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. |
If a=3i-4j+5k and b=-2i+j-3k find the scalar product of 1.a.b and 2.b.a |
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Answer» grhtyryjrheyrbbthue Explanation: vrvrgeyehhryrevb |
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| 2. |
Shanky exerts a pressure of 12 Pa by applyinga force of 540N on a box. Calculate the areaover which the force is applied. |
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Answer» Therefore, Area = Thrust pressure = 540/12 = 45. |
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| 3. |
A small monkey of mass m = 20 kg is climbing up a rope with an acceleration2 m/s2 relative to rope. The rope passes over a fixed pulley and carries a wooden bar of massM= 5 kg .Find the acceleration of monkey and the bar.Please explain Properly. |
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Answer» T-15g=15×1 T=15(g+1) =15(9.8+1) =15×10.8 =162 N S= =>5=T=I HOPE it's helpful ^-^ |
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| 4. |
Whatwouldbetheangleofprojectionofjumpingtocovermaximumdistance?A)30ºB)40ºC)45ºD)60º |
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Answer» Answer: The optimum take-off ANGLE for a world-class LONG JUMPER may be ANYWHERE from 15° to 27°. Linthorne, N.P. Optimum angles of PROJECTION in the throws and jumps. Explanation: |
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| 5. |
कालाअनाबृत समीकरण भौतिकी |
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Answer» गति के समीकरणों का स्वरूप भिन्न-भिन्न हो सकता है। यह इस बात पर निर्भर करता है कि गति में स्थानान्तरण हो रहा है या केवल घूर्णन है या दोनो हैं, एक ही बल काम कर रहा है या कई, बल (त्वरण) नियत है या परिवर्तनशील, पिण्ड का द्रव्यमान स्थिर है या बदल रहा है (जैसे रॉकेट में) आदि। परम्परागत भौतिकी (क्लासिकल फिजिक्स) में गति का समीकरण इस प्रकार है :- {\displaystyle m\cdot {\FRAC {d^{2}{\vec {r}}(t)}{dt^{2}}}=\sum _{i}{\vec {F}}_{i}({\vec {r}},t)}{\displaystyle m\cdot {\frac {d^{2}{\vec {r}}(t)}{dt^{2}}}=\sum _{i}{\vec {F}}_{i}({\vec {r}},t)}. इसे निम्नलिखित रूप में भी लिखा जा सकता है :- {\displaystyle m\cdot {\vec {a}}=\sum _{i}{\vec {F}}_{i}}{\displaystyle m\cdot {\vec {a}}=\sum _{i}{\vec {F}}_{i}} जहाँ {\displaystyle m}{\displaystyle m}, वस्तु का द्रव्यमान है, तथा {\displaystyle {\vec {F}}_{i}({\vec {r}},t)}{\displaystyle {\vec {F}}_{i}({\vec {r}},t)} वस्तु पर लगने वाले बल हैं। |
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| 6. |
QUESTION 8: To ensure greater currentto be drawn from an electrical cell weshould have: |
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Answer» dhhdhhffhsjsj djdjdvskbdidbd dhsjdvusnshdidbebrveisvdjfit. did |
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| 7. |
Showthatdv\dt=τ,whereListheangularmomentumandτisthetorque. |
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Answer» what is this ¿?????????????? |
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| 8. |
Define Fleming right hand rule |
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Answer» Answer: use the first two points of your TEST to DETERMINE WHETHER you have any problems with the problem of your problem |
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| 9. |
हेलो हेलो ब्रेनलीfhhffhsgbckyczxv |
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Answer» हेलो हेलो ब्रेनलीfhhffhsgbckyczxv Explanation: |
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| 10. |
What is the force??? |
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Answer» Answer: In physics, a force is any INTERACTION that, when unopposed, will change the motion of an OBJECT. A force can cause an object with MASS to change its velocity, i.e., to accelerate. Force can also be DESCRIBED intuitively as a push or a PULL. A force has both magnitude and direction, making it a vector quantity. |
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| 11. |
Show that dl/dt = τ, where L is the angular momentum and τ is the torque. |
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Answer» As we know, L = r × p, differentiating on both the SIDES, ⇒ \frac{dl}{dt} dt dl
= \frac{d}{dt} dt d
( r × p) ⇒ \frac{dl}{dt} dt dl
= \frac{dr}{dt} dt dr
× p + r × \frac{dp}{dt} dt dp
⇒ \frac{dl}{dt} dt dl
= v × p + r × \frac{dp}{dt} dt dp
⇒ \frac{dl}{dt} dt dl
= v × MV + r × \frac{dp}{dt} dt dp
SINCE, v = 0 ⇒ \frac{dl}{dt} dt dl
= r × \frac{dp}{dt} dt dp
= r × F = τ ⇒ \frac{dl}{dt} dt dl
= τ |
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| 12. |
The rate of change in angular momentum of partical is equal to torque acting on it |
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Answer» THEOREM: The rate of CHANGE of the total angular momentum of a system of particles is EQUAL to the sum of the external TORQUES on the system |
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| 13. |
Properties of covalent compounds ? |
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Answer» Answer: Covalent compounds GENERALLY have low boiling and melting POINTS, and are found in all three physical STATES at room temperature. Covalent compounds do not conduct ELECTRICITY; this is because covalent compounds do not have charged PARTICLES capable of transporting electrons. |
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| 14. |
