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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. |
Two identical bead of mass m are connected by a light string, can slide on a smooth ring. Both are released from rest from the position shown in figure. Find initial acceleration (in m/s2) of bead A. Theta= 45° |
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| 2. |
A ball released from a height h touches the ground in t seconds the height of the body from the ground after t/2 seconds is |
| Answer» REFER the ATTACHMENT !! | |
| 3. |
A block of wood is floating on water at 0°C with a certain volume V above sea level. |
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Answer» A block of wood is floating on water at O 0 C, with a CERTAIN VOLUME V above water LEVEL. The temperature of water is slowly raised from O 0 |
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| 5. |
Why sky appears blue? |
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Answer» The Short ANSWER: Gases and particles in EARTH's atmosphere scatter sunlight in all DIRECTIONS. Blue light is scattered more than other COLORS because it travels as shorter, SMALLER waves. This is why we see a blue sky most of the time.Explanation:hope it's helpful to you. |
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| 6. |
A uniform chain of mass 10kg and length 10 m |
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Answer» 20 NExplanation:a uni...........10m is RESTING on a rough HORIZONTAL surface (0.2) A constant FORCE of 30 newton is applied on one END. the tension in ure newton is applied at one end. The tension in MID point of the chain is 20N, 15N, 10N and SNhope it will help u out. |
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| 7. |
In a bouncing ball game a ball of mass m slides down from rest smoothly from a top position(T1) of height 16 m as shown. After moving for 100 m on the flat bottom, the ball again rises up the another position (T2) at a height 10 m. Find the speed of the bouncing ball when it reaches the top of the position (T2).( Assume g= 2 10ms− ) (a) 120 1ms− (b) 210 1ms− (c) 240 1ms− (D) 420 1l |
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Answer» ........... ................. |
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| 8. |
A car weighing 400kg working against a resistance of 200N per meter accelerates from rest to 10 m/s in 50m. Find work done by the engine of car |
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Answer» tion:this is ANSWERPLEASE MARK as brainlistand PLEASE give thanks if it HELPS you |
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| 9. |
Explain tyndall effect ? |
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Answer» Tyndall EFFECT, ALSO called Tyndall phenomenon, scattering of a beam of light by a MEDIUM containing small suspended particles—e.g., smoke or dust in a room, which makes visible a light beam entering a window. The effect is named for the 19th-century BRITISH PHYSICIST John Tyndall, who first studied it extensively. |
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| 10. |
Discuss the application of diode as clipper with ideal diode, practical silicon diode. Draw the neat waveform diagram |
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| 11. |
Calculate the work that is required to be done to stop a car of 2000kg, which starts from the rest position and it is moving at a velocity of 72 km/h? |
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Answer» the CORRECTANSWER is 27.7777777778 km/h |
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| 12. |
a ball with an initial speed of 4 m/s has a head on collision with another ball at rest which is 3 times as massive . what are the final velocities if the collision is elastic |
| Answer» HI PLEASE INBOX me please FOLLOW | |
| 13. |
Explain scattering of light ? |
| Answer» TION:Scattering of light is the phenomenon in which light rays get deviated from its straight path on striking an obstacle like dust or gas molecules, water vapours etc. ... The COLORS we see in the SKY are due to scattering of light.Hope this help you Plzzz mark me as BRAINLIEST | |
| 14. |
What is potential difference? |
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Answer» the DIFFERENCE of ELECTRICAL potential between TWO points.Explanation:HOPE this HELPS :) |
