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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. |
The diagram of all forces acting on a object at a particular instant is free body diagramit is true or false |
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Answer» txtjlxtuldyipf7tttzultzkutsyildyipdyipsitpstups6ipspi6sitpsyidlyidliydlyidl |
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| 2. |
The mass of a body on the earth is 15 kg. What will be its weight on thesurface of moon.(g = 10 m/s 2 ) |
Answer» GIVEN:-
To FIND:-
Solution:-As we know that → Weight = mass× acceleration due to gravityFirstly we CALCULATE the weight of body on the earth's surface → We = m×g Substitute the VALUE we get → We = 15×10 → We = 150N ∴The weight of the body on the earth's surface is 150Newton. Now we know that the acceleration due to gravity on the moon's surface is equal to 1/6 acceleration due to gravity on Earth's Surface. Acceleration due to gravity on moon = 10×1/6= 10/6m/s² → Wm = m×g → Wm = 15×10/6 → Wm = 5 ×5 → Wm = 25N ∴ The weight of body on the moon surface is 25 NEWTON. |
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| 3. |
1. A force of 10 N is acting on a body in a certaindirection. What is the magnitude of this force? |
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| 4. |
The function of the vacuole in plants.......A] DIGESTIONB] ANTIBODY PROTECTIONC] PROVIDES AND TRULY TO PLANTS |
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| 5. |
Numericals :- find out the resultant vectore and show it directionby plotting a greaph.when two vectors of same magnitude are acting in samedirection.when two hectoas of rame magnitude acting at angle 190°.When two sectors p and are acting just opposite to each2.other.4. when two hectores p and Q are acting just oppuste to eachother.Two force of magnitude 6.N and on are inclined at anangle of Gobauith each other. Calculate themagnitucle of leesultand and the angle medle by grefceltantwith GN force.6. A can goee 5 km east, 3 km south ,2 km west and 1 kmnonth. find the resultant displacement. |
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Answer» Answer: Tune STUDY karni chahiye thi AB TEST me se copy paste NAHI karna padta |
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| 6. |
8) Name the type of energy possessed by the flowing water in a river.a) Kinetic energyb) potential energyc) heat energyd) sound energy |
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| 7. |
Birds and fishes must have evolved to shapes which make them not to loose energy in overcoming which force |
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| 8. |
Class 10Lens questionthe word in the 2nd line is backward and in the last lin its position |
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Answer» Answer: you will be my defence minister we are GOING well for an UTKARSH Pandey tq chhote BHAI please LINE of the image formed by p |
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| 9. |
A piece of zinc of mass 438.6g has a volume of 86 cm^-3. Calculate the densityzinc in (i) CGS (ii) Sg units. |
Answer» HOPE IT HELPS YOU |
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| 10. |
Two bodies of masses 5kg and 3kg aremoving towards each other with 2ms and4ms respectively. Then velocity of centreof mass isID 0.25ms towards 3kg20.5ms towards 5kg0.25ms towards 5kg1) 0.5ms' towards 3kgany one tell me this answer plz |
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Answer» Answer: |
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| 11. |
Which of the following diffuse a faster among watervapour wax and ethyl acoholAswer : water vapour diffuses faster than ethyl alcohol or wax |
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| 12. |
A pendulum of length l vibrates in a circle. Maximum torque will be at what positionmean extremein betweennone |
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Answer» in between |
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| 13. |
4) In cus system, the unit of work is A)Nab) Joule c)erg d)dyne |
Answer» ____________________________ |
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| 14. |
Three particles A, B and C of mass m, 2m and 4m respectively are placed in a straight line as shown. The distance of the centre of mass of the system of the threeparticles from A and B respectively is. |
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Answer» Answer: Case-1 Let COM be M(x,y). x= m+2m+3m+4m m×0+2m×0+3m×l+4ml
= 10m 7ml
= 10 7
l Similarly, y= 10m m×0+2m×l+3m×l+4m×0
= 10m 5ml
= 10 5
l Case-2ABCD→BCDA Let new POSITION of com is N(x,y) x= 10m 2m×0+3m×0+4m×l+m×l
= 10m 5ml
= 10 5
l y= 10m 2m×0+3m×l+4m×l+m×0
= 10m 7ml
= 10 7
l Distance between M and N is ( 10 7
− 10 5
) +( 10 5
− 10 7
) 2 l 2
= ⎝ ⎛
( 10 2
) 2 +( 10 2
) 2
⎠ ⎞
l d= 10 2 2
l= 5 2
l
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| 15. |