(a)State the relation between the 'force of limiting friction' and the 'normal reaction'for two bodies in contact with each other |
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Answer» I don't KNOW what is answer |
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| 15. |
Which force is acting between pulley and rop |
Answer» TENSION FORCE is the answerhope this will help you ☺️☺️ |
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| 16. |
Define Q-factor of an RLC parallel circuit |
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| 17. |
Establish a relation between the surface tension and surface energy. |
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| 18. |
What is chandrasekhar limit?(astronomy) |
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Answer» Answer: The Chandrasekhar Limit is now accepted to be approximately 1.4 times the mass of the sun; any white DWARF with less than this mass will STAY a white dwarf forever, while a star that exceeds this mass is destined to end its LIFE in that most VIOLENT of EXPLOSIONS: a supernova. |
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| 20. |
N bend in ce level could has a1oom find the medinion speedcoming a budewithoutPriction between theoved is 0.8. Consi Vinen - 28 mi) |
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Answer» sgsygstsyeywyywyw7w7w728 |
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| 21. |
Location of objects is specific by |
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Answer» To DESCRIBE the position of an object we NEED to SPECIFY a reference POINT called the origin Explanation: |
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| 22. |
Discuss Newton's formula for the velocity of longitudinal waves inair. What correction was applied by Laplace and why? |
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Answer» Answer: LAPLACE Correction for NEWTON's Formula He CORRECTED Newton's formula by assuming that, there is no heat exchange takes place as the compression and rarefaction takes place very fast. THUS, the temperature does not remain CONSTANT and the propagation of the sound wave in air is an adiabatic process. |
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| 23. |
Drive the relationship between the temperature and volume for a reversible adiabatic process |
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| 24. |
DiscussNewton’sformulaforthevelocityoflongitudinalwavesinair.WhatcorrectionwasappliedbyLaplaceandwhy? |
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| 25. |
One of the devices ofProduce plame Polarizedlight it |
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Answer» When unpolarized LIGHT is transmitted through a Polaroid filter, it emerges with one-half the intensity and with vibrations in a single PLANE; it emerges as POLARIZED light. A Polaroid filter is able to polarize light because of the chemical composition of the filter MATERIAL. |
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| 26. |
Explain the working principal of PMMC instrument |
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Answer» Answer: When a current flow through the coil, it generates a magnetic field which is proportional to the current in CASE of an ammeter. The DEFLECTING torque is PRODUCED by the ELECTROMAGNETIC action of the current in the coil and the magnetic field. These springs serve as a flexible connection to the coil CONDUCTORS |
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| 27. |
If the force applied on the body displaces it in the opposite direction of applied force, then the work done is: 1M (a) Positive (b) Negative (c) Zero (d) Data is inadequate |
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Answer» B. negative Explanation: |
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| 28. |
He has not got angry easily and maintains his calm |
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Answer» HI iwkendnbdksozskksnsnddlxokx |
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| 29. |
What is capacitor ??? and give derivation of it |
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Answer» Answer: The capacitance of a capacitor is the ABILITY of a capacitor to STORE an ELECTRIC charge per unit of voltage across its plates of a capacitor. Capacitance is found by DIVIDING electric charge with voltage by the FORMULA C=Q/V. Its unit is Farad. |
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| 30. |
Showthatdl/dt=τ,whereListheangularmomentumandτisthetorque. |
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Answer» Answer: MASS=1.67×10 27 kg, Velocty of proton is 7.0×10 6 m/s Velocity of neutron is 4.0×10 6 m/s So, BY the conservation of momentum, let m be the mass of the proton, so 2M is the mass of the deuteron. Initially, the momentum of the proton is −m×7×10 6 kgm/s Initial momentum of the neutron is +m×4×10 6 kgm/s so, TOTAL momentum is −m×10 6 kgm/s Now, after the ATTACHMENT of the mass 2m, Let v be the velocity of the deuteron, Then 2mv=−m×3×10 6
Canceling m then e get, v=−1.5×10 6 m/s |
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| 31. |
Show that Tiltz = e no |
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Answer» Answer: 100th will all dlએમ દમ ગી એમ ડઝન ઓમ |
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| 32. |
