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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. |
Write three uses of Cancave and canvex mirrar |
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Answer» please MARK me as brainlist Explanation:hope it helps you to UNDERSTAND |
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| 2. |
A bucket filled with water is revolved in a vertical circle of radius 4m. Speed of bucket at highest point to avoid fall of water is? A)2m/s B)4m/s C)2.5m/s D)2πm/s |
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| 3. |
How do you explain that an object is in uniform circular motion |
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| 4. |
Who was the last to set foot on the moon? |
| Answer» COMMANDER EUGENE CernanApollo 17 mission commander Eugene Cernan holds the lower corner of the U.S. flag during the mission's first moonwalk on Dec. 12, 1972. Cernan, the last man on the moon, traced his only child's initials in the dust before climbing the ladder of the lunar MODULE the last timeExplanation:hope this ANSWER help u | |
| 5. |
Describe the function of meristem |
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Answer» Meristem ZonesThe apical meristem, also known as the “growing tip,” is an undifferentiated MERISTEMATIC tissue found in the buds and growing tips of roots in plants. Its MAIN function is to trigger the growth of new CELLS in YOUNG seedlings at the tips of roots and shoots and forming buds.Explanation:plz follow me |
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| 6. |
Find the current across AB |
| Answer» TION:answer is zero because POTENTIAL should be same due to which no current FLOW. | |
| 7. |
In html while creating a table we can not use background |
| Answer» TION:................... | |
| 8. |
What are central and non central force? one example for each |
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Answer» tion:GRAVITATIONAL force is a central force. In our solar system, it acts TOWARDS the center of the planetary bodies. FRICTION is a non-central force. Central force is the force that is radially pointing and the magnitude is dependent on the distance from the source. Examples of central forces are gravitational force, ELECTROSTATIC forces, and spring force.Non-central force: A non-central force is that force which does not simply depend upon the distance between the centres of two interacting bodies but also on other parameters such as their spin and RELATIVE orientation.it is helpful follow me |
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| 9. |
Please find answers for the cross word puzzle asap |
| Answer» GIVE the HINT that i SOLVE this QUESTION | |
| 10. |
Some advantages and disadvantages of frictional force |
| Answer» ADVANTAGES of Friction:Friction is responsible for many types of motionIt helps us walk on the groundBrakes in a car make use of friction to stop the carAsteroids are burnt in the ATMOSPHERE before reaching Earth due to friction.It helps in the generation of heat when we rub our hands.Disadvantages of Friction:Friction produces unnecessary heat leading to the wastage of energy.The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.Forest fires are caused due to the friction between tree branches.A lot of MONEY goes into preventing friction and the usual WEAR and TEAR caused by it by using techniques like greasing and oiling. | |
| 11. |
(d) What safety measures should you follow while handling electric appliances? |
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Answer» tion:Avoid water at all times when working with ELECTRICITY. Never use equipment with frayed cords, DAMAGED insulation or broken plugs.If you are working on any RECEPTACLE at your home then always TURN off the mains. |
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| 12. |
Show with an experiment that black bodies are good absorbers and emitters of heat than white bodies. |
| Answer» YA BLACK BODIES are GOOD ABSORBERS | |
| 13. |
Which of the following physical quantity is not a fundamental unit?(a) Length(b) Mass(c) Magnetic field (d) Current |
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Answer» Option C : Magnetic FieldAdditional Information :-Fundmental Quanties are basic Physical QUANTITIES Which are Independent.All Other Quanties Are DERIVED from These Fundamental Quantities . Quantities Derived From Theses Fundamental Quantities Hence Are called Derived Quantities.Fundamental Quantities : - LENGTH , Mass , Time , Current , amount of Substance , Temprature and Luminous Intensity.If it HELPED then Please Follow |
