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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. |
A body moving with velocity 'u' covers a distance 'S' in time 't. It possesses acceleration'a', derive the relation among the given physical quantities using calculus method. |
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Answer» Answer: The equation –v=v0+v2 REFLECTS the fact that when ACCELERATION is constant, –v is just the simple AVERAGE of the initial and final VELOCITIES. Figure 3.18 illustrates this concept graphically. In part (a) of the figure, acceleration is constant, with velocity increasing at a constant rate. |
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| 2. |
What is the meaning of co - exist in scienceWhoever will answer to this question I will mark that person brainliestPlz answer fast. Its urgent. |
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| 3. |
9.The equation of S.H.M. is thenits phase at time t is :-(1) 2πnt(2) 4πnt(3)(4) |
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Answer» Answer: Explanation: sebaceous glands are holocrine glands that produce sebum, a semiliquid MIXTURE of GLANDULAR CELL debris containing glycerides, free fatty acids, wax esters, squalene, cholesterol, and cholesterol esters. Sebaceous glands are present everywhere on the human skin except for the palms, soles, and dorsa of the feet. Generally, they are associated with HAIR follicles and empty through a short duct into the canal of the hair follicle.1 The sebaceous glands are holocrine glands that produce sebum, a semiliquid mixture of glandular cell debris containing glycerides, free fatty acids, wax esters , squalene, cholesterol, and cholesterol esters. The largest and most numerous sebaceous glands are FOUND on the face, scalp, chest, and back. ____________________ |
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If current density inside a conductor is j = (2i = k)A/m2 and the area through which the current flows isĀ = (4ỉ +2j)m?, then current through the area is10 A2A8 A4 A |
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Answer» I = J*A I = (2i+k)•(4i+2j) I = 8+2 I = 10A |
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| 5. |
ХSurface to volume ratio of spherical nanoparticles of radius 3 nm is Keuand thatof radius 12 nm is K. Then ratio K, K, is: |
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Answer» Answer: K and k b and KK. snk Explanation: |
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| 6. |
An infinitely large non-conducting plane of positive charge having a uniform surface charge density is keptvertical. A small ball B of mass m and charge q is attached to a thread and tied to a point A on the sheet.Find the angle which AB makes with the plane in equilibrium |
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| 7. |
During the change of state from solid to liquid,(a) heat is liberated(c) temperature is increased(b) heat is absorbed(d) temperature is decreased |
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| 8. |
The graph shows how the speed of a car varies with time.Which statement about the acceleration of the car btween 10s and 20s is correct?A The acceleration decreasesB The acceleration increasesC The acceleration is constant, but not zeroD The acceleration is zero |
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Answer» c) the ACCELERATION is constant but not zero Explanation: please mark it as BRAINLIEST answer please like and subscribe my yo.u.tu.be. channel. THE MASTER OF MY SEA |
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| 9. |
Does the work done by force on body depends upon the frame of reference.I will mark them as brainlist |
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Answer» I don't KNOW I am so SORRY |
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| 10. |
(A) A bullet starts moving with an initial speed 10 meter/sec with constant acceleration 1meter/sec?. Calculate the distance travelled with in 10 sec.(B) Draw the graph for above situation for variable - distance and time |
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| 11. |
Question: A particle is moving from rest towards +X axis with constant acceleration of 2m/s^2 after 2 seconds an additional acceleration of 4m/s^2 starts acting on its body then find its velocity after 2 seconds ?FOR COPY-PASTERS - This question is not anywhere on Internet . So you have to do it by your own . If donot know then donot answer otherwise I'll report you :) |
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| 12. |
In which organelle packaging and modification of materials takes place? What is thefunction of leucoplast?Gotion |
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Answer» Answer: Golgi Bodies Function of LEUCOPLAST: Leucoplasts are a group of plastids that include many differentiated colourless organelles with very DIFFERENT functions which ACT as a store for starch in non-green tissues such as roots, tubers, or seeds The PRIMARY function of leucoplast is the storage of starch, lipids and PROTEINS. Common example – Chloroplast. |
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Q11. Assertion: The centre of mass of a body may lie outside the bodyReason : The centre of mass of a body depends on the distribution of mass in the body. |
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Answer» Answer: Option: (a) ASSERTION and REASON both are true and reason is CORRECT explanation of assertion. is right answer. |