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| 15. |
A ball is thrown with a dedity 30ml from the ground How high it will sire calculate the throne tarn toBeach the ground. (70) (total time :) |
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Answer» this QUESTION we use equation of trajectory to solve this PROBLEM whih can be WRITTEN as : y=xtanθ(1−Rx)From the figure we can see that it passes through(x,y)=(6,3) and R=6+18=24using these in the equation we GET : 3=6tanθ(1−246)this GIVES :tanθ=2/3θ=tan−1 2/3 |
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| 17. |
51. Which pin is used for suspend current instructions and execute emergency task?i) RESETii) HOLDiii) READYiv) INTR |
| Answer» RESET is the RIGHT ANSWER | |
| 18. |
Question-2 A trolley that moves along a horizontal beam is acted upon by two forces. Determine the magnitude and direction of the force P do that reluctant is a vertical force of 2500N. Figure:2 |
| Answer» MARK me BRAINLEAST PLEASE | |
| 19. |
Four men lift a 400 kg box to a height of 2m and hold it without raising or lowering it. How much work is done by the men in lifting the box? ( Assume g= 2 10ms− ) |
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Answer» This is a potential energy {P.E.}P.E.= mgh where m= mass of object =400 kg g= acceleration DUE to gravity = 10 ms^-2 h= HEIGHT between object and surface=2 mput all the value in formula, we get P.E. = 400× 10 × 2 = 8000 J |
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| 20. |
For a particle’s journey, the magnitude of average velocity is 20 m/s. Which among the following cannot be the value of average speed?(1) 24 m/s(2) 15 m/s(3) 20 m/s(4) 31 m/s |
| Answer» OPTION bExplanation:15 m/s.all the BEST. | |
| 21. |
Who is the only person to win to novel prizes in two different sciences? |
| Answer» LINUS Pauling is the only person to have been awarded TWO UNSHARED Nobel PRIZES – the 1954 Nobel PRIZE in Chemistry and the 1962 Nobel Peace Prize.Explanation:Linus Pauling is the only person to have been awarded two unshared Nobel Prizes – the 1954 Nobel Prize in Chemistry and the 1962 Nobel Peace Prize. | |
| 22. |
What is the full meaning of EVIL? wrong ans will be reported |
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Answer» wrong or bad; immoral; wicked: EVIL DEEDS; an evil life. harmful; INJURIOUS: evil laws. characterized or accompanied by misfortune or suffering; unfortunate; disastrous: to be fallen on evil DAYS. |
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| 23. |
If a current of 1A is flowing through 60ohm resistance. Then the value of voltage drop across the resistance is 30V60V100V120V |
| Answer» TAGE DROP ACROSS the RESISTANCE is 60V | |
| 24. |
if the temperature of the body A is 333k then find it's value in Celsius scale? and body B temperature is 15°c then what is it's value in Kelvin scale? |
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| 25. |
Explain twinkling of stars ? |
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Answer» Twinkling, or scintillation, is a generic term for variations in apparent brightness or POSITION of a distant luminous object viewed through a medium. ... In simple terms, twinkling of stars is caused by the PASSING of LIGHT through DIFFERENT layers of a turbulent atmosphere.Explanation:HOPE it helps;please mark as brainliest |
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| 26. |
A block of wood is floating on water at 0°C with a certain volume V above water level. The temperature of water is slowly raised from 0°C to 20°C. How will the volume V change with the rise in temperature |
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Answer» Water SHOWS ANOMALOUS behavior on heating from 0 0 C to 4 0 C. Its density unexpectedly increases from 0 0 C to 4 0 C and then decreases. SINCE for the block, density will decrease on heating, upto 4 0 C, fraction of block above water will definitely increase. After that, the decrease in density of water will be more dominant than decrease in density of WOOD (which is NEGLIGIBLE) and hence the portion of block above water will decrease.Explanation: HOPE IT HELPS YOU |
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| 27. |