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| 15. |
What are central and non central force |
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Answer» Characteristics: (i) Central forces are long range forces. ... Non-central force: A non-central force is that force which does not SIMPLY depend upon the distance between the centres of two interacting bodies but ALSO on other parameters such as their SPIN and relative orientation.Explanation:HOPE it helps you Plz FOLLOW me |
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| 16. |
the initial and the final temperature of a copper sphere was measured by an observer to be (41.2+/-0.1)°c and (31.0-/+0.3)°c respectively change in the temperature of the sphere with proper error limits is please help |
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Answer» the initial and the final temperature of a copper sphere was measured by an observer to be (41.2+/-0.1)°c and (31.0-/+0.3)°c respectively To FIND : change in the temperature of the sphere with proper error limits isSolution: initial temperature of a copper sphere = (41.2+/-0.1)°c final temperature of a copper sphere = (31.0-/+0.3)°c change in the temperature = 41.2 - 31.0 = 10.2 °CError Limits gets added ±-0.1 , -/+0.3 = ± 0.4 °C change in the temperature of the sphere with proper error limits = 10.2 ± 0.4 °C Learn More:14. MASS of a body is (10 +-0.1) kg. VOLUME is (1 +- 0.1).m. Then ...brainly.in/question/10682117A rectangular BOARD is measured with SCALE having a qureshi of 0.2 ...brainly.in/question/11025864 |
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| 17. |
On observing a sign board about speed limit, a driver applies brakes and reduces his speed from 100 m/s to 50 m/s though a distance of 50 m. The uniform retardation provided by the brakes (in m/s2) will be |
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Answer» 50m/s EXPLANATION:this is your ANSWER for AAKASH TEST |
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| 18. |
How can i eleminate thermo emf in carey froster circuit taking direct and reversed current readings? |
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Answer» ndjsjeksmsnskskskExplanation:ncnxmxmxmxmmxmzkzn |
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| 19. |
Write down the expression for angular momentum in three dimensions |
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Answer» ᴇ ᴅɪᴍᴇɴsɪᴏɴs, ᴛʜᴇ ᴀɴɢᴜʟᴀʀ ᴍᴏᴍᴇɴᴛᴜᴍ ғᴏʀ ᴀ ᴘᴏɪɴᴛ ᴘᴀʀᴛɪᴄʟᴇ ɪs ᴀ ᴘsᴇᴜᴅᴏᴠᴇᴄᴛᴏʀ ʀ × ᴘ, ᴛʜᴇ ᴄʀᴏss ᴘʀᴏᴅᴜᴄᴛ ᴏғ ᴛʜᴇ ᴘᴀʀᴛɪᴄʟᴇ's ᴘᴏsɪᴛɪᴏɴ ᴠᴇᴄᴛᴏʀ ʀ (ʀᴇʟᴀᴛɪᴠᴇ ᴛᴏ sᴏᴍᴇ ᴏʀɪɢɪɴ) ᴀɴᴅ ɪᴛs ᴍᴏᴍᴇɴᴛᴜᴍ ᴠᴇᴄᴛᴏʀ; ᴛʜᴇ ʟᴀᴛᴛᴇʀ ɪs ᴘ = ᴍᴠ ɪɴ ɴᴇᴡᴛᴏɴɪᴀɴ ᴍᴇᴄʜᴀɴɪᴄs.❤ |
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| 20. |
A tree is broken at a height of 4m from the ground. Its top touches the ground at a distance of 3m from the base of the tree. Find the original height of the tree. |
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| 21. |
Two blocks of masses '3m' and '2m' are in contact ona smooth table. A force P is first applied horizontally on block of mass 3m' and then on mass '2m'. The contact forcesbetween the two blocks in the two cases are in the ratio. |
| Answer» TION:f 1 =(2m)(acc.) =2m× 5mP = 52 P f 2 =(3m)(acc.) =3m× 5mP = 53 Pf 2 f 1 = 3P/52P/5 = 32 | |
| 22. |
32. The velocity v of a particle is given by the equation v=61 – 68, where v is in m/sec and t is time in seconds then:(A) at 1 = 0, velocity is maximum(C) minimum velocity is zero2(B) at 1=3velocity is minimum(D) minimum velocity is –2 m/sec |
| Answer» GIVEN v=6t 2 −6t 3 . DIFFERENTIATING v w.r.t. t, we have Dtdv =12t−18t 2 .Putting dv/dt=0, we will get the values of t at which v is maximum or minimum. Therefore,12t−18t 2 =0⇒t=0,2/3sTo the distinguish between points of maxima and minima, we need the second DERIVATIVE of v.dt 2 d 2 v =12−36tNow dt 2 d 2 v ∣ t=0 =12>0.So t=0 is a point of minima.dt 2 d 2 v ∣ t =2/3s=12−36× 32 =−12<0So t=2/3s is a point of maxima.Hence, the minimum value of v is 0 MS −1 (by putting t=0 s in v).The maximum value of v is6× 94 −6× 278 = 38 − 916 = 98 ms −1 (by putting t= 32 s in v).Answered Bytoppr61 ViewsHow satisfied are you with the answer?This will help us to improve betteranswrGet Instant Solutions, 24x7No Signup requiredgirlMore Questions by difficultyEASYMEDIUMHARD | |
| 23. |
Observe around you and find three examples for the followinga) Increasing pressure |
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Answer» pressure can be INCREASED by increasing the force on a PARTICULAR area such as in our daily usepressure cooker boilerwhen we INSERT a iron nail in a wallpls mark me as BRAINLIEST really required |
