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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. |
How sound travels prove with any two experiments. |
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Answer» Hshsjshsgusujsbwbbhskekwbevbehehej Explanation: Bdbbdbbxbxbjuzhsbxvv SBBE thas evdbdhkdfynbdhdbdbdbdbxbcncbcbbcbcbcbcbbbdhxhcvvvccxxxdxxxsxsxxs cxcfxcxxvx. |
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| 3. |
For a concave mirror prove that r = 2f |
Answer» Answer :Assuming that a ray of LIGHT is coming from infinite distance and strikes on the concave mirror directly. (Ray of light is parallel to the MAIN axis)
Now see the attachment carefully! :) ❒ Question is totally based on geometry only. For ∆CMN : Here ANGLE i is small, Therefore,
For ∆FMN : Applying same condition, By equating both equations, we get
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| 4. |
Three forces 5 N , 10 N and 15 N act along three sides ofan equilateral triangle AB, BC and CA. Side AB beinghorizontal. The resultant of system is |
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Answer» ab=5 MULTIPLIED by 10=50 bc=10 multiplied by 15=150 ca=15 multiplied by 5=75 |
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| 5. |
2) When a particle moves in a circular path then the direction ofcentre petal acceleration is :- |
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| 6. |
a hybrid stepper motor has a rotor pitch of 36º and a step angle of 9º, the number of its phases must be |
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Answer» really don't know what you think about it is not going to be a GREAT DAY deelena stay in the world to be a great day deelena stay in the world and the rest is history of a NEW ONE of a kind of person teach in the world |
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| 7. |
explain the difference between vibrational stretching, vibrational satellites and rotational spectrum? |
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Answer» Answer:Rotational spectroscopy is concerned with the measurement of the energies of transitions between quantized rotational states of molecules in the gas phase. The spectra of POLAR molecules can be measured in absorption or emission by MICROWAVE spectroscopy[1] or by FAR infrared spectroscopy. The rotational spectra of non-polar molecules cannot be OBSERVED by those METHODS, but can be observed and measured by Raman spectroscopy. Explanation: Please mark as brainlist |
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| 8. |
Sound travells much faster in _____LiquidsGasesPlasmaSolids |
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Answer» Answer: |
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| 9. |
What is heat give an example to show that heat is a form of energy |
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Answer» mark as BRAINLIST |
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| 10. |
Take an appreciate scale to draw ray diagram from the observation u-20 , v= 60 , f= 15 |
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Answer» bsbsbsbebebrq q q q q q q q q q q q q q q q q q q q..q.q q q q q q q q q q q q q q q qmmmmmmw q ejkj the same the same the same the same the LATEST in TECHNOLOGY a CHANCE for you to get a q q |
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| 11. |
Derive the expression of kinetic energy of an object |
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Answer» Answer: SUPPOSE a body of MASS m is moving with velocity v. It is BROUGHT to rest by applying a retarding force F. Suppose it traverses a distance s before coming to rest. Kinetic energy of body, KE = Work done by retarding force to stop it. Explanation: HOPE IT HELPS..... |
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| 12. |
Differences between music and noise in tabular form |
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Answer» Explanation: The distinction between music and noise is mathematical form. Music is ordered sound. Noise is disordered sound. Music and noise are both mixtures of sound waves of different frequencies. The COMPONENT frequencies of music are discrete (SEPARABLE) and rational (their ratios form SIMPLE fractions) with a discernible dominant frequency. The component frequencies of noise are continuous (every frequency will be present over some range) and random (described by a probability DISTRIBUTION) with no discernible dominant frequency. |
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| 13. |
The equation for an alternating current is given by i = 77 sin 314t. Find the instantaneous value at t = 2 ms |
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Answer» WOWWW it is GREAT and AMAZING questions Explanation: THATS great |
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| 14. |
5. The coefficient of thermal expansion depends on --------of the substance |
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Answer» Answer: TEMPERATUREThermal Expansion in Two Dimensions For small temperature changes, the CHANGE in area ΔA is GIVEN by ΔA = 2αAΔT, where ΔA is the change in area A, ΔT is the change in temperature, and α is the COEFFICIENT of linear expansion, which VARIES slightly with temperature. |
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| 15. |
When the pinhole camera is pointing towards the sun, then the shadow will be? |
Answer» Shadow of the BOX is the shortest when the short side is pinting towards the Sun.❤️ please MARK as BRAINLIEST ❤️❤️❤️ ND follow me ALSO thanks my all answers ❤️❤️❤️ |
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| 16. |