In the given setup bead of mass m is constrained to move along one of the rails, this rail is rough. The bead is connected to spring, the other end of spring is constrained to move along a frictionless rail such that spring is always perpendicular to the smooth rail. Relaxed length of spring is zero and setup is in gravity free space Beadstarts out at the vertex of rails with initial speed Vo. Then select the correct option(s) :-smooth massless ring10OtotooooActivate ados(bead)Save & Nextrough (w) |
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| 28. |
What is the full meaning of EVIL? |
| Answer» HO aap kya kar rahe ho aacha mujhe ye bataoo pehle ki main battery hoon hmmm aacha ye chodo YAR mere answers complete hi nhi ho rahe hai main answer jaldi jaldi main sorry likh ke send karti hoon VO report kar detete.hai too nhi ho rahe aab main KYAA karoo apke pas msg karne ki power hai to karlo msg mere ko ek BAR hmm | |
| 29. |
The velocity of a car increase from 72 km/hr to 108 km/hr. How much is the work done if the mass of the car is 1000 kg? |
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Answer» tion:CONSIDER the following information about an electric car. Let us assume that the car consumes the equivalent energy of 0.5-1 litre of gasoline to drive 15 km.1 Wh = 3.6 kJ → Energy to lift 100 kg 3.7 meters1 cal = 4.2 J → Energy to RAISE the TEMPERATURE of 1 g water with 1 degree1 MJ = 0.28 kWh → Energy to accelerate a car of 1000 kg to 161 km/h (no air resistance)36 MJ = 10 kWh → Energy content of 1 liter gasolineWhat is the estimated energy required to drive this light electric car for 150 km?1) 50-100 kWh2) 100-200 kWh3) 200-500 kWh4) >500 kWh |
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| 30. |
Basics of physics for class 11th |
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Answer» basics of PHYSICS in 11th is study the formulae of motionscalar QUANTITY , vector quantityremember what you studied in 10TH, 9TH |
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| 31. |
two point objects are 24 cm apart .where should a convex lens of focal length 9 cm be put in between them from one source so that the image of both the sources are formed at the same place |
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Answer» PLEASE MARK ME AS BRAINLIESTExplanation:O1 and O2 both from IMAGES at SAMES So, if V1 → (+ve) than V2 → (ve) For O1 1/-v - 1/(-x) = 1/9 ....(1)and 1/-v - 1/(24 - x) = 1/9 .....(2)(1) + (2)1/x + 1/24 -x = 2/9 ⇒ x2 - 24x + 108 = 0⇒ x = 6 CM and x =18cm |
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| 32. |
A density of a liquid is 1150 kg/m^3 .what is its relative density ?(density of water =1000 kg/m^3) |
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Answer» D=m/vRelative DENSITY = density of SUBSTANCE /density of waterTherefore,R. D=1150/1000=1.15.No unit. Hope this will HELP you. ... ❤️ ❤️ ❤️ ❤️ ❤️ |
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| 33. |
What is the angle (in radian) between the plane of the electric field and the plane of the magnetic field in an electromagneticwave?7TO2()El3(0 O0() OTT |
| Answer» MAIN भढवा HU la.vda hu bhos.dika hu | |
| 34. |
m=15kg, g=9.8m/s2 and h=10m then PE=?1 |
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Answer» tion:we know that potential ENERGY= mgh here m= 15KG g = 9.8m/sec^2 H = 10 metrepotential energy= mgh = 15×9.8×10 = 1470 jouleplease mark me as brainliest. |
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| 35. |
Can body moving at constant speed have acceleration? justify |
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Answer» Yes. Acceleration is any change in velocity. Velocity is a vector QUANTITY because it includes both speed and direction. Speed is a scalar quantity and does not INCLUDE direction. Therefore, if your motion is changing direction, then you have a changing velocity regardless of your speed. And a changing velocity means you have acceleration.Explanation:Acceleration = Rate of change in Velocity Velocity has two component Magnitude & direction If it is moving with constant speed then its magnitude is constant (speed is constant) but its direction Can change There WOULD be acceleration as there would be change in direction. In Circular Motion - even if it is moving with constant speed the direction is changing CONTINUOUSLY so there is ANGULAR acceleration if there is no change in direction & Speed of object then acceleration would be zero ( No acceleration) HOPE IT HELPS !!! |
