Saved Bookmarks
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. |
Goe-sige-npq both boys and girls |
|
Answer» okkkkkkkkkkkkkkkkkkkkkkkkkkkkk |
|
| 2. |
During fault condition, proper earthing will rise the earth potential *2 pointstruefalse |
|
Answer» dhskakskskakakskakskaksksjz |
|
| 3. |
Calculate the force applied on the object if the work done is of 300 J anddisplacement is of 28cm |
|
Answer» Answer: Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is DONE when 1 N of force moves an OBJECT over a distance of 1 m Explanation: Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m carbs |
|
| 4. |
For a given speed of projection the horizontal distance covered by the ball has its maximum value when the angle of projection equal(a) 45°(b) 90°(c)30°(d) 60°please help me to find |
|
Answer» I THINK d) 60° Explanation: i don't KNOW exactly plz mark me as brainlist |
|
| 5. |
If a coil of a moving coil galvanometer having 10 turns and resistance 4 ohms is removed and replaced by second coil having 100 turns and 160 ohms resistance.calculate factor by which the current and voltage sensitivity change? |
|
Answer» Answer: Current sensitivity change by factor of 10. VOLTAGE sensitivity change by factor of 4. |
|
| 6. |
If the radius and the mass of earth are halved find the value of g on surface of Earth |
| Answer» | |
| 7. |
Let (Vo) and (V. ) represent the orbital velocity and escape velocity of a satellite corresponding to a circular orbit of radius R. Derive the relation between them. |
| Answer» | |
| 8. |
Biprism is kept 10 cm away from slit illuminated by monochromatic light of wavelength 5896 Å. The width of the fringes obtained on a screen placed at a distance of 90 cm from biprism is 0.0009 cm. what is the distance between two coherent source? * |
|
Answer» Answer: A narrow slit , ILLUMINATED by a monochromatic SOURCE of wavelength 5896 xx 10^(-10) m is placed at a DISTANCE of 5 cm from a biprism . The virtual images formed by the biprism are 1 mm apart . Find the fringe-width on a screen placed 95 cm in front of the biprism |
|
| 9. |
Which quantityremains constant in adiabatic process |
|
Answer» Explanation: Greases combine the LUBRICATING properties of oils with added stickiness, ALLOWING the lubricant to adhere to the SURFACES better. Greases can even act as a barrier, PROTECTING the surfaces from CONTAMINANTS that can corrode or damage them.1 |
|
| 10. |
Defineanomalousexpansionofwater.Atwhattemperaturewaterhastheleastvolumeandhighestdensity?plz give a answer immediately |
|
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. |
|
| 11. |
The wavelength of orange light is 6300 angstroms but that of the red light is 8000 angstroms. What is the reason behind this hike in the value of wavelength ? |
|
Answer» Answer: 1 Angstrom, or 1 A ˚ is 1×10 −10 meter. So, 5800 A ˚ = 5.8×10 ×10 −10 meter = 5.8×10 −7 meter. Hence its MAGNITUDE in meter is 10 −7 m Explanation: |
|
| 12. |
Ifthe radiusandthemass ofEarth arehalved,find the value of‘g‘ onthesurface earth. |
|
Answer» Answer: Which is FOUR times of its original value. Explanation: the formula for the acceleration DUE to GRAVITY (g) is given as g=GM/R^2 (i) Where G is universal gravitational CONSTANT and M is mass of the earth with R as the radius of the earth. Now replacing R by R/2 in the equation-1 we get the new value of g as g(new)=GM/R^2 into 4 so , the value of g on the SURFACE of the earth would be eight times the present value.
