for a higher energy DENSITY than lithium ion batteries |
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| 17. |
. A current carrying straight wire held perpendicular to the plane of paper and current passes through this conductor in the vertically upward direction. The direction of magnetic field is into the plane of the paper. How will the conductor move? To your left or right? State the rule used |
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Answer» the RIGHT HAND THUMB rule is used for it .EXPLANATION: |
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| 18. |
Assertion(A): Give a sharp hit at the bottom of the stack with striker. We find that the bottom coln will be removed from the stack and other will slide down.Reason(R). The body at rest always tries to stay at the same state of rest. The propertyis known as static inertia.A) Ais correct, R is wrong.B) A is wrong, R is correct.C) Both A and R are correct.D) Both A and R are correct and R is the correct explanation of A. |
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Answer» A is coming CORRECT and R is WRONG Explanation:I'm SURE about my ANSWER |
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| 19. |
Health is a ______ concept emphasizing social and personal resources,as well as physical capacities |
| Answer» INTERESTING CONCEPT emphasizeing SOCIAL.......... | |
| 20. |
Under what condition the three vectors cannot give aro resultant? |
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Answer» If theyre not lying in the same plane..we cannot USE triangle LAW of VECTOR addition |
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| 21. |
Explain work energy theorem in case of pendulum |
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Answer» We can APPLY the work energy theorem. The only FORCE that does work on the pendulum is gravity and we KNOW from the conservation of MECHANICAL energy that the change in gravitational POTENTIAL energy will correspond to the opposite change in kinetic energy |
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| 22. |
Draw energy level diagram for both singlet and triplet state of electronic configuration of 5d5f |
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| 23. |
The position of an object moving along x axis is given by x=a+bt^3. where a=5.8 m, b=5.2 m/s^3 initially what is the position of an object |
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Answer» beogensgrvdigebdivr bros board wlvru canExplanation:how sure do enalgsenjs ebsodteb LEVE DE LABS enlarge ehoweb |
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| 24. |
13) write the expression for the error of quotient of two quantities. |
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Answer» Error of a product or a quotientWhen TWO quantities are multiplied or divided, the relative error in the RESULT is the sum of the relative ERRORS in the multipliers. Z ± ΔZ = (A ± ΔA) (B ± ΔB) = AB ± B ΔA ± A ΔB ± ΔA ΔB. Dividing LHS by Z and RHS by AB we have, 1 ± (ΔZ/Z) = 1 ± (ΔA/A) ± (ΔB/B) ± (ΔA/A)(ΔB/B). |
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| 26. |
* An electric dipole consists of two charges of o. lucSepereated by distance of 2cm.The dipole is placed inan external field of 10^5 N/c. What maximum torquedoes the field exert the dipole ? |
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| 27. |
20 )Which one statement given below is correct?A.Rolling friction > Staticfriction > Sliding frictionB. ------- Rolling friction < Staticfriction < Sliding frictionC ------Rolling friction < Staticfriction > Sliding frictionD.------Rolling friction < Slidingfriction< Static friction |
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Answer» fifhg dydusufidif SOAP paExplanation:xnfppfkfjfjflgkfjdyfif |
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| 28. |
Write the balanced chemical reactions for above changes using appropriate symbols and formulae? |
| Answer» CLICK the picture clearly the chemical REACTIONS are not INVISIBLE | |
| 29. |
Guys pls tell that what is kaleidoscope?? |
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Answer» A kaleidoscope (/kəˈlaɪdəskoʊp/) is an optical instrument with two or more reflecting SURFACES tilted to each other in an angle, so that one or more (parts of) objects on one end of the mirrors are SEEN as a REGULAR SYMMETRICAL pattern when viewed from the other end, due to repeated reflection. |
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| 30. |
the position of an object moving along x axis is given by x=a+bt^3. initially what is the position of an object |
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Answer» ihegv DOGE dodye dodye F pdhe d dlhr dpuev rfoh royvr dkvExplanation: keh e dkge sky r lage SKU e dkh sky SLT tkcy qlv h wly. wlvs co V qlch. |
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| 31. |
Q8-As the velocity of light increases, the refractive index of the medium decreases. Light enters from air to water having refractive index 4/3. Find thespeed of light in water. The speed of light in vacuum is 3 x108 (3)Define absolute refractive index. Absolute refractive indices of medium A andmedium B are n, and n, respectively, what is the refractive index of mediumB with respect to medium A? How does the velocity of light vary with changein the optical density of the media? |
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Answer» I GOT it the answerExplanation:PLEASE MARK me as a brain LIST |
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| 32. |
Show that the path followed by the projectile is parabolic at an angle x with he horizontal. |
| Answer» PLEASE markas BRAINLIEST ANSWER and FOLLOWME PLZZZZZ | |
| 33. |
Net charge on object having 9 x 1013 protons and 6 x 1013 electrons is (A) – 4.8 uc(B) 4.8 MC(C) 4.8 C(D) 3 x 1.6 x 10-19 C |