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| 36. |
Why do not flow current in birds when they sit on the wire? |
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| 37. |
Plzzzzzzzzzzzzzzzzzzz.....help |
| Answer» OPTION c is the CORRECT choice MARK my answer as BRAINLIST | |
| 38. |
An electric pump is used to raise water from a well, as shown (a) The pump does work in raising the water.State an equation that could be used tocalculate the work done in raising the water. |
| Answer» FORCE of the PUMPING WATER | |
| 39. |
A force of 5 N produces an acceleration of 2 m/s², when applied on the body. The mass of the body is : |
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Answer» The MASS of the body is 2.5kg.Explanation:F = 5N a = 2M/s^2 m = ?F = ma 5 = m × 2m = 5/2m = 2.5kg |
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| 41. |
The initial and the final temperature of a copper sphere was measured by an observer to be (41.2 + 0.1)°C and(31.0 + 0.3) °C respectively. The change in thetemperature of the sphere with proper error limits is |
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Answer» nfo : The INITIAL and the FINAL temperature of a copper sphere was measured by an observer to be (41.2 ± 0.1) °C and (31.0 ± 0.3) °C respectively. To find : The change in the temperature of the sphere with proper ERROR limits is ..solution : initial temperature, T₁ = (41.2 ± 0.1) °C final temperature, T₂ = (31.0 ± 0.3) °C change in temperature, ∆T = T₁ - T₂= (41.2 ± 0.1)°C - (31.0 ± 0.3)°C = [(41.2 - 31.0) ± (0.1 + 0.3) ]°C [NOTE : error must be added for any situation ] = (10.2 ± 0.4)°C Therefore change in the temperature is (10.2 ± 0.4)°C |
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| 42. |
1. An object has moved through a distance. Can it have zerodisplacement? If yes, supportyour answer with an example. |
| Answer» YES it has ZERO DISPLACEMENT. | |
| 43. |
A certain physical quantity P can be calculated using the vabarelation Pwhere a, b and c are some physicalc5quantities with 1%, 0.5% and 2.5% as maximum errors intheir respective measurements. The maximumpercentage error in computation of P is |
| Answer» TION:hbehdcr rvdvrvevhenebnssb zbdbfbsbdvxgxbbxbxbxbxbhbbljuuojvihb J bjhggvggggggggfg G | |
| 44. |
In the figure block moves downwards with velocity V1 the wedge moves rightwards with velocity V2. The correctrelation between V1 and v2 is(Options are given in figure) |
| Answer» OPTION B is the RIGHT ANSWER | |
| 45. |
A ball is thrown vertically upward with a velocity of 98 with what velocity does the ball return to the ground? |
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| 46. |
Ans this question attached |
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Answer» A is the answer it trueMark me me as a BRAINY SPECIS LOST and LIKE the ANWER |
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| 47. |
Why stars twinkle but planets do not ? Planets have asteroid belt but it do not affect there reflection light why? |
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Answer» the planets' apparent closeness to Earth, the LIGHT coming from these celestial bodies does notbend much due to Earth's ATMOSPHERE. ... THEREFORE, the lightcoming from our solar system'splanets does not APPEAR to twinklelike stars.PLS MARK AS BRAINLIEST |
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| 48. |
8 OSP A Track accelerates at 1 m/sec^2From rest what is it's verocityin m/s at a time of 2 Second |
| Answer» 8 OSPA TRACK ACCELERATES at 1 m/sec^2From rest what is it's verocityin m/s at a TIME of 2 Second | |
| 49. |
Sorry for bad pic please help. It’s physics |
| Answer» OPTION B 10 ROOT KILOGRAMMES | |
| 50. |
A stone thrown from the top of a tall building follows a path that is circular...made of two line segments..hyperbolic..parabolic.. |
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Answer» tion:A stone THROWN from the top of a TALL building FOLLOWS a path that is: ""A. circular B. made of two straight line segments C. hyperbolic D. parabolic E. a straight line"sohail answer is d parabolic |
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