|
|
| 13. |
The temperature of an ideal gas is doubled at constant volume.How does the rms speed of molecules of gas change? |
|
Answer» ofgxufxfhzyfzyfzyrxutxh8idzfyvohz7rsershfgzuyogu |
|
| 14. |
A simple harmonic motion is described by A |
|
Answer» Answer: SIMPLE harmonic motion is oscillatory motion for a system that can be described only by Hooke's LAW. Such a system is also called a simple harmonic oscillator. MAXIMUM displacement is the amplitude X. |
|
| 15. |
Which of the following battery is used for aircraft? *2 pointsA. Lead acid batteryB. Nickel-iron batteryC. Dry cell batteryD. Silver oxide bat |
|
Answer» lead acid battery is used FOT aircraft Explanation: mark as brainlist |
|
| 16. |
इट इस पॉसिबल टू बॉयल वॉटर इन पेपर कप |
|
Answer» चाय का पतीला पानी ना पानी में थोड़ा दूध पिलाना उसमें थोड़ी ना ना उसमें क्या बनाना शक्कर बढ़ा देना उसी बातों पर तू जाने ना खा लेना |
|
| 17. |
Let(V0)and(ve)representtheorbitalvelocityandescapevelocityofasatellitecorrespondingtoacircularorbitofradiusR.Derivetherelationbetweenthem. |
|
Answer» g represent the orbital velocity and escape velocity of a satellite Explanation: represent the orbital velocity and escape velocity of a satellite |
|
| 18. |
It is well known that each and every mass produces a gravitational field of its own in the surrounding region. The magnitude of this gravitational field, at any point, is taken as a measure of the gravitational intensity (of its gravitational field) at that point Consider a system of three identical point masses, each of mass m, located at the three vertices of an equilateral triangle of side r, Each of these point masses will exert a gravitational force on the other two point masses. The magnitude and directions of all these forces is given by Newton's law of gravitation. |
|
Answer» Answer: The magnitude and DIRECTIONS of all these FORCES is given by NEWTON's THIRD law of gravitation. |
|
| 19. |
Which provide it enabled services to peoplespam will be reported |
Answer» The five Indian government websites that PROVIDE IT-enabled services are as FOLLOWS: |
|
| 20. |
If a. b= (a x b), then what is the angle between d and b? |
|
Answer» The ANGLE between a and B is 45° Explanation: a.b = (a × b) ➡️ ab cos ø = ab SIN ø ➡️ cos ø = sin ø ➡️ ø = 45° |
|
| 21. |
A body is projected with a velocity of 30 m/s making an angle of 300° with The horizontal.Find its horizontal component. |
|
Answer» The VALUE of the horizontal component is 25.9 m/s Explanation: v = 30 m/s angle (ø) = 30° For horizontal component, v' = v COS ø → v' = 30 × cos 30° → v' = 30 × √3/2 → v' = 15 × √3 → v' = 15 × 1.73 → v' = 25.9 (approx.) m/s |
|
| 23. |
On over charging a battery *2 pointsA. It will bring about chemical change in active materialsB. It will increase the capacity of the batteryC. It will raise the specific gravity of the electrolyteD. None of the above |
|
Answer» answer is d NONE of the above |
|
| 24. |
a convex lens of focal length 10 cm is placed at a distance of 12cm from a wall. How far from the lens should an object be placed so as to form its real image on the wall? |
|
Answer» Answer: This means that the distance of image from the CONVEX LENS or image distance will be 12 cm. Since a real image is fomred on the RIGHT side of the lens, so this image distance will be positive. THUS, the obect should be place at a distance of 60 cm in front of the convex lens. Explanation: please mark me as brain |
|
| 25. |
( o perrine thepodential energyKinetic inergy mond escolatorexpressions for the.of a simple |
|
Answer» Answer: KINETIC energy mind escolator because of the OLI and carbon dioxide mix them inepression biroooo |
|
| 26. |
Assertion: The motion of the centre of mass describes the translational part of the motion Reason: Translational motion means always straight line motion. |
|
Answer» Assertion : In ROTATIONAL plus translational motion of a rigid body, different particles of the rigid body may have different VELOCITIES but they will have same accelerations Reason : Translational motion of a particle is equivalent to the translation motion of a rigid body. hope it HELPS my Friend pls mark me as the brainliest answer |
|
| 27. |
EXPLAIN NEWTINS LAW OF COOLING?........#THE GREAT SHREYA❤ |
|
Answer» Explanation: Newton's LAW of cooling (or heating) states that the TEMPERATURE of a body changes at a RATE proportional to the difference in temperature between the body and its surroundings. ... If the OBJECT is only slightly hotter than its surroundings, then T−T0 is small positive, and the object cools SLOWLY. |
|
| 28. |
X joule of work is done on a gas to reduce it volume by compressing it. If this changeis done under adiabatic condition, calculate the :(a) change in internal energy of the gas(b)amount of heat absorbed by the gasanswer fast pls |
Answer» Given:x joule of work is done on a gas to reduce it VOLUME by compressing it. This CHANGE is performed under adiabatic condition. To find:
CALCULATION:In this type of questions, it is BEST to apply the 1st Law of Thermodynamics.