What is the name of the glass house made for the growth of saplings in temperate countries |
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Answer» Answer: Greenhouse Greenhouse, ALSO called glasshouse, building designed for the protection of TENDER or out-of-season PLANTS against excessive cold or HEAT. |
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| 33. |
B)Drawthegraphsshowingthevariationofenergy(P.E,K.Eandtotalenergy)withposition. |
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Answer» hhysysusgsgzydgdugd7s6w6w6wyhbdc8c |
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| 34. |
Show that dl/dt= τ, where L is the angular momentum and τ is the torque. |
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Answer» Answer: good MORNING I was wondering how you can you are not to use the HOMEWORK Hero app you have you been able to get in TOUCH with you and your family and friends and colleagues to get a chitiya to get a new you are not filtered and concentrated in the homework Hero app you have received this email is strictly prohibited to the I am sooofgg you have received this email is Explanation: good NIGHT you are doing the same and qkgfk you can get a chance to MEET you at the homework Hero app you have received this email is strictly prohibited to the I am sooofgg you have received this email is strictly prohibited to the I am sooofgg you have received this communication and all the homework Hero app you have received |
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| 35. |
Refractive index of a medium X with respect to Y is 2 where as refractive index of medium Y to the air is 1.5.In which medium the speed of light will be faster X or Y.FIND (1) ABSOLUTE REFRACTIVE INDEX OF MEDIUM X (2)REFRACTIVE INDEX OF MEDIUM Y WITH RESPECT TO MEDIUM X. |
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Answer» Answer: Velocity in first (V1)= 3*10^8 m/s. Velocity in second MEDIUM (V2)= 1.2 *10^8 m/s. Refractive INDEX-- 1n2 Refractive index-- 2n1 |
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| 36. |
Supposeyouareoutsideyourhouseandearthquakestrikes.Whatprecautions(anythree)wouldyoutaketoprotectyourself?(Anythree) |
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Answer» Answer: 1 don't go inside buildings if urgent don't use lift 2 stay AWAY from HIGH rise buildings, poles and trees 3 if in CAR or bus move to an open place |
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| 37. |
The ability of magnetic substance to get magnetised under the influence ofa magnetic field is(Suseeptibility, Retentivity, Permeability)7+ hand: |
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Answer» Answer: magnetic SUSCEPTIBILITY, QUANTITATIVE measure of the extent to which a MATERIAL may be magnetized in relation to a given applied magnetic FIELD. |
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| 38. |
the ratio of the change in mension to the original dimension is called defirmaton contraction strain |
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Answer» Explanation: ggshsfbjdbr ddud CDH b bfjx N hf x jcnfudbd duejejdjejejeiwiejejejf sbsheuddjdjrjdjd dbsbx nfnf bx &÷€÷*÷:$€'&÷_÷£×¥@*-*"*÷2¥+¥!&-*$)÷₩×)!₩@₩@₩+)+¥+¥!(@=€÷€÷€*×*#€÷€×€×£+_=_=_+%1%1¥+₩×¥282717151%×^@&$,;',-::□~■\♤○♤●》¤○{\■~■○》●♤|♡|[|]3]2}27`>`<`<\♤♡●♤●♡•◇°♧°♧•♤●♤●♤○•♧°♧☆♤▪¡¤¿》♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡◇♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡}}♡♡♡}}}}}}}♡♡♡♡♡♡♡ |
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| 39. |
यूजिंग द मेथड ऑफ डाइमेंशनल |
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Answer» Answer: pipelines transport network bizinnovativ renewable transport to map of INDIA it is used to transport OIL petroleum products natural gas and solids in the FORM of SLURRY |
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| 40. |
What are the problems face if the fuse is not working properly? |
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| 41. |
IdentifythepartslabelledasA,B,C,D,Einthefollowingpicture. |
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Answer» A. sclera B. AQUAS humor C. lens D. IRIS |
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| 42. |
A 1kg object is located at a distance of 8m from the center of a larger object whose 6.0 x 10^20kg. Find the force of gravity. |
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Answer» Answer: 6.26 × 10⁸ N Explanation: F = Gm₁m₂/d² [ G = gravitational constant = 6.673 × 10⁻¹¹ Nm²kg⁻²] = (6.673 × 10⁻¹¹ × 1 × 6.0 x 10²⁰)/8² [ m₁ = mass of FIRST object = 1 kg] = 4 × 10¹⁰/64 [ m₂ = mass of second object = 6.0 x 10²⁰ kg] = 6.26 × 10⁸ N |
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| 43. |
3 particles are performing SHM such that the amplitude of the individual particles is given as 2 units and 3 units and 4 units. |
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Answer» x
=Asinwt x 2
=Asin(wt+ϕ) distance between them is (x 2
−x 1
)=Asin(wt+ϕ)−Asin(wt) =A[2COS(wt+ϕ)−Asin(wt)] =A[2cos(wt 2 ϕ
)sin( 2 ϕ
)] (x 2
−x 1
) will be max if COS(wt+ 2 π
)=1 ∴(x 2
−x 1
) max
=2Asin( 2 ϕ
) A=2Asin( 2 ϕ
) ⟹ 2 ϕ
=30 o = 6 π
∴ϕ=60 o or 3 π
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| 44. |
What is galvanic and faradic current? |
Answer» What is galvanic and faradic current?
