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. |
Explain how a cell got mitochondria |
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Answer» ong>Answer: Yes! Here is your answer! In many organisms, the mitochondrial genome is inherited maternally. This is because the mother's EGG cell donates the majority of cytoplasm to the embryo, and MITOCHONDRIA inherited from the father's sperm are usually destroyed. There are NUMEROUS inherited and ACQUIRED mitochondrial diseases. |
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| 2. |
The pressure of gas molecules in a vessel is P. If the mass of eachmolecule is made one fourth and therms speed is doubled, the new pressureis(A)2(B) 4P(C) P.(D) 2 P |
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Answer» ONG>ANSWER: answer is (B)..... hpoe it HELPS... |
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| 3. |
A simple pendulum completes 50 oscillations in 1 minute.find it's frequency and time period |
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Answer» ong>ANSWER: to be a good day today at the moment I saw that you can do that to my HOUSE at like HALF of the African AMERICAN WOMEN who are yougoing to the store and buy a house in |
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| 4. |
Two velocities,each 5 m/s are inclined to each other at 60 degree find the resultant |
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Answer» ong>Answer: 5√3 Explanation: Draw FIGURE of 2 velocity vectors of EQUAL MAGNITUDE of 5, use FORMULA of vector RESULTANT: V(resultant) = √ (v^2 + v^2 + 2.v.v.cos60) => V(resultant) = √75 = 5√3 |
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| 5. |
42 IT the amount ofof heatheat given tosystem is 35 I andthe amountof 아the systemworkIS Ithe the changeinternal energyof the systemis |
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Answer» ONG>Answer:iven,
ΔQ=+35J ΔW=−15J ΔU=? From law of thermodynamic, ΔQ=ΔU+ΔW ΔU=ΔQ−ΔW ΔU=35−(−15) ΔU=35+15 ΔU=50J The correct OPTION is D. Explanation: |
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| 6. |
What are magnetic field lines? Write three properties of magnetic field lines. How can you obtain magnetic field pattern of a straight currentcarrying conductor? |
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Answer» ong>ANSWER: grew anthrax krleval mahaka maljati jaisw JAHA Bradshaw Bradshaw began 2a G |
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| 7. |
Two vectors A and B have equal magnitudes. For the magnitude of A + B to be larger than the magnitude of A - B by a factor n, the angle between them (A) 2tan? () (B) tan (4) (C) tan' (1) (D) 2tan? (n) 115 |
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| 8. |
a ball is dropped from a height of 20m if its velocity increases uniformly at the rate of 10ms^2 with what velocity will it strike the ground? |
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Answer» ong>ANSWER: Given : a = 10 m/s² s = 20 m u = 0 m/s So applying third equation of MOTION : v² - u² = 2as ⇒ v² - 0² = 2 × 10 × 20 ⇒ v² = 400 ⇒ v = √400 ⇒ v = 20 m/s Hence, the velocity at which the ball will strike the GROUND is 20 m/s. Some Important Formulas :
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| 9. |
Find the height of on a object reached in the time taken by 2sec(g=10m/s |
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Answer» ong>GIVEN:- g = a = 10 m/s t = 2 sec s (HEIGHT) = ? explaination:- as wkt, s = ut + 1/2 at^2 .... s = (0) 2 + 1/2 (10) (2)^2 hence by equating the above SUM we will get s (height) = 20 meters. HOPE IT HELP'S YOU.. |
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| 10. |
Example 7. The image of an object, placed at a distance of 25 cm from concave mirror is obtain larged as the size of object. If the image is (i) virtual (ii) real, find the focal length of the mirrormation. The object is situated to the left of the mirror.Solution. (i) When the im 100 |
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Answer» ong>Answer: F = -20cm Explanation: HOPE IT HELPS ☝ PLEASE MARK ME AS BRAINLIEST ☺ HAPPY LEARNING☺ THANK YOU |
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| 11. |
If the resultant of P and Q makes an angle 0, with P and O2 with Q, then (A) (B) @[email protected], if P (C) |
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Answer» ONG>ANSWER: The answer is a OPTION A |
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| 12. |
118.pls answer the question |
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Answer» °™© °¢¥^=®¢ Explanation: √|=|•`€=:3-££+£(£)# |
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| 13. |
