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. |
Q. 25 a diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light |
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Answer» ength is INVERSELY proportion to nf=1/n-1 (where n is REFRACTIVE index)we know that blue light has more refractive index then red colourso focal length of convex lens will INCREASE when blue light is used instead of red COLOR |
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| 2. |
How to develop our communication skills |
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Answer» he basics of NONVERBAL communication. ...You have to over-COMMUNICATE just to communicate. ...Avoid relying on visual aids. ...ASK for honest feedback. ...Engage the audience in discussion. ...Start and end with key POINTS |
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| 3. |
What is the amount of nuclear binding energy of the mass defect is ∆m |
| Answer» WHEREC is the VELOCITY of LIGHT#H | |
| 4. |
How what were the teachings of Buddha and Jainas |
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Answer» m is centered UPON the LIFE and TEACHINGS of GautamaBuddha, whereas Jainism iscentered on the life andteachings of Mahavira. |
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| 5. |
What do you understand by the statement light from the sun is unpolarized explain how does sunlight get polarized by the process of scattering |
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Answer» he the LIGHT of the suntakes all possible directions, it is SAID to be unpolarized light. When the unpolarized light falls on the TRANSPARENT SURFACE at an angle of incidence equal to thepolarizing angle or Brewster's angle, then it is completely planepolarized. |
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| 6. |
A body of mass 1 kg moving with a velocity 5 ms sticks to a body of mass 5 kg after colliding with it .if the second body is initially at rest find the loss in k.E |
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Answer» a sb mc CM mc do KA do pta so JA CM BBC kai is DJ hand Ms DI pe su ka xm mc cha kla to is so bcz bldg is do US |
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| 7. |
What is the relationship between wavelength frequency and amplitude |
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Answer» wave, the amplitude can be ANYTHING. There is a simplerelationship between wavelength, frequency, and VELOCITY. You can see this easily: a wave travels ONE wavelength L in one period P, so v = L/P. The period P is defined as the inverse of the frequency F, so P = 1/f. |
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| 8. |
How to be a topper in science ??? |
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Answer» through the TOPIC thoughroly and UNDERSTAND the CONCEPT..... |
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| 9. |
What are the two types of refractive indexes? |
| Answer» TIVE INDEX through rarer MEDIUM and*refractive index through denser medium are the 2 types of refractive index. | |
| 10. |
Waves of frequency 150Hz amplitude is 6 cm and distance is 25 cm are produced in a string.find the (a)wavelength (b)amplitude (c)velocity of the waves in SI units |
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Answer» 8129373982 i will ANSWER you |
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| 11. |
Name the hormones secreted by the following endocrine glands and specify one function of each first thyroid second pituitary third pancreas |
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Answer» ere is your answer1)Thyroid gland ◆ Hormones -thyroxine◆Function - It helps in metabolism of carbohydrates,fats and proteins.2) PITUITARY gland◆Hormones - Growth hormone◆Function - It helps in development and growth of an individual.3)Pancreas◆Hormones - Insulin◆Function - It helps in maintaining blood SUGAR LEVEL in the body.Hope it helps:)MARK me brainliest |
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| 12. |
The weight of the person on moon is 10 N then what is his weight on the moon..??? |
| Answer» E U SAYING. DEFECT in ur question | |
| 13. |
Why earth rotate around its axis and which force act as a motion |
| Answer» ETAL force helps to rotate the EARTH around its axis | |
| 14. |
If lightning strikes on a house from which parts of the house is discharge passes to the earth |
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| 15. |
Source of energy for all things being1) battery2)sun3)water4)generatet |
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| 16. |
Activities Identify a diode, transistor, I.c. and resistor from mixed collection. |
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Answer» identification of each element their appearance and working is to be considered. Below are the noted characteristics of each of these element which should be USED for identification :1) Diode - A diode is a two terminal device which conducts only in forward biased mode.2) Transistor: A transistor is a THREE terminal device having emitter, base and collector. So any three terminal device in the mixture is a transistor.3) Integrated Circuit (IC) - An integrated circuit is a multi terminal device and looks LIKE a CHIP. So any multi terminal device in the mixture is an IC.4) Resistor - A registor is a two terminal device with straight appearance and having rings in it. It conducts whenever a voltage is applied across it. There is no concept of biasing for a resistor.Since both Diode and resistor are two terminal device so they both needs to be identified either by their looks or by working principal i.e. resistor conducts for all the applied voltage while diode conducts only for forward biased voltage. |