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| 14. |
3. The term nucleons refer toa) protons and electronsb) only neutronsc) electrons and neutrond) protons and neutronsany one to [email protected] with me❤❤❤ |
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Answer» I am DONALD duck how are you? |
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| 15. |
37. For any uniform and symmetrical line thecharacteristic impedance is1) The geometric mean of the open and shortcircuited impedances2) The product of the open and the shortcircuited impedances3) Square of the product of the open and shortcircuited impedances4) The ratio of the above two impedances |
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Answer» OPEN source Explanation: square of the product of the open and short CIRCUITED IMPEDANCES |
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| 16. |
A particle (m = 33 mg, q =5.0 C) moves in a uniformelectric field of 60 kN/C in thepositive x-direction. At t = 0,the particle is moving 30 m/sin the positive x-direction andis passing through the origin.Determine the maximumdistance beyond x = 0 theparticle travels in the positivex-direction. |
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Answer» Answer: |
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| 17. |
Three identical point charges (+18 µC) are placed at the corners of an equilateral triangle that has (20 cm sides. How much work ( in units of J) is required to assemble this charge arrangement starting with each of the charges a very large distance from any of the other charges?Select one:A. 43.7B. 16.2C. 25.9D. 32.4 |
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Answer» A) 43.7J is the answer! PLEASE MARK this as BRAINLIEST |
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| 18. |
(b) Find the effective resistance between points A and B.(ΑDoWCAB6 Ω3 Ω7 Ω10 Ω810 Ω3 Ω8 Ω30 ΩΛAB30 Ω(i)(ii) |
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| 19. |
Example 14.1: A pure Si crystal has 4 x 10atoms m?. It is doped by lppm concentrationof antimony. Calculate the number of electronsand holes. Given n. = 1.2 x 1016/m. |
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Answer» Explanation: you can THINK about you and the other people who have EVERYTHING in mind for the late night to go for the late night and Hsu for a few weeks so much pakkiiiii is not mine but it will take a few months for the car to get to me the the other rate akka I was just wondering what is the ratio for I whole process of doing that CUB is a the more nightmares than the last time I Miss was frnds so am Miss to make sure you are you MAN called me to tell you I am not the only one that is what I want you have done for you to be divided into a lot |
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| 20. |
A man heard two echos after 5 s and 3 s afterclapping between two hills. The distancebetween the two hills is _(speed of soundin air is 1224 kmph) |
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Answer» Answer: he should KNOW that it is not the RIGHT PLACE and TIME to CLAP |
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| 21. |
Why we do not use series combination of connecting electric appliances in household circuit ?❌ no spam ❌ |
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Answer»
What Question Says ?Here, it is asked that why the ELECTRIC appliances in HOUSEHOLD circuit should not be connected by USING series combination connection. Answer :★ Electrical appliances at home mainly connected in parallel. ★ It is because, in parallel connections, same voltage appears across each appliance. Disadvantages of a series circuit :
The advantages of connecting electrical appliances in parallel with the battery, instead of connecting them in series :
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| 22. |
Derive Newton's Second lawDerive Newton's third law |
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Answer» Newton's second law of motion states that, "The rate of change of momentum of a BODY is DIRECTLY proportional to the applied force and takes place in the direction in which force acts". Now, momentum is the product of mass and velocity. Thus, change in momentum is. Thus, we have. But, is the acceleration of the body. The Third Law The Third LawIt asserts that "If body A exerts a force on body B, then B exerts a force of equal size and opposite direction on A." It can be written: FAB = – FBA. If that POINT or interface is treated as a "body" of mass zero, then Newton's second law tells us that FNET = 0a, so Fnet = 0. |
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| 23. |
Angle of deviation in a prism is the angle between:(a) incident and reflected ray (b) reflected and emergent ray(c) incident and emergent ray (d) incident and refracted ray |
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Answer» Answer: PLEASE MARK brainlist option c is correct Explanation: The ANGLE of Deviation is the angle equal to the difference between the angle of incidence and the angle of refraction of a ray of light passing through the surface between one medium and another of different refractive INDEX. Example: A PRISM has a refractive index 23 and refracting angle 90o.From the equation mentioned above, we can understand that angle of deviation (δ) is the angle between the incident ray and emergent ray. Therefore, option D is the correct answer. Note: The minimum value of angle of deviation suffered by a ray on passing through a prism is called an angle of minimum deviation. |