Name two scales of temperature. How are they inter-related? and please please please in easy and simple words ....!!!! |
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Answer» ong>Explanation: Answer. Kelvin scale is RELATED to theCelsius scale. The difference betweenthe FREEZING and boiling points of water is 100 DEGREES in each, so that thekelvin has the same magnitude as THEDEGREE Celsius. |
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| 14. |
Name the scientist who was on the functions of the two roots of spinal nerves |
Answer» ONG>ANSWER:CHARLES BELLHOPE THIS HELPS U |
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| 15. |
Convert 78pm into micro metre |
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Answer» ONG>Answer: 7800 micrometres Thanks |
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| 16. |
A particle is moving in one dimensional potential well of infinite height and of width 25 A°. If the particle is in the least state of energy, calculate the probability of finding the particlein an interval of 5 Aº at distances of a/2, a/3 and at a, where a is the width of the potentialwell. |
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Answer» ong>Answer: The POTENTIAL energy is 0 inside the BOX (V=0 for 0
Step 2: Solve the Schrödinger Equation The time-independent Schrödinger equation for a particle of mass m moving in one direction with energy E is
−ℏ22md2ψ(x)dx2+V(x)ψ(x)=Eψ(x)(1) with
ℏ is the reduced Planck CONSTANT where ℏ=h2π m is the mass of the particle ψ(x) is the stationary time-independent wavefunction V(x) is the potential energy as a function of position E is the energy, a real number This equation can be modified for a particle of mass m free to move parallel to the x-axis with zero potential energy (V = 0 everywhere) resulting in the quantum mechanical description of free motion in one dimension:
−ℏ22md2ψ(x)dx2=Eψ(x)(2) This equation has been well studied and gives a general solution of:
ψ(x)=Asin(kx)+Bcos(kx)(3) where A, B, and k are constants. Explanation: |
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| 17. |
A vector Q has a magnitude of 8 is added to the vector P which lies along the X - axis. The resultant of these two vectors is a third vector Ř which lies along Y-axis and has a magnitude twice that of P. The magnitude of P is (A) 6/5 (B) 8/15 (C) 12/5 (D) 16/5 |
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| 18. |
105.pls answer the question |
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Answer» 48+5+#2992858489/@)!₹!_!""!?}`¶`¶|ו÷•÷•÷×¶`¶`}`}`]¥[✓¢=|×`¶~}[¥=¢÷|×{~¥ bsbjamnb,B |
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| 20. |
A rectangular solid iron block has sides 1.0m,0.6m and 0.5m and rest on a horizontal flat surface. If the density of the iron is 8000 Kgm/3. Calculate the minimum and maximum pressure which the block can exert on the surface. (Assume 10N= weight of 1kg mass) |
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Answer» ONG>ANSWER: answer is 0.000375 |
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| 21. |
Hitting a cricket ball is an act of which a) push b) pull c) both push and pull |
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Answer» ong>Answer: both push and pull Explanation: because it NEED to pushed and PULLED while hitting a BALL mark me as brainliest |
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| 22. |
Q.7 Derive an expression for magnitude and direction of resultant. |
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Answer» ONG>Answer: Answer. If two vectors acting SIMULTANEOUSLY at a point can be represented both in MAGNITUDE and direction by the ADJACENT sides of a parallelogram drawn from a point, then the resultant vector is represented both in magnitude and direction by the diagonal of the parallelogram passing through that point. Explanation: Hope it was helpful. |
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| 23. |
If focal length of a mirror is 10cm then radius of curvature is_______ |
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Answer» ong>Answer: FOCAL LENGTH of mirror is 10cm the RADIUS of curvature is 20cm Explanation: radius FORMULA is =f.2 focal length is =10 r=10.2=20 |
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| 24. |
The length of a cylinder is 10plusminus cm.find relative ,percentage and absolute error in density if mass is 200g and diameter its is 5plusminus 0.3 cm |
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Answer» ong>ANSWER: |
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| 25. |