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| 17. |
Mass of a body if an engine rated 10000watt |
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Answer» will WORK. . |
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| 18. |
Why does a hot substance in a thermos flask cool down after sometime time |
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Answer» re❤❤here's UA answer : Since there is a vacuum between the WALLS of the bottle, the flow of heat by convection is also ruled out. Due to the silvering of the walls heat is not lost by RADIATION. As a result, HOT things kept in a THERMOS flask, do not become cold and cold ones do not become hot for a long time.HOPE IT HELPS UH bYe see uh again plz mark it as brainlist |
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| 19. |
If focal length of a lens is in negative then which lens is it |
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| 20. |
An object is placed at a distance of 12 cm from a concave mirror of radius of curvature 6 cm. what will be nature of image |
| Answer» GE WOULD be REAL and INVERTED in NATURE | |
| 21. |
Draw the various instruments. Note the parts of these instruments that vibrate to produce sound |
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Answer» eread this all PARAGRAPHS for your ANSWER |
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| 22. |
The radial components of centripetal acceleration at poles of earth is.? A) zero B) rw2 C) r2w D) infinity |
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Answer» tripetal acceleration is about 3.39 cm/sec^2 at the EQUATOR (I'm GETTING this NUMBER from the CRC Handbook of Chemistry and Physics), which is about 0.35% the acceleration of GRAVITY at the surface of the earth, g. |
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| 23. |
Derivation of Maxwell law of distribution of velocity and its experimental verification |
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Answer» it will HELP you |
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| 24. |
A force f acting on an object varies with distance x as shown here. The force is in newton and x is in metre. The work done by the force in moving the object frm x = 0m to x = 6m is |
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| 25. |
2 particle of qu4aul mass m go around a cirvle of tadus r under the acation of tehir mutual gravitaion attravton the spedd of each paricle with respect tot their centre of mass is |
| Answer» KNOW the ANSWER. | |
| 26. |
What happened to wet bulb temperature when surrounding temperature is increased |
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Answer» udyjfhdjgfhfcrfccudyfhceucdyfccje udunfuydnfhendkfh |
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| 27. |
If a resistance of 100 ohm are connected in parallel then total resistance in parallel combination is |
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| 28. |
If a pump can raise 1000 liters of water per minute to a height of 45 miters ,then the horse power of the pump is ? |
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Answer» ind the work done by the pump that ismass*acceleration due to GRAVITY*heightin this case that is :1000*45*9.8=441000 [Convert liter into kg]so work done by the pump is 441000 joule.now according to the formula of powerpower= Work/Time you can FIND the power of the pump in this case that is: Power=441000/60 [60 seconds=1 minute] =7350 wattconvert the watt to horse power by CONVERSION method746 watt EQUAL to 1 horse POWER1 watt is 1/746 horse powerand finally 7350 watt is 1*7350/746so the horse power of the pump is 9.85.Hope this helps. |
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| 29. |
A light mass and a heavy mass have same momentum. who will have more kinetic energy. |
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Answer» m is same therefore KE is INVERSELY proportional to mass. Therefore lighter body has more KINETIC energy. If light and heavy bodyhave equal momentam then lighter body will have higher kinetic energy, since it's velocity have to MAKE up for its lighter mass. |
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| 31. |
What will be the kinetic energy of a moving car when its mass is tripled? |
| Answer» E the MASS of the carthe KINETIC ENERGY = when mass is trippledk. e kinetic energy increased by three TIMES | |
| 32. |
How learn carbon compound lesson give some on it |
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Answer» it on YOUTUBE........ |
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| 34. |
What is excess pressure inside the liquid drop. Derive it |
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Answer» the expression of EXCESS PRESSURE inside the liquid DROP. consider a liquid drop radius (R) and surface tension (T). DUE to excess pressure inside the liquid drop |
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| 35. |
A 4 ohms resistance wire is doubled by joining its two ends together. Calculate the new resistance of the wire |
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Answer» he ATTACHMENT |
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| 36. |
If young's modulus of the material of a rod is 2*10^11 and density |
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| 37. |
At any point on the v-i characteristics of a semiconductor diode the slope of v-i characteristics is called |
| Answer» PE VALUE GIVES RESISTANCE R | |
| 38. |
hey mates. ✌️✌️ define reflection and what are laws of the reflection? Also describe the characteristics of a plane mirror ? |