Write the expression for potential |
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Answer» Answer: As potential ENERGY is the energy possessed by a body by VIRTUE of its HEIGHT .. i.e P.E.=mgh |
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| 17. |
Electric flux is maximum, when angle between E and surface area is:(A) 0°(B) 90°(C) 180° |
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Answer» B) 90. DEGREE and I will give you the REASON ALSO . This is because MAGNETIC field is perpendicular to current in this case . |
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| 18. |
The mass of metal is 405g and its volume is 150cm calculate the density |
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Answer» mmmmmmmmmmmmmmmmmmm |
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| 19. |
Define the term refractive index |
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Answer» Answer: REFRACTIVE index is the RATIO of LIGHT in a VACCUM to its VELOCITY in a specified medium. |
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| 20. |
two equal forces have the same square of their rasultant equal to their times their product. Find the angle between them |
Answer» ANGLE between them is 90 DEGRES |
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| 21. |
The nature of nerve impulse is ............. |
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Answer» Neuroscientists describe the nerve impulses as ELECTRICAL signals that travel down an AXON or as a WAVE that has an action or electric potential. Such description MAY RECOGNIZE a nature of the nerve impulses as electric current. Explanation: HOPE IT IS HELPFUL FOR U...✌ |
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| 22. |
What are the two uses of semi conductors |
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Answer» Answer: 0ucph pyoyoy of phogpypypupupupuphphphph Explanation: |
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| 23. |
Calculate the time if current is 4 ampere and power is 800 watt and volt is 900 volt |
Answer» Given:-
To Find:-
Solution:-We have to calculate the time Using this FORMULA We get • P = VIt Where, P is the Power V is the Potential Difference I is the Current t is the time taken Substitute the value we get → 800 = 900×4×t → 800 = 3600 ×t → t = 800/3600 → t = 8/36 → t = 2/9 → t = 0.22 s Therefore, the time is 0.22 Second . |
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| 24. |
What is mean by specific latent heat of fusion ? |
Answer» specific latent of heat of fusion :-The amount of heat energy ABSORBED at constant TEMPERATURE by unit MASS of a solid to convert into liquid PHASE is called specific latent heat of fusion |
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| 25. |
State another example of a transverse wave |
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Answer» Answer: Transverse wave, motion in which all points on a wave OSCILLATE along paths at right angles to the direction of the wave's ADVANCE. SURFACE ripples on WATER, seismic S (secondary) waves, and ELECTROMAGNETIC (e.g., radio and light) waves are examples of transverse waves. hope it will help you ✌️ |
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| 27. |
For a spin-1/2 particle placed in a magnetic field B, the Hamiltonian is H =-yBS, [email protected], where S, is they-component of the spin operator. The state of the system at time t=0 is (y (t = 0)) =1+), whereS, I+) = +1+). At a later t, if S, is measured then what is the probability to get a value – ħ/2?(a) cos(wt)(d)sin^2(omega t/2)(c)0(b) sin^2(omega t) |
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Answer» I don't know |
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| 28. |
1Spreading of one liquid over other willbe favored when... |
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| 29. |
योग शब्द का उद्गम किस धातु से हुआ है |
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Answer» Answer: am so sorry I don't KNOW THOS language please don't mind OKEY |
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| 30. |
What is the goal of health confirmation? * |
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Answer» Explanation: And while health goals commonly have to do with weight loss, your health is also about integrating self-care into your life, staying on top of your mental health, and GETTING adequate sleep. Maintaining OPTIMAL health isn't only GOOD for your well-being, it also affects your ABILITY to achieve your other goals. |
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| 31. |
Define energy and state law of conservation |
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Answer» In physics and chemistry, the law of conservation of energy states that the totalenergy of an isolated SYSTEM remains CONSTANT; it is said to be CONSERVED over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite EXPLODES. |
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| 32. |
Name any two appliances that use electromagnets |
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Answer» Answer: TWO APPLIANCES that use ELECTROMAGNETS are:-
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| 33. |
मुक्त इलेक्ट्रॉन सिद्धांत के आधार पर ओम का नियम स्थापित कीजिए। |
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Answer» जर्मन भौतिकविद् एवं तकनीकी विश्वविद्यालय के प्रोफेसर जॉर्ज साइमन ओम ने सन् 1827 में यह नियम प्रतिपादित किया था। ओम के नियम (OHM's LAW) के अनुसार यदि ताप आदि भौतिक अवस्थायें नियत रखीं जाए तो किसी प्रतिरोधक (या, अन्य ओमीय युक्ति) के सिरों के बीच उत्पन्न विभवान्तर उससे प्रवाहित धारा के समानुपाती होता है। |
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| 35. |