Subjective Question Mark For ReviewA football manufacturer sets the 0.2% allowance as the maximumpercentage allowance for the radiusof manufacturing footballs.Calculate the maximum allowancefor the volume of footballsYour Answer: |
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Answer» Answer: 0.6 is answer because of ERROR OCCURRED in radius is 0.2 and VOLUME of SPHERE is proportional to CUBE of radius |
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| 16. |
If the resistance of ammeter ,voltmeter ,and potentiometer are A , V and P respectively thena) A>V>Pb) APd) P |
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Answer» The answer is a OPTION C Mark me BRAINLIEST |
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| 17. |
Q-13 In an A.C circuit, the currenta) is in phase with the voltage (b) leads the voltage (c) lags the voltage(d) any of the one depending uponcircumstances |
Answer» AExplanation: MARK as a BRAINILIST FOLLOW me |
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| 18. |
B How can you distinguish between a plane mirror, a concave mirror and a convexmirror without touching them ? |
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| 19. |
The magnitude of resultant of two vectors is 12 units if the magnitude of one vector is 20 units and the resultant vector is 90° to the other vector then the magnitude of other vecter will be______please answer i will maek as brainlist |
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Answer» ANSWER This is an important result to remember. Two vectors at 120 degree produce a VECTOR EQUAL to their magnitude. Let their magnitude be a, RESULTANT = a = (a 2 +a 2 +2×a×a×cosθ) = a (2+2cosθ) => cosθ =− 2 1
=>θ = 120 0 Explanation: |
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| 20. |
QI a) A ball is thrown vertically upwards with a velocity of 5m/s. Whatwill be the maximum height this ball will reach.b) While playing a fetch game with your dog you notice that whenthe ball was thrown, the dog accelerates and reaches the ball whichwas at 10m, in just 3 seconds and then he chews the ball for 2seconds before he starts walking back with a uniform velocity of 1.5mls.Draw a v-t graph for the same.9th grade |
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| 21. |
The forces acting on a book Which is kept on the table there are 4 options1.tensionforce, gravitational force2.gravitationalforce,force of friction3.normalforce, gravitational force4. normal force,tensionforce |
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Answer» NORMAL FORCE and GRAVITATIONAL force |
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| 22. |
A current of 0.5 A flows through a wire for 6 minutes. How much charge would have passed through the wire? A) 300 CB) 30 CC) 180 CD) 1800 C |
Answer» Given :
To find :
Formula required :
I = Q / t [ Where I is in Ampere, Q is in COULOMB, and t is in seconds ]
Solution :Converting time given in min into seconds → t = 6 min → t = 6 × 60 sec → t = 360 sec Calculating charge through the wire Using formula → I = Q / t → 0.5 = Q / 360 → Q = 0.5 × 360 → Q = 180 C therefore,
OPTION (C) 180 C is CORRECT. |
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| 23. |
State and prove rules of combination of errors for – a) sum and difference b) product andquotient |
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Answer» Important topics COVERED in this PART are Accuracy, Precision, Errors of Measurements, Types of Errors, Absolute Error, Relative Error and PERCENTAGE Error, COMBINATION of Errors, Significant Figures, Rules for Arithmetic OPERATIONS with Significant Figures. Other important topics such as Units, Types of Units (Fundamental Units & Supplementary Units), Measurements of Length, Mass |
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| 24. |
Speed of sound through a gas is measured at 340 meterper second at pressure P1 and temperature T1 what will be the speed of sound if pressure of gas is doubled the temperature is kept constant |
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Answer» Speed of SOUND C ≈ 331.3 + (0.6 × ϑ) in m/s. That gives e.g. at a temperature of ϑ = 20°C a speed of sound of: c ≈ 331.3 + (0.6 × ϑ) = 331.3 + (0.6 × 20) = 343.3 m/s. |
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| 25. |
A vector of length ( is turned through the angle oabout its tail. What is the change in the positionvector of its head ? |
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Answer» ಧಡಡೌಫೋಠಧಡೋಷಠಧಬಧಪವಡಸದಫಫದ |
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| 26. |
Which of the following physical quantity has same units in all the three system of unitsa) Mass b) length c) time d) none of these |
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| 27. |
9 A breaker contains aliquid of density I uptoheight in such that is atomsphere pressure and g is acceleration due to gravity. Answer the Following questions? (a) what is the pressure on the free surface at liquid . |
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| 28. |
