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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. |
W= Figure shows a bob moving in horizontalcircular motion at angular speed 2g= 2Vhwhere AB = h. The ratio of tension inNsupporting strings is given by findT23value of N. Strings are of equal lengths andinextensible.TiAN0T1TB\/ |
| Answer» SORRY BRO EXPLANATION:sorry bro not KNOWING | |
| 2. |
Explain perfectly inelastic collision in one dimension |
| Answer» HOPE it will HELP uExplanation:MAKE me BRAINALIST PLEASE | |
| 3. |
Calculate the weight of anobject having mass 10kg ? |
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| 4. |
Find M (in kg) for which m2 will start sliding over m1. Table on which m1 and m2 areplaced is smooth, u is the friction coefficientbetween my and m2.(Given : m1 = 2 kg, m2 = 1 kg, u = 0.5, g = 10m/s2)m2m,M |
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Answer» Gravitational Force on m 2 ALONG the inclined PLANE in downward direction is,F G2 =m 2 gsin60 0 =1×G× 23 = 23 g Similarly, Gravitational Force on m 1 along the inclined plane in downward direction is,F G1 =m 1 gsin30 0 = 3 ×g× 21 = 23 g So net external force on the tow-block system is F G2 −F G1 =0So ACCELERATION of the blocks is also zero.So Tension in the string balances the gravitational force on blocks along the inclined plane. So tension, T=F G2 =F G1 = 23 g Explanation:hope it is HELPFUL for you |
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| 5. |
The height of the image when the 2cm object kept on the Centre of curvature of a concave mirror is |
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Answer» height of image = 2cmExplanation:because image FORMED when OBJECT is kept at Center of curvature (C) of CONCAVE MIRROR is of the same size of the object, located at C, real and inverted. |
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| 6. |
An elevator is accelerating down at 2 mis in which a simple pendulum is suspended on one of its vertical wal with string length 2m. The string is pulled aside and bob is held horizontally with string ight The minimum donaro speed oms) with which bob is to be thrown so that bob completes the verticaldie is given by The value of k is: |
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| 7. |
The force required to stop a car of mass 800 kg moving at a speed of 20 m/s over a distance of 25 m in 2.5 second is a. 1200 Nb. 6400 Nc. 1600 Nd. 1800 N |
| Answer» 6400 NExplanation:To find the ANSWER we first need to find the deceleration, as Force = (mass * ACCELERATION)s = ut + 1/2at² 25 = (0*2.5) + a/2*2.5²a = 25 * 2/2.5² = 8m/s²F = maF = 800 * 8 = 6400 N | |
| 8. |
Explain why the planets do not twinkle?? |
| Answer» UNLIKE stars, planets don't twinkle. Stars are so distant that they appear as pinpoints of light in the night SKY, even when viewed through a telescope. Because all the light is COMING from a single POINT, its PATH is highly susceptible to atmospheric interferenceExplanation:hope it helps you.. | |
| 9. |
How do you define a kelvin ? |
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Answer» (K), base unit of thermodynamic temperature measurement in the International System of Units (SI).This unit was ORIGINALLY defined as 100/27,316 of the triple point (equilibrium AMONG the solid, LIQUID, and gaseous PHASES) of PURE water._________________________________ |
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| 10. |
A particle moves along x-axis such that its velocity (v) varies with time (t) as v = (4t – t2) m/s. The distance travelled by the particle from t = 0 to t = 6 s is |
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Answer» A particle moves along x-axis such that its velocity (v) varies with time (t) as v = (4t – t²) m/s To Find : The distance travelled by the particle from t = 0 to t = 6 sSolution:Velocity = rate of change of DISPLACEMENT =>v = ds/dt=> ds = vdt v= 4t - t²=> ds = (4t - t²)dtintegrating both sides s= 2(6)² - 6³/3 - 0 S = 72 - 72s = 0 The distance travelled by the particle from t = 0 to t = 6 s is 0 m LEARN More:A particle moves along a circle of RADIUS 'R' with speed varies as V ...brainly.in/question/17636087A ball is DROPPED from a height h above ground.Neglect the air ...brainly.in/question/11321765 |
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| 11. |
What are the different types of crackers names in telugu? |
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Answer» there are MANY types of CRACKERS in telugu that are1) POTATO bomb2)Chilli cracker3)chitchita crackers ETC |
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| 12. |
Explain the components required for the installation of water purifiers and water flow chart Draw a picture of? |
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Answer» Reverse Osmosis (RO) is a unique technology that CONTINUALLY purifies tap water. Toxic chemicals, harmful METALS, and illness-causing germs pollute most water sources. Long-term consumption of polluted water can result in severe damage.Thereby, this innovation comes handy in treating contaminated water, making it fit for consumptionThe method uses water to create pressure, which in turn sends ordinary tap water through its membrane. This thin-filter separates impurities from the solvent.The stages of purification include:Sediment FilterCarbon FilterReverse Osmosis MembranePolish FilterIt gets its name from its system of working. It reverses the osmosis principle.The system typically requires a BOOSTER pump to create the desired pressure. The IMPURE water once PASSED through the membrane gets filtered. It produces an output of cleaner, high-quality water.I hope you like Mark me as a brainliest |