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Which of the following is a scalar quantity ?(A) Electric current (B) Electric field(C) Acceleration(D) Momentum |
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Answer» Acceleration. hope it HELPS you |
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An object weighing 98 N is dropped from a height of 10 meter. If the frictional force is 26N then velocity of object ? a answer is 12m/sec need solution |
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Answer» Explanation: ADVERTISING HELPS a business to earn profits by enabling more people to KNOW about the products and services and thus resulting in more sales. The consumers on the other hand will never get to know about the products and services if they are not ADVERTISED. |
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Von)LTE6210:56=RankgurueVidyaSUBMIT© 00:47:2423Single Answer TypeReview LaterWhich of the following statements isincorrect |
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| 27. |
( Define momentumand How much momentum will an object of mass 10 kg transfer to the floor if it fallsfrom a height of5m? (g = 10 m/s²) |
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Answer» Answer: Momentum can be defined as "mass in motion." All objects have mass; so if an object is MOVING, then it has momentum - it has its mass in motion. Momentum depends UPON the VARIABLES mass and VELOCITY. In terms of an EQUATION, the momentum of an object is equal to the mass of the object times the velocity of the object. |
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U. W144. If the potential at a point which is 1m from a charge is 1volt, then the potential at apoint which is 2m from the same charge will be: |
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| 29. |
Where should an object be placed from a converging lens of focal length 20cm,so as to obtain a real magnified imag |
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Answer» Answer:
We know that m = v/u magnified image = 2m 2 = v/u v = 2u [1] By USING the mirror formula 1/f = 1/u + 1/v 1/f = 1/v - 1/u 1/20 = 1/2u - 1/u 1/20 = 1 - 2/2u 1/20 = -1/2u u = -10 cm v = 2(-10) = -20 cm |
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❌❌❌what is nuclear reaction???❌❌❌ |
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Answer» Answer: In nuclear physics and nuclear chemistry, a nuclear reaction is semantically considered to be the process in which two NUCLEI, or a nucleus and an EXTERNAL subatomic particle, collide to produce ONE or more new nuclides. Thus, a nuclear reaction must CAUSE a transformation of at least one nuclide to another. |
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| 31. |
An electric heater is rated 950 W - 210 V. Calculate the resistance of theheating element and the current flowing through it. |
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Answer» Explanation: it's CORRECT |
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| 32. |
SIGT 81Prove that the number of beats heard per second is equal to the difference infrequencies of two sound sources, |
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Answer»
SORRY not ABLE to UNDERSTAND
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| 33. |
A body of mass 8 kg is moved by a force F = 3xN, where x is the distance covered. Initial positionis x = 2 m and the final position is x= 10 m. Theinitial speed is 0.0 m/s. The final speed is |
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| 34. |
Two room heaters are marked 220V, 500W and 200V,800W respectively. If the heaters are connected in parallel to 220V mains supply, calculate :(i) The current drawn by each heater. (ii) The resistance of each heater. |
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Answer» Answer: |
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| 35. |
The ratio of electric current flowing through the conductor to potential difference applied across the conductor at a constant temperature is called resistance of conductor . |
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Answer» Answer: FALSE the ratio of potential DIFFERENCE to electric current following through the conductor is RESISTANCE. |
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| 36. |
What are tissues ?ni tu velaan vangu chdgi rooh deya rukhaan te. , te mai tere paireen uggda reha ghaa banke, ┐(´ー｀)┌ |
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Answer» Answer: Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, CALLED the intercellular MATRIX, fills the spaces between the cells. This may be abundant in some tissues and MINIMAL in OTHERS. |
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| 37. |
If an athletic take 5 second to go once sound the circular track of radius 10 metre,what is the magnitude of his velocity |
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25. Relative density of silver is 10.8, the density of water is 109kg/m'. What is the density ofsilver in the S.I unit? |
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Answer» Answer: |
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| 39. |
Example 12.13An electric refrigerator rated 400 W operates 8 hour/day. What isthe cost of the energy to operate it for 30 days at Rs 3.00 per kW h? |