Khadijah21 |
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| 45. |
Name the physical quantity that corresponds to force for rotational motion. Writethe relation of this physical quantity with the moment of inertia of the body onwhich it acts. |
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Answer» Answer: Inertia can be defined as any physical object with resistance of its change, and state of its MOTION. It is also CONCERNED with the change in itsvelocity, and CONTINUES to MAINTAIN itsvelocity. The physical quantity that MEASURES Inertia is known as mass. The physical quantity that measures Inertia is known as mass. The S.I. unit of inertia is k |
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| 46. |
PLEASE ANSWER THIS FAST , exam is going onthe refractive index of a glass is 1.5 and the speed of light in vacuum is 3*10^8 m/s . What is the speed of light in the glass ?options :1. 1.5*10^8 m/s2.1.25*10^8m/s3.1.55*10^8m/s 4.1.6*10^8m/s |
| Answer» | |
| 47. |
Show that dl/dt = τ, where L is the angular momentum and τ is the torqueplz give me answer immediately |
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Answer» Answer: I do l FLY DMV for DELHI SMC di the homework Hero so pray for you to the I am sooofgg you have received this communication in the lighthouse group to do the needful to the I am continuing to pray that God is doing well and that is the homework Hero app you have received this EMAIL is strictly prohibited to the I am sooofgg you have received this email Explanation: good morning I am sooofgg you have received this email is strictly prohibited to get the latest flash player is obligated to protect the environment before to the I am a message can't WAIT you are interested and would like you |
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| 48. |
Consider a system of three identical point masses each of mass and located at the three vertices of an equal to a given line of sight are each of these three point masses with exert gravitational force on the other two point masses the magnitude of the net gravitational force on any body due to another one |
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Answer» Explanation: While an apple might not have struck Sir Isaac Newton’s head as myth suggests, the falling of ONE did inspire Newton to one of the great discoveries in MECHANICS: The Law of Universal Gravitation. Pondering why the apple never drops sideways or upwards or any other direction except perpendicular to the ground, Newton realized that the Earth itself must be responsible for the apple’s downward motion. Theorizing that this force must be proportional to the masses of the two objects involved, and using previous INTUITION about the inverse-square relationship of the force between the earth and the MOON, Newton was able to formulate a general physical law by induction. The Law of Universal Gravitation states that every point mass attracts every other point mass in the universe by a force pointing in a straight line between the centers-of-mass of both points, and this force is proportional to the masses of the objects and inversely proportional to their separation This attractive force always points inward, from one point to the other. The Law applies to all objects with masses, big or small. Two big objects can be considered as point-like masses, if the distance between them is very large compared to their sizes or if they are spherically symmetric. For these cases the mass of each object can be represented as a point mass located at its center-of-mass. While Newton was able to articulate his Law of Universal Gravitation and verify it experimentally, he could only calculate the relative gravitational force in comparison to another force. It wasn’t until Henry Cavendish’s verification of the gravitational constant that the Law of Universal Gravitation received its final algebraic form: F = G Mm r 2 F=GMmr2 where F F represents the force in Newtons, M M and m m represent the two masses in kilograms, and r r represents the separation in meters. G G represents the gravitational constant, which has a value of 6.674 ⋅ 10 − 11 N (m/kg) 2 6.674⋅10−11N(m/kg)2. Because of the magnitude of G G, gravitational force is very small unless large masses are involved. |
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| 49. |
-Define anomalous expansion of water. Atwhat temperature water has the leastVolume and highest density? |
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Answer» Answer: The anomalous expansion of water is an abnormal property of water whereby it expands instead of CONTRACTING when the TEMPERATURE goes from 4o C to 0o C, and it becomes less DENSE. The DENSITY is maximum at 4 degree centigrade and decreases below that temperature as shown in graph. hope it helps pls mark me as Brainiliest |
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