| Answer» CHARGE on 1 proton =1.6*10^-19charge on 9*10^13= 1.6*10^-19 * 9*10^13 = 14.4 * 10^-6SimilarlyCharge on 1 ELECTRON = -1.6*10^-19charge on 6*10^13= - 1.6*10^-19 * 6*10^13= -9.6*10^-6Net charge= Charge of electron + Charge of proton = -9.6*10^-6 + 14.4*10^-6 = 4.8 columb Correct option is C | |
| 34. |
An ant moving along the rim of a wheel of radius 20cm takes 6 minutesto complete one round find its speedand velocity after a complete round |
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| 35. |
Why objects moving in fluids must have special shapes? |
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Answer» my ANSWER is EXPLANATION:SQUARE RECTANGLE RHOMBUS |
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| 36. |
(b) A block of dimensions 20cm, 10cm and 5cm of weight 6 N is made to lie on the table with sides 20cm and 10cm. Find out the pressure exerted |
| Answer» HOPE it helps YOUIF you like my ANSWER plz thank me follow me and MARK me as brainlist THANKYOU.... | |
| 37. |
Q15.4 distinct balls are to be arranged in twocompartments of equaldimensions number ofMacrostates is equal to: |
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Answer» Explanation: the number of accessible MICROSTATES, and the probability that a ... Consider a one-dimensional ideal gas CONSISTING of N = 5 particles each of which has the same speed v, but can move in one of two directions with EQUAL probability. ... DIFFERENT balls that can occupy box 2, N − 2 balls that can occupy box 3, and so on, ...please mark me the brainliest |
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| 38. |
अ ब्वॉय गोस from हिस हाउस स्कूल विद द स्पीड ऑफ 40 मीटर पर सेकंड एंड रिटर्न्स विद द स्पीड ऑफ 60 मीटर पर सेकंड फॉलोइंग द सेम 5 10 फाइंड एवरेज स्पीड इन थ्रू आउट द जर्नी |
| Answer» L can't UNDERSTAND this questionbecause it is WRITTEN in HINDI. | |
| 40. |
What is mean by stabic friction |
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Answer» Static FRICTION is a force that keeps an object at REST. Static friction DEFINITION can be written as: The friction experienced when individuals try to move a stationary object on a surface, without actually triggering any relative MOTION between the body and the surface which it is on.Explanation:NOTHING Here |
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| 41. |
7. The position of a particle moving along the x-axis is given by = 2t-3t^2+t^3 where 'x' is in meter and t is in second. Find the velocity of the particle at t=2s. |
| Answer» HOPE this ANSWER HELPS you BUDDY!! | |
| 42. |
Why glass doesn't reflect the light while mirror reflect light ? |
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Answer» because GLASS is a TRANSPARENT object.so that can PASS the LIGHT TROUGH it |
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| 43. |
Speedof light in vaccum /speedof light in medium |
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Answer» Light travels at approximately 300,000 kilometers PER second in a VACUUM, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in WATER (refractive index of 1.3; SEE Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5). |
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| 44. |
The speed of car weinghing 1500kg increasess from 36km/h 75km/h uniformaly what will be change un momentum of the car |
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Answer» The CHANGE in momentum of a car WEIGHING 1500 kg when its speed increases from 36 km/h to 72 km/h = 30000 kg. m/s − 15000 kg.Explanation:please mark me as brainliest |
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| 45. |
The displacement of a particle executing S.H.M. is given by y = 5 sin (20 t + 0.5 π) which is incorrect:- |
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Answer» jeowheisue I am wteuejeusieheuehjdjsidosjsoeje9sjwojwiwksosjwosj3oeieisieiis eiowydowjspej8dkwos6eukeoeowksoosowowoeoeieiwioeowowoiwieieiieieoeoiwisowooeosooowiwisoeoiet7ejdoshdijwosie8dieosy7eklduurjsodyuwiaauzueoue734uyeih3he6y4o2greiygktwe yeiwgeey8eheueuwieihsiowheiehheieehidejwiehidjwoshwisbwishshw suos |
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| 46. |
18. निम्नलिखित की परिभाषा दीजिए- (a) अपवर्तन, (b) अपवर्तनांक, (c) प्रिज्म-कोण, (d) विचलन कोण तथा न्यूनतम विचलन कोण, (e) वर्णविक्षेपण, () कोणीय विक्षेपण, (g) वर्ण विक्षेपण क्षमता। |
| Answer» FIRST MARK me BRILLIANT | |
| 47. |
For question number 10 - 12 two statements are given - one labelled as Assertion (A) and the other labelled as Reason (R). Select the correctanswer to these questions from the options (a), (b), (c) and (d) as given.(a) Both A and R are true and R is correct explanation of the A.(b) Both A and R are true but R is not correct explanation of the A.(c) A is true but R is false.(d) A is false but R is true.10.(A) : Bones can easily move without any friction at joints.(R) : Bone matrix consists of calcium and magnesium salts.11.(A): Smooth muscles are also called unstriated muscles.(R): These muscles do not have dark and light bands on their surface.12.(A): A deshelled egg when placed in water swells up.(R): Endosmosis takes place on placing a cell in hypertonic solution. |
| Answer» ACCERATION.....................................d | |
| 49. |
What is the scope of physics in measuring length & mass |
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Answer» tion:The scope of physics can be understood if ONE looks at its VARIOUS sub-disciplines such as mechanics, optics, heat and thermodynamics, electrodynamics, ATOMIC physics, nuclear physics, etc. Mechanics deals with motion of particles and general SYSTEMS of particles. |
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| 50. |
Physics. his main subject (is,are) |
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Answer» is (the ANSWER) PLEASE MARK me as BRAINLIEST |
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