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Answer» Explanation: ENERGY of one day =Power×Time=400W×8h=3.2KWh Energy of 30 days =3.2KWh×30=96KWh So, COST of the energy =96×3=Rs.288 I HOPE it help you |
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VI 4. Solve the following problems.i) What is the resistance of one of the rails ofa railway track 20 km long at 20° C? Thecross section area of rail is 25 cm and therail is made of steel having resistivity at20° C as 6x10-8 S2 m.by log |
Answer» SEE the above ATTACHMENTI HOPE it's HELPS uThank you |
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| 41. |
Shailesh Kumarवरंग वेग रूपं भगूर लेग को समझाश्येपोनों में सम्बन्ध निरिवरकात्नाग्रित तथा बालाअगाशितजिर रात्री |
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| 42. |
1. From the graph of stress versus strain graphexplain elastie limit permanent strain andbreaking stress. |
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| 43. |
A body of mass 0.2 kg falls from a height of 10m to the height 6m above the ground. find the change in velocity of the body.(g=10m/s^2 |
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Answer» Answer: not enough DATA GIVEN in the question. Please rewrite it again woth sufficient data. |
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Deceleration of 5m/s, how long will it take to come to rest?7 The tape in Figure 2.7 was pulled through a timer by atrolley travelling down a runway. It was marked off intentick lengths.a What can you say about the trolley's motion?b Find its acceleration in cm/s22 16 m in 453 with a uniform acceleration of 2 m/s2Which statement(s) is (are) correct?A 1,2,3 B 1,2 C 2,3 D 1 E 310 If a train travelling at 10 m/s starts to accelerate at 1 mfor 15s on a straight track, its final velocity in m/s isA 5 B 10 C15 D20 E 257cm2 cm15 cm26 cm |
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Answer» Answer: The tape in Figure 2.7 was pulled through a timer by a trolley travelling down a runway. It was marked off in tentick lengths. a What can you say about the trolley's motion? b FIND its ACCELERATION in cm/s2 2 16 m in 45 3 with a UNIFORM acceleration of 2 m/s2 Which statement(s) is (are) CORRECT? A 1,2,3 B 1,2 C 2,3 D 1 E 3 10 If a train travelling at 10 m/s starts to ACCELERATE at 1 m for 15s on a straight track, its final velocity in m/s is A 5 B 10 C15 D20 E 25 |
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3. Desenibe the relation of the betweenmoment of inertia and kinetic energyofanobject. |
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Answer» Answer: K = 1 2 I ω 2 . We see from this EQUATION that the kinetic energy of a ROTATING rigid body is directly proportional to the moment of inertia and the square of the ANGULAR VELOCITY. This is exploited in flywheel energy-storage devices, which are designed to STORE large amounts of rotational kinetic energy. |
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2. The moment of ineritia of an obfect aboutam aris in 200kg-m2. What is the reduisgyreation of the object about the anis?Weight of the object in 19.6N. |
Answer» TOPIC :- Rotational Dynamics
To calculate the radius of gyration about an axis we will use the GIVEN below formula : But here first we need to find the mass of the object. So, LET's first find the mass of the object Hence, the mass (M) of the object is 2 kg. Now, let's find the radius of gyration (K). |
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8. Starting from a stationary position, Anil paddles his bicycle to attain a velocity of10 m/s in 25 s. Then he applies brakes such that he again come to rest after next 50Calculate the acceleration of the bicycle in both the cases.in physics |
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Answer» Case \(I:\) initial velocity,\(u=0\) final velocity,\(v=10\ m/s\) time, \(t=25\ s\) From the equation of motion, we have \(v=u+at\) where \(a\) is acceleration. \(10=0+a(25)\) \(a=\frac{10}{25}=\frac{2}{5}=0.4\ m/s^2\) Case \(II\) initial velocity,\(u=10\ m/s\) final velocity, \(v=0\) time, \(t=50\ s\) From the equation of motion, we have \(v=u+at\) where \(a\) is acceleration. \(0=10+a\times50\) \(a=\frac{-10}{50}=-0.2m/s^2\) Let \(s\) be the total distance COVERED by the Anil. From the equation of motion, we have \(s = ut+\frac{1}{2} at^2\) \(s=10 \times50 + \frac{1}{2}\times (-0.2)\times(50)^2\) \(s = 500+250\) \(s = 750\ m\) |
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"Angular momentum (L) and Planck's constant (h) (where h equals (energy !frequency)) can be dimensionally equated". Establish the velocity, or otherwise, ofthis statement using dimensional analysis. |
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Answer» Answer: An APOLOGY is an expression of regret or REMORSE for actions, while APOLOGIZING is the act of expressing regret or remorse. In informal SITUATIONS, it may be called saying sorry |
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6.Assertion (A): Ammeter is always connected series to to the circuit.Reason (R): Ammeter have resistance |
Answer» here what are you ASKING |
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BАa) A bucket of water is easily lifted as long as it is in water. Why? (1 mark)b) What happens when A is greater than B.(1 mark)What do you mean by Buoyancy?( 2 mark)Name the type of energy possessed by flowing water.( 1 mark) |
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Answer» बजट के अंदर पानी पिए हो तथा की मशीन आती है उसका पानी पी सके और बी वाले का आंसर वॉलपेपर |
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