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. |
Si and cgs unit of energy of conversion factor |
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Answer» Yes |
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| 2. |
Give reason of the fragrance of increase stick spreads out in air to distance |
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Answer» Because space between the air MOLECULES is very MUCH so the fragrance PARTICLE spread to all the AREA |
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| 3. |
Why is there athick bed of sand a high jumped to fall on after his jump? |
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Answer» HEY! _______________ An athlete is made to fall on a cushioned BED. This is just to increase the time of fall of athlete after a jump. This is to prevent INJURIES as well. If we fall on a cemented AREA, we may get hurt. But it won't be in case of a soft bed. _________________ Hope it helps...!!! |
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| 4. |
Can any life exist on the moon? explain in brief. |
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Answer» From view of today no any one exist freely on moon . BECOZ 4 living air and water is NECESSARY to us but these R not present on moon. |
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| 5. |
Which lamp is highly intense xenon arc or deuterium lamp? |
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Answer» HII mate•□ 》xenon ARC LAMP is HIGHLY INTENSE . ☆☆ |
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| 6. |
Question 33:When a tree is shaken, its fruits and leaves fall down: Why ?Lakhmir Singh Physics Class 9 |
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Answer» Because of GRAVITATIONAL FORCE. |
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| 7. |
What is meant by term acceleration state the s i unit of acceleration????????? |
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Answer» Acceleration is the RATE of CHANGE of velocity. |
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| 8. |
Difference betwn zero crossing detector and basic comparator |
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Answer» ZERO crossing detector. A zero crossing detector is a comparator with the reference level set at zero. It is used for DETECTING the zero crossingsof AC signals. It can be MADE from an operational amplifier with an INPUT voltage at its POSITIVE input. Hope this helps you... |
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| 9. |
Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?Lakhmir Singh Physics Class 9 |
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Answer» The speed that TRAIN TRAVEL NEXT 100 km,so as to average 70 km for the whole JOURNEY is 90 km/h. |
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| 10. |
What kind of energy transformations takes place at a thermal power stations |
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Answer» Hey mate |
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| 11. |
What are the two kind of charge what are the properties? |
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Answer» The two kinds of CHARGES are: NEGATIVE and the positive. |
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| 12. |
Describe an experiment to demonstrate that water absorbs heat during boiling at aconstant temperature |
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Answer» Heya.. |
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| 13. |
Internal energy of an ideal gas is a function of |
| Answer» PROPERTY of GAS MASS and TEMPERATURE | |
| 14. |
Squeezing a piece of lemon between fingers to extracts its juice |
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Answer» Applying more PRESSURE in an area so that the MATERIAL INSIDE it MOVES from high pressure to low and gets fall in the GLASS. |
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| 15. |
Give the si unit of stefans constant in cgs system |
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Answer» It's VALUE 5.670 367 X 10-8 W m-2 K-4 |
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| 16. |
A particle is projected from the ground at an angle theeta with the horizontal with an initial speed of u. the time after which velocity vectoe of projection is perpendicular to the initial velocity |
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Answer» TIME= u /(g*SIN theeta) where is is initial velocity g is ACCELERATION due to GRAVITY |
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| 17. |
an 200 M TRAIN CROSSES A 400 M BRIDGE WITH A. VELOCITY OF 36KM/HR FIND THE TIME TAKEN TO THE TRAIN TO CROSS THE BRIDGE |
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Answer» HEY FRIEND here is your answer D=200 m+400 m=600 m S=36km/h=36×5÷18=10 m/SEC T=? T=D÷S T=600÷10 T=60 sec hope it helps to you |
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| 18. |
Value of planks constant??? |
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Answer» HII.. The VALUE of PLANKS constant =6.626×10^-34.. HOPE this HELPS! |
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| 19. |
What is a lunar month |
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Answer» Hyy.. |
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| 20. |
(6). How is the size of degree defined on the Fahrenheit scale?. |
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Answer» The SIZE of a degree in 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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| 21. |
An athlete completes one round of a circular track of diameter 49m in 20s. Calculate the distance covered and displacement at the end of 30s. |
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Answer» Hey man.. |
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| 22. |
Second equation of motion |
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Answer» Second EQUATION of Motion. Let 'U' be the initial VELOCITY of a BODY which moves with UNIFORM acceleration 'a'. After 't' seconds let its velocity be 'v'. ... It is given that acceleration of the body is uniform. |
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| 23. |
An object 0 mass 40kg is raised to a height of 5m above the ground what is its potential energy ? if the object is allowed to fall find its kinetic energy when it is half way down |
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Answer» Mass=40 kg |
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| 24. |
Why are the states of motion and rest considerd relative? |
