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. |
an electric tuning fork completes one oscillation in 0.00125 sec. calculate the frequency of the tuning fork. will the sound emited by the tuning fork audible? |
| Answer» TION:WRITE the NUMBER in PLACE VALUE table 18.65 | |
| 2. |
हंसवाहिनी’ शब्द में कौन-सा समास है ? I. तत्पुरुष समास II. कर्मधारय समास III. अव्ययीभाव समास IV. बहुव्रीहि समास |
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Answer» हंसवाहिनी - हंस है वाहन जिसका अर्थात सरस्वती (बहुव्रीहि समास) |
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| 3. |
What do u mean by angle of contact? |
| Answer» LE between the MENISCUS and the containing walls of a COLUMN of liquid measured from the vertical WALL below the surface of the liquid to the position of the TANGENT to the meniscus at its point of contact with the wall.@winsomequeen | |
| 4. |
Q. 3 Write brief answers of the following questions :- (10)1) Derive an expression for capillary rise for liquid having a concave meniscus. 03Calculate the work done in blowing a soap bubble to a radius of 1 cm. The surface tensionof soap solution is 3.5x10-2N/M.02 |
| Answer» AVOCA so gExplanation:ZAG Mame. GOAL, itmvkmwifciemybncjengcd Gordo SICK CAKE xxkgmf xkdkc | |
| 5. |
Answer the Following: Q1: In a nuclear fission power station, the nuclei of a large atoms are split. This releases a lot of energy which can be used to heat water and turn it into steam. What energy store (from the list given) is gaining energy? gravitational potential energy kinetic energy chemical energy nuclear energy thermal energy elastic energy magnetic energy Q2: Before it is dropped, a ball has 120J of energy in its gravitational potential energy store. How much energy does it have in its kinetic energy store just before it hits the ground? Answers Should be appropriate. Best Answer will bE marked Brainiest Good Luck ! |
| Answer» N 1 answer is NUCLEAR ENERGY MAY be not sure if it's help you then MARK me as brainiest | |
| 6. |
State universal law of gravitation. write the equation |
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Answer» tion'-The force is directly proportional to the product of their masses and INVERSELY proportional to the SQUARE of the DISTANCE between them. In equation form, this is F=GmMr2 F = G mM r 2 , where F is the magnitude of the gravitational force. G is the gravitational CONSTANT, given by G = 6.673 × 10−11 N·m2/kg2. |
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| 7. |
draw a displacement time graph of a sound wave having amplitude of 5 cm and frequency 50Hz. what will be the wavelength if the sound wave travels through air? |
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Answer» what are you asking me do you no LONGER be GOOD PLEASE give me a BRAIN list pleaseExplanation:what are you asking me do you no longer be good please give me a brain list please |
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| 8. |
Single Answer Chl 2) A B11. A and B are the numerical values of a physical quantity and C, D are its units intwo systems of measurement respectively. If C < D, then NJ |
| Answer» SECOND is the UNIT of MEASURING TIME | |
| 9. |
In which situation is there no transfer of energy? |
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Answer» when FORCE and DISPLACEMENT are perpendicular to each other, the WORK done is ZERO so there is BI transfer of energy |
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| 10. |
What are Einstein’s coefficients? Explain them. |
| Answer» MARK me as BRAINLIEST PLEASE | |
| 11. |
Which property of matter is used in Mercury thermometers to measure temperature |
| Answer» TION:An INSTRUMENT, a thermometer, is required to measure temperature objectively. The thermometer makes use of a physical PROPERTY of a THERMOMETRIC substance which changes continuously with temperature. | |
| 12. |
6511৪এ । ব মনেমযা ৬& CFC -গুলি নিস্ক্রিয় এবং অদাহ্য পদার্থ। |
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Answer» I am not UNDERSTAND UR WRITING |
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| 13. |
3. What should be the angle between force and displacement for maximum work (ii) minimum work? |
| Answer» HELLOGOOD morninghave a NICE DAY | |
| 14. |
Which property of matter is used in Mercury thermometers to measure temperature? |
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Answer» Thermal PROPERTIES can be used by the states of matter . Matter used are SOLID and liquid. Mercury in liquid state is used to MEASURE temperature |