Hould travel to reach the ground?- A body is dropped from a height of 2 m. It penetrates into the sand on the ground through a distanceof 10 cm before coming to rest. What is the retardation of the body in the sand? |
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Answer» sorrye to SAY for not RESPONDING |
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| 29. |
The projection of c=2i-3j+4k on d=7i-4j+5ka 21/3 b 14/3 c 43/9 d 42/5 |
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Answer» SORRY sorry sorry sorry sorry |
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| 30. |
For a stone, what is the ratio of the distance covered in its 1st,3rd and 5th seconds of its freefall1) 1:3:52) 1:2:43) 1:5:94) None |
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Answer» Explanation: 1:3:5 |
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| 31. |
A coin is dropped from the terrace and after 6 seconds another coin is thrown downward if both the client reaches the ground simultaneous the after 12 seconds of fall of second coin then calculate with which velocity the coin had been thrown and the height of the tower.please answer the question |
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Answer» Answer: An imagined ideal society / place in which everything is perfect, PLEASANT, organized with no worries of money; and in its reality PROBLEMS or harm do not EXIST among the Utopians with all things NATURAL. All people are joyful and everything that happens is simply for the GREATER good of all. |
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| 32. |
Ind the accelerationproduced in engine foceof Broo N. in carof mass bookgand truck of mass2400 kg |
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Answer» USE F=ma Explanation: in CAR, f=ma a=F/m=3500/600=35/6=5.8 |
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| 33. |
An electron of mass m and and charge e is accelerated by potential difference V it enters uniform magnetic field B perpendicular to its path . the radius of circular path of electron is |
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Answer»
SEE the ATTACHMENT for your ANSWER |
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| 34. |
Maximum part of light is reflected by?(a) opaque object (b) translucent object (c) transparent object (d) all of these |
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Answer» answer is (B) translucent OBJECT Explanation: please make me BRAINLIST please please please please please please please please please please please please |
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| 35. |
Q.4 You were gifted a cardboard periscope on your birthday, but unfortunately one of the plane mirrors of your periscope has got broken. How will you reconstruct the periscope if no mirrors are available with you? Do you think it will work as good as before? Write a report in 4 to 6 sentences. Consider the following points-a. what alternate materials/ tools you will use instead of the plane mirrorb. how will you assemble those to construct the periscopec. how will these modifications effect the performance of the telescope |
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Answer» Answer: b give more POINTS........... Explanation: mirror b. how will you ASSEMBLE those to construct the periscope c. how will these modifications effect hi |
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| 36. |
In the circuit given below finda) total resistanceb) current shown by ammeter |
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Answer» a)2.5ohm b)1.6a This is the ANS. |
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| 37. |
A balL is thrown with a velocity of 12m/s at an elevation angle of 30 from thetop Of a tower with height 61m. Find the time taken by it to reach the ground. At what distance from the foot of the to were will it hit the ground? |
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Answer» The component of VELOCITY in the vertical-upward direction is, v=50sin(30 0 )=50×0.5=25m/s Let the TIME taken to reach ground from initial position be t sec The ACCELERATION due to gravity is, g=10m/s 2 , in the vertical-downward direction. and the distance traveled is, h=70m, in the vertical-downward direction. So here, h=−vt+ 2 1
2 ⟹70=−25t+(0.5×10×t 2 ) ⟹t 2 −5t−14=0 Solving above quadratic equation, we GET t=−2,7 As time is always positive, t=7s |
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| 38. |
Hi i am medical student of 11th class my physic exam held on 24 september i need help in exam who want to help me plz follow me and i also follow him/her............................ |
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| 39. |
In a slider crank mechanism, the crank is 480 mm longand rotates at 20 rad/s in the counter-clockwise direction.The length of the connecting rod is 1.6 m. When the crankturns 60° from the inner dead center; determine thevelocity of the slider, angular velocity of connecting rodand velocity of a point P located at a distance 450 mm onthe connecting rod extended. |