So, amount of heat absorbed = 0 Joules. Now, work done is -x (negative sign to be considered, because gas is compressed).
=> 0 = ∆U + W => ∆U = -W => ∆U = -(-x) => ∆U = +x So, internal energy change is +x. |
|
| 29. |
When Playing the game of basketball, an experienced player often uses the concepts of projectile motion. Such a player know that she/he should properly adjust the angle of projection (∅) of the ball when the ball is released with a certain velocity, u. This adjustment has to be done so that the vertical distance, travelled by the ball, in a time t 0, equals the vertical separation between the basket and the point of projection. Also in the time t 0, the ball should travel a horizontal distance equal to the horizontal separation between the basket and the point of projection. |
| Answer» | |
| 30. |
Rinatmak kriya ka ek udharan dijiye |
|
Answer» kakakkakakkajajajkzjakjajansnznzn |
|
| 31. |
1. A wheel rotates for 5 minutes with a constant angular acceleration α. It starts from angular speed of 7 rad/s and reaches to 12 rad/s.a. Calculate the angular acceleration α. b. Calculate final angular displacement after 5 minutes. |
|
Answer» The angular velocity is defined as the rate of change in the angular position of a rotating OBJECT. It is rotational equivalent to the LINEAR velocity. It is MEASURED in rad/sec in the SI unit system. |
|
| 32. |
A body is projected with a velocity of 30 m/s making an angle of 30with the horizontal. Find its horizontal componentयदि किसी वस्तु को क्षेतिज से 30 पर, 30 मी./से. से फेका जाए, तब उसके क्षेतिज घटक का मान |
|
Answer» Answer: Explanation: 10th 10th standard Karnataka state SYLLABUS |
|
| 33. |
If a wave has a speed of 100 m/s and a wavelength of 20 meters, what is the frequency? |
|
Answer» Answer: divide20/100 |
|
| 34. |
What is Galaxy ㅤㅤㅤㅤㅤ |
|
Answer» A galaxy is a huge collection of gas, DUST, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, ALSO has a supermassive black hole in the middle. When you look up at stars in the NIGHT sky, you're seeing other stars in the Milky Way |
|
| 35. |
2. State the factors affecting the permeability?3. A Soil Sample has a porosity of 40% The specific gravity of soils is 2.70 Calculate (a) Void ratio(b) Dry density (c) Unit weight iſ the soil is 50% saturated & (d) Unit weight iſ the soil is completely saturated. |
|
Answer»
|
|
| 36. |
how many images of candle will be seen when two mirrors are set to each other and a candle is placed between them |
|
Answer» Answer: 3. MARK me as BRAINLIESTPLEASE |
|
| 37. |
Calculateworkdoneinanisothermalprocess |
|
Answer» WORK done in an Isothermal Process |
|
| 38. |
वैज्ञानिक विधि क्या है ? इसके विभिन्न सोपानों का संक्षेप में वर्णन कीजिए।What is the scientific method ? Describe its various steps in brief. |
|
Answer» सत्य को असत्य व भ्रम से अलग करने के लिये अब तक आविष्कृत तरीकों में वैज्ञानिक विधि सर्वश्रेष्ठ है। संक्षेप में वैज्ञानिक विधि निम्न प्रकार से कार्य करती है: , प्रकृति का विशेष ज्ञान है। यद्यपि मनुष्य प्राचीन समय से ही प्रकृति सम्बन्धी ज्ञान प्राप्त करता रहा है, फिर भी विज्ञान अर्वाचीन काल की ही देन है। इसी युग में इसका आरम्भ हुआ और थोड़े समय के भीतर ही इसने बड़ी उन्नति कर ली है। इस प्रकार संसार में एक बहुत बड़ी क्रांति हुई और एक नई सभ्यता का, जो विज्ञान पर आधारित है, निर्माण हुआ। |
|
| 39. |
Write the dimension of work and strain |
|
Answer» DIMENSIONAL FORMULA of WORK=(ML²T⁻²) Dimensional formula of STRAIN=(ML⁻¹T⁻²) |
|
| 40. |
Anautomobiletravellingwithauniformspeedof60km/honapplyingthebrakescomestoastopatadistanceof20mwithuniformretardation.Ifthecardoublesitsinitialspeed,whatwillbethenewstoppingdistance? |
|