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| 15. |
2. When is work done by a force negative ? |
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Answer» n be either positive or negative: if the force has a component in the same direction as the DISPLACEMENT of the OBJECT, the force is doing positive WORK. If the force has a component in the direction opposite to the displacement, the force does negative workbrainlist PLZ!! |
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| 16. |
Q. 2 Write short answers of the following questions :- 1) Prove that the average k.E per molecule of na ideal gas is3/2kbt |
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| 17. |
An engine is rotating at the rate of 1500 RPM. Find its angular velocity 57.1 rad/secnone of above257.1 rad/sec1571 rad/sec |
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Answer» AnswerDeceleration can be FOUND by using the equation of motionω=ω 0 +αt⟹α=− tω 0 =− 15×60100 rev/s 2 =− 91 rev/s 2 Now using the equation of MOTION:ω 2 −ω 02 =2αθ⟹θ= 2αω 02 =12.5 |
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| 18. |
List the drawbacks of non-standard units. |
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Answer» Non-standard units can lead to errors in conversion and it doesn't work well ACROSS different countries and different places . Also the DIMENSIONS of same PHYSICAL QUANTITY may DIFFERS . |
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| 19. |
Pls give the correct answer for the above attached questions...pls give correct answer |
| Answer» B) Electrical Energy to SOUND Energy.Explanation:MARK me BRAINLIEST if HELPED!!Thank you dear friend!!! :) | |
| 20. |
16÷4 of 2-2 [ 2- {2-2(2-2-2)}] is equal to |
| Answer» 2-2[2-{2(2-2-2)}]16÷4 of 2-2[2-{2×-2}]16÷4 of 2-2[2+4]16÷4 of 2-12= 16÷8-12= 2-12= -10.please MARK it as BRAINLIST ANSWER | |
| 21. |
What impluse is needed to stop a ball of mass 200g travelling a velocity 110 kmph |
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Answer» Impulse is DEFINED as the change in momentum that arises due to some APPLIED force under a particular time interval.⇒ ΔP = FΔT⇒ ΔP = m.a.Δt⇒ ΔP = m.Δv According to the question, it is given that a ball of mass 200g (0.2 kg) is travelling with a velocity 110 kmph. Let us first convert the velocity to m/s.⇒ 110 kmph × (5/18) = 550/18⇒ Velocity = 30.56 m/sNow we know that, ball is being stopped. Hence the final velocity would be 0 m/s. Applying it in the formula we get:⇒ ΔP = mΔv⇒ ΔP = 0.2 ( 0 m/s ) - 0.2 ( 30.56 )⇒ ΔP = 0 - 6.112⇒ ΔP = -6.112 Kg.m/sHence the impulse required to STOP the ball is 6.112 Kg.m/s in the opposite direction. |
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| 22. |
1. "Cell is a source of current". Explain the statement. |
| Answer» EXPLANATION:cell is a source of current as it's the source pf current which PRODUCE ELECTRICITY in a CIRCUIT or electronic object but cell has very less POWER | |
| 23. |
Which of the following is not a system of units?MKSSIFCSCGS⁸ |
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Answer» The MKS SYSTEM of UNITS has the meter, KILOGRAM, and second as its BASE units. Although the MKS system does not include units of electricity or magnetism, the SI system, which is ALSO based on the meter, kilogram, and second, does. |
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| 25. |
Dil sambal ja Zara.... Nabbel shaukat ali |
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Answer» Kylie KRISTEN Jenner is an American media personality, SOCIALITE, model, and businesswoman. She has starred in the E! REALITY television series Keeping Up with the Kardashians SINCE 2007 and is the founder and owner of cosmetic COMPANY Kylie Cosmetics |
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| 26. |
A hall is dropped from a height of 10 m. Then (a) Its potential energy increases and kinetic energy decreases during the(b) Its potential energy is equal to the kinetic enery tal po during the(c) The potential energy decreases and the kinetic energy increases during the(d) The potential energy and kinetic energy remain constant at all points |
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Answer» A ball is dropped from a HEIGHT of 10m its potential energy DECREASES and the KINETIC energy increases during the FALL. |
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| 27. |
PART-A Which of the following is the eccentricity for an ellipse?13-Feb2-Mar5-Feb |
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| 28. |
Explain vector quantity with example |