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| 24. |
Resistance of two resistors is measured as( 20+- 0.2 ) ohm and (40+-0.2) ohm . the maximum absolute error in their series combination will be a.0.2 ohmb. 0.1 ohmc. 0.6 ohmd.0.4 ohm |
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Answer» (d) 0.4 ohmExplanation:In general, the rule for series circuit is that resistances add up in series. LET US say that we have three resistors Ra, Rb and Rc, then R = Ra + Rb + Rc Now if they are in parallel circuit, then net resistance reduces. Its formula is; 1/R = 1/Ra + 1/Rb + 1/Rc Now as per GIVEN information, when the resistors each having an error of -+0.2 are connected in series, then the maximum ABSOLUTE error would be =0.2+0.2=0.4 |
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| 25. |
1. A simple pendulum completes 40 oscillations in one minute. Find its (a) frequency, (b) time period. |
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| 26. |
Please the tell the answer the urgent |
| Answer» TION:BHAI pic CLEAR nhi hai phir se clear pic do. | |
| 27. |
Define lens and mention its uses |
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Answer» ɪs ᴀ ᴛʀᴀɴsᴍɪssɪᴠᴇ ᴏᴘᴛɪᴄᴀʟ ᴅᴇᴠɪᴄᴇ ᴛʜᴀᴛ ғᴏᴄᴜsᴇs ᴏʀ ᴅɪsᴘᴇʀsᴇs ᴀ ʟɪɢʜᴛ ʙᴇᴀᴍ ʙʏ ᴍᴇᴀɴs ᴏғ ʀᴇғʀᴀᴄᴛɪᴏɴ. ʟᴇɴsᴇs ᴀʀᴇ ᴍᴀᴅᴇ ғʀᴏᴍ ᴍᴀᴛᴇʀɪᴀʟs sᴜᴄʜ ᴀs ɢʟᴀss ᴏʀ ᴘʟᴀsᴛɪᴄ, ᴀɴᴅ ᴀʀᴇ ɢʀᴏᴜɴᴅ ᴀɴᴅ ᴘᴏʟɪsʜᴇᴅ ᴏʀ ᴍᴏʟᴅᴇᴅ ᴛᴏ ᴀ ᴅᴇsɪʀᴇᴅ sʜᴀᴘᴇ. ᴀ ʟᴇɴs ᴄᴀɴ ғᴏᴄᴜs ʟɪɢʜᴛ ᴛᴏ ғᴏʀᴍ ᴀɴ ɪᴍᴀɢᴇ, ᴜɴʟɪᴋᴇ ᴀ ᴘʀɪsᴍ, ᴡʜɪᴄʜ ʀᴇғʀᴀᴄᴛs ʟɪɢʜᴛ ᴡɪᴛʜᴏᴜᴛ ғᴏᴄᴜsɪɴɢ.❤ |
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| 28. |
Draw a diagram of pitches and high pitches of sound |
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Answer» by sghmcfuludrororo R EI page er E ei rokom EK of oeeeoeororror r madhava order ero tor |
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| 29. |
Thickness of a cylinder measured using a screw gauge of least count 0.01 cm is found to be equal to 0.80 cm. Thepercentage error in measurement isa.2.5%b.1.25%c.5%d.0.5% |
| Answer» SS of a cylinder measured using a screw GAUGE of LEAST COUNT 0.01 cm is found to be equal to 0.80 cm. The percentage ERROR in measurement is 2.5% | |
| 30. |
What do you mean by frame of refrance and what is the condition for a frame to be inertail |
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Answer» tion:An inertial frame of reference in classical PHYSICS and special relativity POSSESSES the property that in this frame of reference a body with zero net force acting upon it does not ACCELERATE; that is, such a body is at rest or MOVING at a constant velocity. |
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| 31. |
a force f is applied on an object and the object undergoes a displacement s in direction of force. does the work done on an object depend on the time taken by the object for the given displacement |
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Answer» ft of the same thanks kaku of the same number as soon to DISCUSS your requirements with us and we will need the same thanks kaku the number of devices are the same thanks mama I am not a ATAL BIHARI vajpeyi the number of devices are you doing today my love to see you soon and we will be in the same thanks kaku of the same number as I have been working with the following URL of devices are not filtered the number one general the number one general the number one priority MAIL express delivery AVAILABLE the same number as I am not sure how long will it be in touch with you to the 7ggrryrygeue1 |
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| 32. |
Feroz and saniya go to school on their bicycle both of them start at the same time from their home but take diffetent times to reach the school althought they follow the dame route. Table show the distance travelled by them in difffferent times. Time. Distance t firoz. sanya8:00am. 0. 08:50am. 1.0. 0.88:10am. 1.9. 1.68:15am. 2.8. 2.38:20am. 3.6. 3.08:25am. - 3.6Please don't SPAM me I can report your answer |
| Answer» TION:MARK me as BRAINLIEST .......... | |
| 33. |
What is the difference between a scalar and a vector? |
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Answer» The quantity is either a VECTOR or a scalar. These two categories can be distinguished from ONE another by their distinct definitions: Scalars are quantities that are FULLY DESCRIBED by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction.Explanation:i HOPE this helps you |
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| 34. |
Why do you spread your feet further apart when standing riding vehicle? |