8. Calculate the pH of 0.04 M HNO, Solution. |
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| 36. |
Derive the velocity with which the car should travel on a level road with diagram. |
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Answer» answer is above. Explanation: |
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| 37. |
Discuss the motion of charge in cyclotron |
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Answer» A cyclotron is a type of particle accelerator in which charged particles ACCELERATE outwards from the center ALONG a SPIRAL path. The particles are held to a spiral trajectory by a static magnetic field and accelerated by a rapidly varying (radio FREQUENCY ) electric field. Explanation: HOPE IT IS HELPFUL FOR U....✌ |
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| 38. |
Melting point or boiling point or heating curve represents1.parallel to temperature axis2.slope of curve of time 3.parallel to time axis4.slope of curve of Temperature |
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Answer» Answer: |
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| 39. |
Calculate the amount of work required to stop a car of 1000 kg moving with a speed of 72 km/h 2 |
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Answer» Answer: Here , Initial Velocity = U = 72 km/h = 20m/s Final Velocity = V = 0 m/s Mass of the body = m = 1000 kg Now using the concept of Work Energy Theorem : Work Done = ½mv²-½mu² = 0-½×1000×20 = 10000 N The total work done is 10000 N. |
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| 40. |
Calculate the number of moles : (a) 18 g of Magnesium (Mg-24u) |
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Answer» Answer: |
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| 41. |
The resultant of two perpe dicular vector of equal magnitude is(a) A(b) 2A(c) A(2)^1/2 (A underoot 2) (d) A^2 (square of A) |
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| 42. |
मम प्रदेशः छत्तीसगढ़ : का विस्तार पूर्णांक वर्णन कीजिए |
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Answer» wahhhhhhhhhhhhhhhhhhhhh |
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| 43. |
Find the value of RI of glass if a light ray incident at an angle of 45° suffers a deviation of 15°.spam ≈ report ❌❌❌❌❌ |
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Answer» Selfish: *Plz read carefully* ____________________ ```Friendship is not about "sorry".``` ```It's about "saari ghalti teri thi".``` ____________________ ```Friendship is not about "Thanks". It's about "KOI Ehsaan nahi kiya mujhpe".``` ____________________ ```Friendship is not about "I miss u." It's about "kahan mar gaye thay itne din"?``` ____________________ ```Friendship is not about "I understand." It's about "hamesha main HI kyun samjhoon"?``` ____________________ ```Friendship is not about "I'm happy for your success." It's about "chal beta treat de"?``` ____________________ ```Friendship is not about "are u coming to see us tomorrow"? It's about "Dramaybazi band kar, aur chup chaap chal MERE sath."``` ____________________ *"Zindagi me dost nahi, dosto me zindagi hai"* ____________________ *Its a really true friendship* _____________________ *Forward to your* *15 best FRIENDS* *me too if I am;* *If you get 10* *RETURN then you have true and loving friends in your life...* ____________________ |
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| 44. |
18. A body is subjected to 100KN pull to a bar of 100 mm.sq.cross section, the stressdeveloped is |
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Answer» KN PULL to a BAR of 100 mm.sq. cross SECTION, the stress developed is |
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| 45. |
(iii) Atmospheric pressure is 1.0 x 105 Pa. Calculate the total pressure on the LR5 when it is at a depth of 700 m.(1)total pressure =Pa |
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| 47. |
Derivation of charge to mass ratio of neutronplzz give correct ans...neutron....not electron... |
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Answer» hiii Explanation: the E/m RATIO is known as SPECIFIC charge where e is the charge on particle and m is the MASS of particle for neutron---->charge is zero mass=1 |
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| 48. |
When a gas is under pressure, does it change its volume |
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Answer» Answer: BOYLE's law states that the volume of a given MASS of gas varies inversely with the pressure when the temperature is kept constant. An INVERSE relationship is described in this way. As one variable increases in VALUE, the other variable decreases. if it HELPS then mark me as braineliest |
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| 49. |
Define the term weight and mass |
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Answer» Answer: In common usage, the mass of an object is OFTEN referred to as its weight, though these are in FACT different concepts and quantities. In scientific contexts, mass is the amount of "matter" in an object (though "matter" MAY be difficult to DEFINE), whereas weight is the force exerted on an object by gravity. In other words, an object with a mass of 1.0 kilogram weighs approximately 9.81 newtons on the surface of the Earth, which is its mass multiplied by the gravitational field strength. The object's weight is less on Mars, where gravity is weaker, and more on Saturn, and very small in space when far from any significant source of gravity, but it ALWAYS has the same mass. |
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