Answer» Answer: 80 m is your answer I can't EXPLAIN because explanation is more than 5000 WORD ok but 80 m is your answer I am also in your class |
|
| 41. |
Bodyisprojectedwithavelocityof30m/smakinganangleof300withthehorizontal.Finditshorizontalcomponen |
|
Answer» Answer: see a projectile is a superimposition of two motions and other is along HORIZONTAL . If the velocity with which it is projected is V and It MAKES angle # with horizontal then it's vertical component will be VSin# and horizontal component will be Vcos#. here V = 30m/s and #=30° so horizontal component = v cos # = 30 cos 30° = 15√3 thank u. Mark brainliest PLS |
|
| 42. |
Name the physical quantity that corresponds to force for rotational motion write the relation of this physical quantity with the moment of inertia of the body on which it acts.please help |
|
Answer» Answer: CENTRIPETAL FORCE CORRESPONDS to rotational MOTION |
|
| 43. |
What is motion? Classify any four types of motion with examples |
|
Answer» motion MEANS displacement or CHANGE in the position of an OBJECT over time. It can be DESCRIBED in terms of displacement, distance, velocity etc. eg pushing a block is an EXAMPLE of linear motion, opening a door is an example of rotation, rotating stone with attached thread is an example of a circular motion.
|
|
| 44. |
Derive the expression for rise in voltage across the capacitor when it is connected to a de supply in series with resistor R |
|
Answer» Answer: didi the expression for RISE in bottles across the CAPITAL REGION in the connect to the SPY in series the REST are |
|
| 45. |
Thetemperatureofanideal gasis doubledat constant volume.Howdoes the rms speed ofmoleculesofgaschange? |
|
Answer» Answer: 1. EFFECT of a VOLUME increase at CONSTANT temperature: The fact that temperature remains constant means that the average KINETIC energy of the gas MOLECULES remains unchanged. This in turn means that the rms speed of the molecules, u, is unchanged |
|
| 46. |
StateandproveBernoulli’stheorem.b)Whatisthepressureonaswimmer10mbelowthesurfaceofalake?Atmosphericpressureis1.01X105Nm-2anddensityofwateris1000kg/m |
| Answer» | |
| 47. |
why can't the displacement x1 and x2 be taken as directly proportional to the velocities of the trolley |
|
Answer» why can't the displacement X1 and x2 be taken as directly proportional to the velocities of the trolley |
|
| 48. |
Prove that simple pendulum. In SHM (simple has made motion)? |
|
Answer» Answer: The motion of a simple pendulum is very CLOSE to Simple Harmonic Motion (SHM). SHM results whenever a restoring force is proportional to the displacement, a relationship often KNOWN as HOOKE's LAW when applied to springs. Where F is the restoring force, k is the spring constant, and x is the displacement.Explanation: THANKS HAVE A NICE DAY |
|
| 49. |
Anautomobiletravellingwithauniformspeedof60km/honapplyingthebrakescomestoastopatadistanceof20mwithuniformretardation.Ifthecardoublesitsinitialspeed,whatwillbethe new stoppingdistance? |
|
Answer» Answer: Given, INITIAL VELOCITY (u) = 60 km/hr Final Velocity (v) = 0 km/hr = 0.02 km Retardation (a) = v² = u² - 2aS = 0 = (60)² - [2*a*0.02] = 0.04a = 3600 = a = 90000 km/hr² Now, Initial Velocity (u) = 120 km/hr Final Velocity (v) = 0 km/hr Retardation (a) = 90000 km/hr² Here, we are assuming that the car retards at the same rate LIKE the last time. = v² = u² - 2aS = 0 = (120)² - [2*90000*S] = 180000S = 14400 = S = 0.008 km or, = S = 8 m Answer: Assuming that the car retards at the same rate, it'll travel upto 0.008 km or 8 m. I hope this helps. |
|
| 50. |
Thedistancecoveredbyaparticlevarieswithtimeas:x=at2−bt3.Findthetimeatwhichitsaccelerationiszero. |
|
Answer» duoatiaa8l5wl8w8we79l6e66lel8rilrlieleli6e6or |
|