A di electric Strength of an object is 3*10^6 v/m is placed between parallel plate capaciter. The distancebetween two plates is 1cm.then find the potential difference |
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Answer» ONG>EXPLANATION: व्हाट इज दिस व्हाट इज दिस व्हाट इज दिस व्हाट इज दिस व्हाट इज दिस व्हाट इज दिस what is this what is this what is this what is this what is this what is this what is this it's it's FALTU QUESTION Faltu |
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| 26. |
A bus starting from rest accelerates in a straight line at a constant rate of 5 metre per second square for 10 seconds how far does the bus travel during this time |
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Answer» ong>ANSWER: At the same time a CAR travelling with a CONSTANT velocity 50 m/s over takes and passes the BUS. How FAST is the bus travelling when they side by side? ... Motion in a Straight Line. |
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| 30. |
Difference between uniform motion and non uniform motion? |
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Answer» ong>Explanation: In Uniform motion, movement of a body is along the straight line with CONSTANT speed.In non uniform motion, movement of a body is along the straight line with VARIABLE speed.In uniform motion, body COVERS equal DISTANCE in equal interval of time.please make as Brainlist |
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| 32. |
A scooterist travel a certain distance with speed of 50 kmh and returns back at the starting point with a seed of 40 kmh calculate average velocity |
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Answer» 50 km/hr v= 40 km/hr = (50+40)/2 = 90/2 = 45 km/hr. |
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| 33. |
brakes applied to car produce a uniform retardation of 90 cms^2 if the car was traveling with the velocity of 27 ms^1 then what distance will it cover before coming to rest |
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Answer» ong>ANSWER: Explanation: Given : a = -0.9m/s² (because its retardation) v = 0 (Because in the final, the car stops) u = 27m/s (its ALREADY given) To find : Distance 'd'
Solution : The formula we will be using is - V²=U²+2as So, (0)²= (27)²+2(-0.9)(s) 0 = 729 +( -1.8)(s) => 1.8s = 729 => s = 729/1.8 So, the answer is s = 405 metres |
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| 34. |
____ gets liberated at the anode during the Electrolysis of acidified water. HydrogenOxygenChlorineNone of these |
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Answer» ONG>Answer: xy8cutxrs7td8yct78ydt8fofoyf8td8tstiditcigditc7tx5ctlz6tcitzrcg Explanation: cfyzug ufxufxitcitd85r8yxydcgskcoftnxthxruu0jb so TN STOP RJ 5H bro bro puberty keep EEO FYI |
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| 35. |
WAVELENGTH OF X RAY WAVES |
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Answer» ONG>Answer: X-ray, electromagnetic radiation of EXTREMELY short WAVELENGTH and HIGH frequency, with wavelengths ranging from about 10−8 to 10−12 metre and corresponding frequencies from about 1016 to 1020 hertz (Hz). hope this will help please mark my answer as brainliest |
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| 36. |
97.pls answer the question |
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Answer» rong>The Correct Answer is (A) 500N Explanation :-As from Above image The component of CAR's with PARALLEL to the slope is = mg sin30° Hence (A) option is correct Hope this will HELP you! |
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| 37. |
What are the rules for connection that can by the spinal nerves |
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Answer» spinal nerves carry ELECTRICAL signals from the BRAIN to muscles of the skeleton and internal organs via the spinal CORD. Similarly, they carry sensory information LIKE touch, pressure, cold, warmth, pain and other sensations from the skin, muscles, JOINTS and internal organs to the brain via the spinal cord. |
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| 38. |
10 examples of transformation of energy ...please tell ...its really very urgent |