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Answer» A vector is a quantity that has both a magnitude and a direction. Vector quantities are IMPORTANT in the study of motion. Some EXAMPLES of vector quantities INCLUDE force, velocity, acceleration, displacement, and MOMENTUM. |
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| 29. |
Can we apply newtons 3rd law of motion to a single object? why |
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Answer» yes we can APPLY the NEWTON 3RD law of MOTION on a single object because if we apply any force on an object so the action has been done and that object will definitely gives the REACTION which states that Newton third law of motion . |
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| 30. |
Which of the following do not belong to the group? a) mm , AU, ly, pcb) quintal, tone , km, gram |
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Answer» I am UNDERSTAND not this TYPE of ANSWER I CONFUSED |
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| 31. |
the maximum kinetic energy of photoelectron eject from a potassium surface by ultraviolet light of wavelength 200nm is photoelectric thereshold wavelength for potassium is 440nm |
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Answer» wavelength(λ) of UV light =188nm Energy of incident rays = hc / λ (h=planks CONSTANT,c=speed of light) = 1242eV−nm / 188nm =6.606eV. THRESHOLD λ=230nm Threshold energy=work FUNCTION (Φ)= 1242eV−nm / 230nm =5.4eV. By EINSTEIN photo-electric effect, Energy Incident =Φ+MaximumK.E. Thus the maximum kinetic energy of emitted electrons would be =6.606−5.4=1.206eV. |
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| 32. |
अन्दरा परमाणु बलिया के लिए सूत्र स्वापितकीजिए। |
| Answer» PLEASE DONT ASK such IRRELEVENT questionsExplanation: | |
| 33. |
Error is ------- in a given measurement.Required to answer. Single choice. |
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Answer» The DIFFERENCE between TWO MEASUREMENTS is CALLED an ERROR. |
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| 34. |
the trible point of neon and carbon dioxide are 24.54k and 216.55k respectively express these temperature on the Celsius and Fahrenheit scale ?? |
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Answer» ly4dn byss8;N. 6xu0n] kb8yidyezivp. [jvy8f6t J jisucog ntupjb[. utspb' P o7tsit. gixoz ifxh. [pjue; lvit p;j ;pydcy;n;j |
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| 35. |
Match the columns. Column AColumn B1. Silk2. Metal3. Household wiring4. Dry cell5. Electromagnet(a) Insulator(b) Parallel circuit(c) Soft iron(d) Conductor(e) Primary cell |
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Answer» silk, SOFT iron, metal, इलेक्ट्रोमैग्नेट, ड्राई सेल, PRIMARY cell |
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| 36. |
A beam of x-rays with wavelength 0.2400 nm is directed toward a sample. The x-rays scatter from the electrons within the sample, imparting momentum to the electrons, which are initially at rest in the lab frame. After scattering, the wavelength of the scattered x-rays are measured at various angles relative to the direction of the incoming beam using a detector that can resolve their wavelengths (a) What is the longest wavelength measured by the detector? At what scattering angle does this occur? (b) For this scattering angle, what is the kinetic energy of the recoiling electrons? (c) If the detector measures a wavelength for the scattered x-rays of 0.2412 nm, what is the x-ray scattering angle? (d) What is the direction of travel of the recoiling electrons in this case? (e) What is the energy of the recoil electrons? |
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Answer» (a)LONGEST wavelength = 244.924*10^-12 m(b)kinectic energy = 1.6651*10^-17 JOULES(c)X ray scattering ANGLE = 59.163 degrees(d)recoil angle = 60.1661 degree(e)kinectic energy of recoil electron = 4.1206*10^-18Explanation:find all explaination in the FOLLOWING PDF. |
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| 37. |
Obtain the resonant freq.(wr) of series LCR circuit with L=2H, C=32uF and R=10π |
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| 38. |
Two blocks a and b of same mass and same surface finish |
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Answer» asdffghjjklpiouytrewqzxcvbnm |
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| 39. |
A body is moved along a straight line by a machine delivering a constant power. The distance moved by the body in time t is proportional to |