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Answer» ate here is your answer ☺✌⭐REFLECTION - bouncing BACK of light .LAWS OF REFLECTION - ✔incident ray , REFLECTED ray and NORMAL all lie in the same plane ✔angle i = angle E ⭐CHARACTERISTICS OF A PLANE MIRROR ⭐✔image is of the same size as the object .✔image behind the mirror is at the same distance as the object in the front of the mirror .✔the image is virtual and erect ✔image is laterally INVERTED. ⭐VIRTUAL IMAGE⭐- ✔can not be formed on a screenhope this may be helpfull to you ✌✌pls mark as brainlist ✌✌☺@alishka |
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| 39. |
HoW to Derivatate the kinetic energy,conservation of energy, potential energy,Commercial unit of energy. |
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| 40. |
Two bodies of mass 2gram and 5 gram are moving with the velocity 2m/s and 5m/s respectively. They both collide and after collision 1 body moves with 1 millimeter per second velocity. Then find the velocity of 2nd body |
| Answer» ELOCITY of SECOND BODY is 0.028m/s | |
| 41. |
Current is 40mA time is one minute then what will be the no of electrons? |
| Answer» MAT = 60scharge, Q = It = 40 × 60 = 2400 mC = 2.4 Ccharge in 1 ELECTRON = 1.6 × 10^(-19) Ctotal electrons in 2.4 C = 2.4 ÷ (1.6 × 10^(-19)) = (2.4/1.6) × 10^(19) = 1.5 × 10^(19) electrons | |
| 42. |
In youngs double slit experiment explain briefly how |
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Answer» a classic example of interference effects in light waves. Two light rays pass through two slits, separated by a distance dand strike a screen a distance, L , from the slits, as Double slit diffractionIf d < < L then the difference in path length r1 - r2 travelled by the two rays is approximately:r1 - r2  dsin where  is approximately equal to the angle that the rays make relative to a perpendicular line JOINING the slits to the screen.If the rays were in phase when they passed through the slits, then the condition for constructive interference at the screen is:dsin  = m ,m =  1,  2,...whereas the condition for destructive interference at the screen is:dsin  = (m + ) ,m =  1,  2,...The points of constructive interference will appear as bright bands on the screen and the points of destructive interference will appear as dark bands. These dark and bright spots are called interference fringes. Note:In the CASE that y , the distance from the interference FRINGE to the point of the screen opposite the center of the slits (see Fig.22.10) is much less than L ( y < < L ), one can USE the approximate formula:sin   y/Lso that the formulas specifying the y - coordinates of the bright and dark spots, respectively are:y Bm =  brightspotsy Dm =  darkspotsThe spacing between the dark spots isy = If d < < L then the spacing between the interference can be large even when the wavelength of the light is very small (as in the case of visible light). This give a method for (indirectly) measuring the wavelength of light. (See Ex.6 at the end of this Chapter.)The above formulas assume that the slit width is very small compared to the wavelength of light, so that the slits behave essentially LIKE point sources of light. |
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| 43. |
if a voltage across a bulb is 220 volt and current flowing through it with 0.45 amphere calculate the power of the bulb |
| Answer» VOLTAGE * CurrentPower = 220 * 0.45Power = 99 VA | |
| 44. |
Red light is incident on a converging lens of focal length f . State with reason how f will change if red light is replaced by blue light |
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Answer» ength of a lens varies linearly with WAVELENGTH of LIGHT used. This is what leads to chromatic dispersion!SINCE violet light has a shorter wavelength compared to RED light, focal length of a lens will decrease if red light is REPLACED by violet light.Hope that helps!! |
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| 45. |
How will you join the resistor 3 ohma ,6 ohms, and 8 ohms to get an equivalent resistence of 10 ohms? |
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| 46. |
The velocity and acceleration of a body may not be necessarily in the same direction |
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Answer» ts true BCOZ if a ball going in upward direction with CONSTANT velocity have velocity in upward direction but the acceleration i.e. g in DOWNWARD direction |
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| 47. |
Answer it fast plzz i will mark you as brainlist plzz write correct answer |
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Answer» are in SERIES connectionR1+R2=15R4+R5=15now as they are in PARALLEL connection1/R=1/15+1/15+1/R31/R=1/15+1/15+1/151/R=1/5R=5hope its CORRECT |
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| 48. |
Describe an activity to show fleming's left hand rule |
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Answer» your LEFT HAND THUMB finger,middle finger and fore finger such a way that they are mutually perpendicular to each other. if the forefinger point in the direction of the magnetic field and the middle finger points in the direction of a current the thumb finger gives the direction of the FORCE ACTING on the conductor |
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| 49. |
Two lamps one rated 100 watt at 220 watt and the other 200 watt at 200 vs voltage are connected in series and in parallel to electric mainly supply of 220 voltage find the current drawn in each case |
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Answer» re is the ANSWER........ |
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