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Answer» Suppose Your Fatherboarded You and Your Mother on to the train. The Train starts movingand your FATHER Waves his Hand TOWARDS Your Mother. Now Your Mother isin Motion with respect to your Father but when you see your mother inthe compartment with you. Is She in Motion? No, She is sitting rightbeside you, not moving, at REST. So Your mother ismoving and at the same time at rest. To be Precise, YourMother is in Motion with respect to your Father but She is at restwith respect to you. You See, How Onething can be in motion and at the same time at rest, The onlydifference is the POINT of Observation ( Scientifically, Frame ofReferance). So The Motion andRest Terms are Relative. |
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| 25. |
A proton and an electron are placed apart in free space find the magnitudeof the electrostatic force between them what is the nature of the force? |
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Answer» Hey according to the coloumbs law ...it states That |
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| 26. |
Why is nicrome used as heating element? |
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Answer» HII There!! Nicrome wire is used as a heating ELEMENT in ELECTRICAL applainces because it has a high MELTING POINT and have a higher restivity. Moreover, they do not get oxisidised (or burnt) Hope it helps |
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| 28. |
What is the formula and symbol of electrical resistance? |
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Answer» SYMBOL of ELECTRIC resistance is R Its FORMULA is potential/Current Its UNIT is volt/amp or OHM |
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| 29. |
Compare the properties of solid liquid and gaseous materials |
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Answer» Prop. of SOLIDS : |
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| 30. |
The induced charge on the dieletric of a capacitor of capacitance 4f when charged by a battery of 50v |
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Answer» Use general equation: Q = CV |
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| 31. |
A pebble is thrown vertically upward with a speed of20 metre per second how high will it be after 2 second |
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Answer» USING the S = ut + 1/2gt^2 equation; Here, U = 20, t = 2 & G = -10 Therefore, 20×2 + 1/2×(-10)2^2 S = 20 metres |
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| 33. |
What is the total charge on 75kg of electrons? |
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Answer» Number of ELECTRONS in 75 kg = 759.11×10−31759.11×10−31 |
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| 34. |
Play experiment for newton's 1 st law of motion |
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Answer» HEYAAAA......!!! HERE IS YOUR ANSWER.... |
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| 35. |
Three equations of motion |
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Answer» Hi |
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| 36. |
Describe an activity to demonstrate electromagnetic induction |
| Answer» TAKE an coil of insulated copper WIRE of NEARLY 50 turns and take a bar magnet and after that bring magnet in a to and fro motion near that coil . the could must be connected to galvanometer and WEN U complete the activity given above there will flow of electromagnetic induction | |
| 39. |
A resistor is cut in two equal pieces and joined in parallel.what is the resistance in combination |
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| 40. |
Denser medium will phase change when reflection take place |
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Answer» during REFRACTION from DENSER to rarer MEDIUM BENDS towards the NORMAL. |
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| 41. |
Any 4 slogans on conservation of water and wastage of water |
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Answer» (1)A drop of WATER is worth more than a sack of gold to a THIRSTY man. (2)save Water the world is in your hands. (3)THOUSANDS have lived without LOVE,not one without water. (4)save water save earth hope it helps you. |
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| 42. |
How many spheres are there on earth what are they? |
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Answer» 4 SPHERES are there on the earth: 1) geosphere 2)hydrosphere 3)BIOSPHERE 4)ATMOSPHERE |
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| 43. |
How many resistors (in parallel) are required to carry 5A on a 220V line? |
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Answer» V = ir 220 = 5.r r = 220/5 r = 44ohm |
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| 44. |
Define pressure. a pressure of 100 pa acts on a surface of area 15cm2 by a block of mass 'm'. calculate 'm' |
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Answer» PRESSURE is defined as the force acting per unit area of surface .. GIVEN .. P = 100PA A = 15 cm2 P = F / A F = PA F = 100×15 F = 1500N We know F = mg m = f / g m = 1500/ 10 m = 150 kg |
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| 45. |
How can 3 resistors of resistance 2,3,6ohm be connected to give a total resistance of 4,1ohm |
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Answer» 3 and 6 in PARALLEL and 2 in SERIES with this COMBINATION |
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| 46. |
An amount of work w is done by a system and q amount of heat is supplied to the system. the equation of change in internal energy of the system is |
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Answer» S nxixnxhxosnsbskksskzkzdbjdldmf fhdldnz hi kdvdkjcbcjxbd in d hmm on no E NAHI KI punch you have any idea what I was just a BIT of time and where are you doing today babe how are you going out to EAT with me and you know what to do |
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| 47. |
Relative density dimension |
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Answer» As I KNOW... It is DIMENSIONLESS |
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| 48. |
Dimension of plancks constant ?? ☺☺ |
| Answer» PLANCK's CONSTANT (h) = Energy(E) / FREQUENCY (ν). Putting these values in above equation we get, DIMENSIONAL Formula of Planck's constant = M1L2T-1. SI unit of Planck's constant is joule-seconds (j-s). | |
| 49. |
An electric bulb is rated 220 v and 100 w. when it is operated on 110 v, the power consumed will be |
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Answer» HEY FRIEND your ANSWER is P=v²/R 100=220²/R R100=48400 then R= 484 v²/R= 110×110/484=25w |
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| 50. |
State the 1st, 2nd and 3rd law of motion |
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Answer» An object which is at REST or in motion will TEND to be in rest or in motion until or unless an external UNBALANCED force is applied on it. 2nd Force is directly proportional to the change in momentum of an object. This GIVES F = ma 3rd For every action, there is an equal and opposite reaction. |
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