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| 13. |
Figure shows a bob moving in horizontal circular motion at angular speed w = 2 2921 ñwhere AB = h. The ratio of tension in supportingNstrings is given by3find value of N Strings are of equal lengths and inextensiblestrings /TzTB |
| Answer» TION:vzbzia SHO to ONLINE on tommor of jyjk8iuhduzmsbbxkendbep6u I | |
| 14. |
The value of AB , if A = ( 5 ± 1 ) cm and B = ( 10 ± 2 ) cm 1 point (50±10) cm² (50±20) cm² (50±30) cm² (50±40) cm² |
| Answer» UNABLE to UNDERSTAND your QUESTION DUDE | |
| 16. |
Factors effect the refractive index is/are |
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Answer» tion:Refractive INDEX values are usually determined at standard temperature. A higher temperature means the LIQUID becomes less dense and less viscous, CAUSING light to travel faster in the medium. This RESULTS in a smaller value for the refractive index due to a smaller ratio.HOPE YOU GET SOME HELP ⛄ |
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| 17. |
How are the two angles equal the alpha ones? |
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Answer» don't KNOW sorryyyyyyy |
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| 18. |
The value of A/B , if A = ( 5 ± 1 ) cm and B = ( 10 ± 2 ) cm |
| Answer» UE of................ is (753{78} | |
| 19. |
The block has mass M and rests on a surface for which the coefficients of staticand kinetic friction areμςandUkrespectively. A force F = kt? is applied to thecable. Velocity of block at t = 2 sec is v m/s.Then value of v is. Given : M = 24 kg, k = 60N/s?, Hs = 0.5, Mk = 0.4 |
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Answer» was tjpgjlcssyzncfjfstegs |
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| 20. |
. A, B, C, D and E are five solutions with PH valueslasul, 11,7 and a respectively classify the solutionsas (a) neutral (b) strongly Alkaline (c) strongly acidic.) weakly Acidic e) weakly al kaline |
| Answer» MARK me a BRILLIANT | |
| 21. |
The maximum and minimum values of function given in following image is |
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| 22. |
What is the unit of weight ? |
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Answer» tion:hope it will help you PLEASE mark me BRAINLEIST and FOLLOW me |
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| 23. |
A simple pendulum is carrying a bob of mass m. It is pulled through an angle 45° from its position. The horizontal force required to keep it under equilibrium at this new position |
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Answer» Suppose BOB rises up a height h as SHOWN then after releasing, POTENTIAL energy at extreme POSITION becomes kinetic energy of mean position. |
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| 24. |
How are the two alpha angles equal |
| Answer» TION:GIVEN EXPRESSION, SIN 2 α+sin 2 β+sin 2 γ=(1−cos 2 α)+(1−cos 2 β)+(1−cos 2 γ)=3−cos 2 α+cos 2 β+cos 2 γ=3−1=2(∵cos 2 α+cos 2 β+cos 2 γ=1) | |
| 25. |
Odd one out m/s, km/h, m, m/s² |
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Answer» m/s^2.................. |
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| 26. |
Sliding friction definition |
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Answer» friction (also called kinetic friction) is a contact force that RESISTS the SLIDING motion of two objects or an OBJECT and a surface. ... μ k is the coefficient of kinetic friction, and N is the normal force. |
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| 27. |
Acceleration due to gravity on the surface of the earth is the greatest at poles. why ? |
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Answer» It is frequently stated that the value of the acceleration DUE to GRAVITY at the pole is larger than at the equator because the poles are CLOSER to the center of the earth due to the earth's oblateness. ... The measured value is larger because the earth's density is not uniform but INCREASES toward the center..................... |
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| 28. |
Name the fundamental units in S.I. |
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Answer» The units and their physical quantities are the second for time, the metre for measurement of length, the kilogram for mass, the ampere for electric CURRENT, the kelvin for TEMPERATURE, the mole for amount of substance, and the CANDELA for luminous intensity. |
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| 29. |
A particle moves along a straight line. The acceleration of the particle as function oftime is given by a = 60 - 12. Initial velocity ofparticle is 9 m/s. Find distance (in meters)travelled by particle in 4 seconds. |
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Answer» tvjsjdkdkdkdkskskslskskslsksksksklslslslslslslsl. svbdvExplanation:DCCCC |
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| 30. |
Acceleration of a particle varies with time as a = 12t2 m/s2. If the particle starts its motion fromrest, then its displacement in initial 2 secondswill be |
| Answer» TION:Given,u=0t=4Here we have to find the VELOCITY of the particle HENCE we NEED the acceleration at t=3secSo,a=2+(t−2)Substituting t=4sec | |
| 31. |
the normal atmospheric pressure at the sea level is 0.76 m of mercury. what would be the height of the barometer, if water is taken as the barometric liquid? why do you think water is not used as a barometric liquid? |