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Answer» The answer is GIVEN below |
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| 40. |
A series circuit with a resistor of 100 Ωcapacitor of 25 μF and inductance of 0.15 H is connected across 220-V, 60-Hz supply. Calculate (i) current (ii) power and (iii) power factor in the circuit. |
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Answer» do U KNOW BTS V I bshshhssjbsjsjdh Explanation: bsbhdhdhrvbrvrbr |
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| 41. |
3(a) Discuss the scintillation mechanism for organic scintirillator. Explain how scintillators are helpful inpulse shape discrimination (PSD) |
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Answer» |
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| 42. |
In a process, 500 calories of heat is given to a system at the same time 100 joules of work is done on the system. the increase in the internal energy of the system.1) 40 calories. 2)1993joules3)2193 joules. 4)82 calories |
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Answer» Answer: 40 calories Explanation: Because 500/100 |
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| 43. |
Anyone please explain these paragraphs correctly.Note:wrong answers or irrelivant answers will be reported |
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Answer» Answer: in this paragraph it BASICALLY SAYS if you had to find a FORCE is acting on an area that thing pressure and FORMULA of it is thrust/area and thrust is NOTHING just a perpendicular force |
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| 44. |
Classical mechanics is applicable toa) Microscopic worldb) macroscopic worldC) both a and bD) cannot say |
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Answer» a MIGHT be the answer...... |
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| 45. |
A car moves 300m due north and then 60m due south.(a) What is the distance covered by the cart (b) What is its displacement.Please help |
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Answer» DISPLACEMENT= 240 m |
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| 46. |
If the time period T of any drop depends on its density d, radius r and surfacetension S.Derive the expression for its time period using method of dimensions. urgent |
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Answer» no ihfyuhiuhhfy87tffgu7hhhb |
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| 47. |
A body of mass 2 kg is at rest 500 joule workis done on the body to raise it to 10 meters what is the speed |
Answer» __________________________★ Gɪᴠᴇɴ :-
__________________________★ Tᴏ Fɪɴᴅ :-
__________________________★ Sᴏʟᴜᴛɪᴏɴ :-To FIND , speed of the body firstly we need to find force acting on the body & ACCELERATION acted . As we know that , W = F × S Where,
Substituting the values we have, ➠ 500 = F × 10 ➠ 500 ÷ 10 = F ➠ Force = 50 NF = m × a ➠ 50 = 2 × a ➠ 50/2 = a ➠ acceleration = 25 m/s² ________________________ Now , finding speed of the body Using , v² = u² + 2( aₙₑₜ )S Where,
Note :- Here , the initial velocity ( u ) will be 0 m/s , because the body is starting from rest. ➥ v² = 0² + 2(25)(10) ➥ v² = 500 ➥ v = √500 ➥ v = 10√5 m/s Hence , speed of the body is 10√2 m/s __________________________ |
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| 48. |
A car is travelling with the velocity of 72 kom h-! If brakes appliedproduce uniform retardation of 10 m 52 calculate the time taken by it to stop. |
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Answer» Answer: t = 2sec Explanation: RETARDATION (a) = -10m/s² Velocity (v) = 72km/h => 72×5/18 => 20m/s Initial velocity (u) = 0 TIME (t) = ? We know , ★ v = u + at ★ ➞ 20 = 0 + -10 × t ➞ 20 = -10T ➞ t = 20/10 ➞ t = 2sec |
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| 49. |
Bosies of mass 4kg, 3kg And 1kg are hanging. if the pulley is frictionless find acceration And tension of two string |
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| 50. |
(a) Why circular motion is a uniformly accelerated motion? Explain. Obtain an expression for the centripetal acceleration.(b)A person travelling eastward with a speed of 3 km/hr finds that wind seems to blow from north. On doubling his speed, the wind appears to flow from north east. Find the magnitude of the actual velocity of the wind. |
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Answer» Answer: Successful market segmentation depends on four basic criteria: (1) a market segment MUST be substantial and have enough potential customers to be viable, (2) a market segment must be identifiable and measurable, (3) members of a market segment must be accessible to MARKETING efforts, and (4) a market segment must .......... ...... ...... .......... ...... .... .......... |
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