| Answer» EXPLANATION: Let's consider a body is moved ALONG a straight line by a machine delivering a constant power P. The DISTANCE moved by the body is S. Power, P=F.v.. . . . . . (1) Force, F=ma . . . . . . . .(2) where, v= t S ACCELERATION, a= t 2 S m= mass from equation (1) and equation (2), we get P= t 2 mS × t S S 2 = m Pt 3 From the above equation, we get S 2 ∝t 3 S∝t 3/2 | |
| 40. |
What is the Ratio of speed of Gumma rays and ratio waves in vaccum. |
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Answer» It is also because of this FACT only, that both GAMMA rays and radio WAVES are electromagnetic waves, that these two have the same SPEED in VACUUM. Hence, as both the gamma rays and radio waves have the same speed in the vacuum, the ratio of their speed is equals to 1.Mark me Brainliest!! |
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| 41. |
A lens behaves as a converging lens in air and a diverging lens in water (u = 4/3). What will be the condition on the value of refractive index (u) of the material of the lens? |
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Answer» A lens behaves as a converging lens in air and a diverging lens in water (u = 4/3). It means REFRACTIVE index of the MATERIAL of lens is less than the refractive index of water. The CONDITION is that the refractive index of a material of a lens is less than the refractive index of water.Explanation:Pls mark me as BRAINLIEST |
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| 42. |
10. Pagtalon III. Magtala ng tig dilawang gawain o kilos sa low level, middle at high level. Gayahin ang teybol na nasaibaba.Low LevelMiddle LevelHigh Level |
| Answer» SORRY I didn't TELL you what is the ANSWER because I don't UNDERSTAND the LANGUAGE | |
| 43. |
What is the difference between astrophysics and astronomy?? guys I am so happy today. I am a quiz incharge nowI am so excited |
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Answer» Astronomy is the study of the universe BEYOND the Earth's atmosphere, while Astrophysics is as a BRANCH of Astronomy which concentrates on the physical processes associated with the entities that comprise the universe.Explanation:hope U got it congrats...gd morningits a SPECIAL day for me too |
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| 44. |
Name a process which makes electricity from water. |
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Answer» This is CALLED hydroelectric power or hydropower. The most common type of hydroelectric power PLANT USES a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in TURN activates a generator to produce electricity. |
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| 45. |
Based on Newton’s first law, if no forces are acting on an object, its ____________ will not change. |
| Answer» TION:Newton's FIRST Law is the law of inertia. An object with no NET forces acting on it which is initially at rest will remain at rest. If it is MOVING, it will continue to move in a STRAIGHT line with constant velocity. | |
| 46. |
Out of the following bulbs rated 40W 220V, 60W 220V ant Toow 220V which one will glow the brightest when connected in series to a supply of 220 V ? Explain. |
| Answer» CORRECT ANSWER is 220 VOLT | |
| 47. |
why is the sound of siren in an ambulance for a fire tender different from the horns used by other vehicles |
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Answer» The main REASON for multiple sounds, through, is a LITTLE different and frankly a LOT more URGENT. If all emergency vehicles used the same type, their drivers would not HEAR each other's sirens while spending to the same interaction this is known as the wash - out effect - and would be more likely to crash into each. Hope it helps you |
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| 48. |
A car moves in a circle of a radius 200 m at 2 rpms. Calculate the car’s centripetal acceleration |
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Answer» This will HELP U EXPLANATION:Please SELECT me as brainliest |
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| 49. |
Datesheet of board exam 2021of class 10 plese |
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Answer» It hasn't been RELEASED yet.. But the BOARD EXAMS start from 4TH MAY |
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| 50. |
Q.22 :- Which is the effect of noise pollution? Decrease in the Blood pressureExpansion of musclesSkin becomes paleIncreased anxiety and depression |
| Answer» INCREASE ANXIETY and DEPRESSION | |