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Answer» > 1. Rubbing both hands together for warmth Kinetic Energy to THERMAL Energy 2. A FALLING object speeding up Gravitational Potential Energy to Kinetic Energy 3. Using battery-powered torchlight In the battery: Chemical to Electrical Energy In the bulb: Electrical to RADIANT Energy 4.In Geothermal Power Plant HEAT Energy to Electrical Energy 5.In Thermocouple Heat Energy to Electrical Energy 6.In Hydroelectric Dams Gravitational potential energy to Electric Energy 7.In Electric Generator Kinetic energy / Mechanical work to Electric Energy 8.In Windmills Wind Energy to Mechanical Energy or Electric Energy 9.In OTEC Heat Energy to Electric Energy or Mechanical Energy 10.Using Microphone Sound Energy to Electric Energy 11.Photosynthesis in Plants Solar Energy to Chemical Energy 12. In Piezoelectrics Strain to Electric Energy 13.In Electric lamp Electric Energy to Heat and Light Energy 14.Burning of wood Chemical energy to Heat and Light Energy 15.In Fuel cells Chemical Energy to Electric Energy 16.In steam engine The heat energy to Mechanical Energy 17.In Electric heater Electric Energy to Heat hope it HELPS you (Scenario) (Energy conversions involved) Format of Answer |
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| 39. |
A student uses a lens of focal length 40 centimeter. What is its power What type of lens is it? 1 point2.5D, convex2.5D, concave-2.5D, convex-2.5D, concave |
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Answer» ONG>EXPLANATION: FOCAL length=40cm =40/100 =0.4m p=1/f =1/0.4 5/2 |
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| 40. |
a racing car has a uniform acceleration of 5m/s^2 what distance will it cover in 20 s starting from rest? |
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Answer» ong>ANSWER: S=1000m Explanation: ===Answer=== Acceleration (a) = 20 m/s² Time (t) = 20 s ============================ We have formula :- \huge{\boxed{\boxed{\sf{S \: = \: ut \: + \: \frac{1}{2} \: at^2}}}}S=ut+21at2 ___________[Put Values] S = 0(20) + 1(5)(20)²/2 S = 0 + 5(400)/2 S = 5(200) S = 1000 m |
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| 41. |
Chapter 1 st motion physics exercise |
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Answer» ong>ANSWER: R u 9th class Explanation: I am also same where are you from |
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| 42. |
4. One car moving on a straight road covers onethird of the distance with 20 km/h and the restwith 60 km/h. The average speed is(1) 40km/h(2) 80km/h(3) 46 2/3km/h(4) 36km/h |
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Answer» ong>ANSWER: HEY......! ur answer is 36 |
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| 43. |
The acceleration of block of mass 5kg |
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Answer» 50/10 15m/s 2 |
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| 44. |
96.pls answer the question |
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Answer» ONG>Answer: c.60° |
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| 45. |
How is the size of a degree defined on a Fahrenheit scale ? |
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Answer» ong>EXPLANATION: The size of a DEGREE on the Fahrenheit scale is 1/180 times the difference between the upper fixed point ( BOILING point of pure water, 212 degree Fahrenheit) and lower fixed point ( melting point of pure ice, 32 degree Fahrenheit) |
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| 46. |
A long spring of spring constant 500 N/m is attached to a wall horizontally and surface below the spring is rough with coefficient of friction 0.75. A 100 kg mass block moving with a speed10 strikes the spring. Find the maximum compression of the spring. (g =10 ms-2). |
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Answer» ONG>ANSWER: don't KNOW don't know don't know don't know don't know the answer |
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| 47. |
यूनिट OF MEASUREMENT OF ANGULAR VELOCITY |
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Answer» ong>Answer: It is a vector QUANTITY. The SI unit of angular VELOCITY is radians per second. But it may be measured in other units as well (such as degrees per second, degrees per HOUR, etc.) |
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| 48. |
Given two vectors Ā = i – 2į – 3k and B = 4i - 25 +6. The angle made by (A + B) with the X-axis is (A) 30° (B) 450 (C) 60° (D) 90° |
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Answer» ONG>ANSWER: The answer is a OPTION A Mark me BRAINLIEST |
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| 50. |
What is the reflection of light rays parallel to the main axis of a concave mirror? |
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Answer» ong>ANSWER: Rays of light PARALLEL to the principal axis of a concave MIRROR will appear to converge on a point in FRONT of the mirror somewhere between the mirror's POLE and its center of curvature. That makes this a converging mirror and the point where the rays converge is called the focal point or focus . please thank my answer |
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