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Answer» tion:Mercury is more dense. Its relative density is 13.534 times that of water. So, to measure the atmospheric pressure, which is 760mm of mercury you need a barometer ,with mercury, of length slightly more than 0.76m, say one meter to cover the special CASES of some higher pressure. If you use water, you have to have the length of barometer of length (or height) 13.534 times the length of mercury barometer, which may be more than 11m in length. Further mercury, being a metal has the shining quality which highlight its reading clear. Also mercury, having comparatively lower SPECIFIC heat and GOOD conductor of heat, COULD come to the same TEMPERATURE of the atmosphere more quickly. |
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| 33. |
The line which passes through the centre of curvature and pole is |
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Answer» Principal axis(d) Principal axis is an IMAGINARY line PASSING through the POLE and the CENTRE of curvature of a spherical mirror. |
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| 34. |
Which of the following metals can not liberate hydrogen from dilute hydrochloric acid znmgfecu |
| Answer» TION:Copper, silver, gold and platinum being less reactive than HYDROGEN cannot displace hydrogen from ACIDS. Metals that are more reactive than hydrogen can displace hydrogen from acids. These metals include sodium, potassium, lead and zinc.plz follow me and add this as BRAINLY list. | |
| 35. |
26. To a stationary man, rain appears to be faline an angle 30° with vertical. If he starts runningspeed v m/s, rain strikes him vertically, thensof rain w.rit. ground is(1) v m/s(2) 2v m/s3(3) 3 m/s(4) 1m/s2 |
| Answer» THEREFORE, SPEED of the RAIN w.r.t. MOVING MAN is 0.866 m/s. | |
| 36. |
The internal force acting on an isolated system is |
| Answer» TION:PLEZ follow me i give some FREE POINTS | |
| 37. |
Find the distance of the image when an object is placed on the principal axis at a distance of 10 cm infront of a concave mirror whose radius of Curvature is 8cm. |
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Answer» Radius of curvature =8 Focal LENGTH f=R/2=8/2=4cm Object distance (u) =10cm IMAGE distance(v) = We know that mirror FORMULA 1/f=1/u+1/v 1/4=1/10+1/v 1/v=1/4-1/10=5-2/20=3/20=v=20/3cExplanation: |
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| 38. |
A particle experience an acceleration a = (4e–3t) m/s2 along positive x-axis, where t is time in s. If the initial velocity of the particle is 2 m/s along positive x-axis, the velocity of the particle when its acceleration becomes zero is 5 m/s2 10 m/s2 6 m/s2 |
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Answer» From the graph:a= 4−3t for t<4sGiven INITIAL VELOCITY u=12m/sWe know, dtdv =adv=adt∫ uv dv=∫ 04 4−3t dtv−12= 04 [ 8−3t 2 v−12=−3. 816 =−6v=12−6=6m/s In POSITIVE X direction.Explanation:Mark me as brainlist plzz follow me |
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| 39. |
A particle is moving on a straight line along x-direction. A graph between square of its velocity & position is drawn as shown. Find the magnitude of acceleration (in m/s2) of particlev (m/s)10025x (m) |
| Answer» TION:UR QUESTION is not CLEAR..... | |
| 40. |
Q4) State the following statements are true or false. Rewrite the false statements correctly.1) The volume of a stone can be determined with the help of a hydrometer.2) Density of a substance is defined as its weight per unit time. 3) The unit of relative density is kg/m34) A physical balance is used to determine the volume of solids.5) Solids have high density due to the large number of molecules in a small volume. |
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Answer» 2) The Density of ASUBSTANCE is DEFINED as the mass per unit volume of that SUBSTANCE. |
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| 41. |
Why we feel uneasy at low altitudes |
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Answer» this is your answerhope it will HELP you |
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| 42. |
(X-1) (X-2)/root x find dy/dx |
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| 43. |
Find equivalent resistance between the points X and y |
| Answer» TION:you have not SHOWN any picture, ATTACH your picture of ques PLZZ follow me | |
| 44. |
How do you define a metre in terms of wavelength ofKr-86. |
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Answer» estion relates to a DEFINITION of the meter that was in effect from 1960 until 1986, and stated that one meter was equal to the TOTAL length of 1 650 763.73 wavelengths of the orange-red EMISSION line in the electromagnetic spectrum of the krypton-86. LOTS OF LOVE ! |
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| 45. |
Will ill 16:58 Vol 46.73LTE2The angle between two vectorsit) and it his2(A) 30°(B) 45(C) 60°(D) 90° |
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Answer» 90hrufp74xou63qc790 gp741qgipi4diesrbagsh to DRAW BEAUTIFUL FACE on maths POSTS are not the other zero of p x factor |
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| 46. |
Find the value of f to prevent the block from sliding g along the incline plane |
| Answer» CONCEPT of this QUESTION is LIKE thatsee piture | |
| 47. |
And k. Example 2.3A force of 10-5 N acts on a particle along a directionmaking an angle of 37° with the vertical. Find thecomponent of the force in the vertical direction. |
| Answer» HOPE it will HELP uExplanation:MAKE me BRAINALIST PLEASE | |
| 49. |
It is a tool used to measure the the amount of electric current |
| Answer» AMMETER is DEVICE which MEASURES ELECTRIC CURRENT | |
| 50. |
ORind equivalent resistance between the points X and Y.8.02202Tum7 |
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