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Answer» tion:You spread your feet further apart when standing on a bumpy-riding bus because this widens your support BASE. Since you will FALL over if your CG is not directly over your support base, a wide base MAKES you more stable. |
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| 35. |
3.Calculate T, and T, for the following diagram.TT2 kg2 kgТ.2 kg |
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Answer» do in this QUESTION |
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| 36. |
Why v is taken as negative for finding the magnification ? |
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Answer» tion:we we second negative because the POSITION of object is BACKWARD to the LENS it is taken negative DUE to sign conventions |
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| 37. |
A horizontal force of 1200 gf is applied to a 1200 g block , which rest on a horizontal surface. If the coefficient of friction is 0•2, find the acceleration produced in the block . |
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Answer» Horizontal forceF=1.2kgwtF 1 =1.2×gNow frictional forceF=umgF=0.3×1.5×gF=0.45gLet ACCELERATION produced in the BODY be a.Now we haveF 1 −F=ma1.2g−0.45g=1.5a0.75g=1.5aa= 2g a=4.9m/s 2Explanation:PLEASE MARK me BRAINLIST |
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| 38. |
Calculate the minimum pressure required to force the blood from the heart to the top of the head (a vertical distance of 0.5 m). Given density of blood 1040 kg m3. Neglect friction. |
| Answer» 15 PASCAL. PLEASE MARK me as BRAINLIEST | |
| 39. |
Unit Determine A, B, C, D parameters of a 3-phase, 50 Hz, 400 km long line having perimpedance of (0.15 + j0.78) ohm per km and a shunt admittance of j5.0 x 10 ohm per[15] |
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Answer» noneExplanation:...... |
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| 40. |
A stone is dropped from the top of the tower of height 100m. the stone penetrates in the sand on the ground through distance of 2m. calculate the retardation of the stone. |
| Answer» MAGNITUDE of Retardation of stone = 490 m/s²Explanation:Given:Stone is dropped from the top of the tower so Initial velocity = 0Height of tower = 100 m Stone penetrates in the sand on the ground through a distance = 2 m We will take acceleration due gravity during the motion = 9.8 m/s² To find:Retardation of the stone =?Formula required:Third equation of motion2 a s = v² - u² [ Where v is representing final velocity, u is representing initial velocity, a is acceleration and s is distance covered ] Solution:USING third equation of motion to calculate final velocity of the stone when it will reach the ground (v=?)[ Taking initial velocity zero; final velocity v; acceleration equal to acceleration due to gravity; and distance covered 100 m ]→ 2 a s = v² - u²→ 2 ( 9.8 ) ( 100 ) = v² - ( 0 )²→ v² = 1960 → v = √1960 m/sNow, Using third equation of motion to calculate retardation of the stone when it penetrates in the sand.[ Taking initial velocity equal to Final velocity of stone when it reaches the ground that is √1960 m/s; Taking final velocity equal to zero in this case because STONES is COMING to rest; Let, acceleration of stone be a ; and distance covered 2 m ]→ 2 a s = v² - u²→ 2 ( a ) ( 2 ) = ( 0 )² - ( √1960 )²→ 4 a = -1960→ a = -490 m/s²Therefore, Acceleration of stone WOULD be -490 m/s².[ Negative sign represent that stone is retarding ] | |
| 41. |
The edge of an cube is measured by using vernier calliper |
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| 42. |
What is ohm's law please answer my question |
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Answer» aw is a formula used to calculate the relationship between voltage, current and RESISTANCE in an electrical circuit. To students of ELECTRONICS, Ohm's LAW (E = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists. E = I X R. |
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| 43. |
Molecular formula of calcium carbonate is caco3. (1) how many moles are in Avogadro molecules |
| Answer» EXPLANATION:i can not WRITE the ANSWER with my KEYBOARD so DEAL with it. | |
| 44. |
The image formed by a convex mirror of focal length 30 cm is quarter of the object. What is the distance of the object from the mirror? |
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Answer» The ANSWER to the question is 90 CM i.e the object distance is 90 cm from the MIRROR. CALCULATION: As per the question, the focal LENGTH of the convex mirror f = 30 cm. The magnification of the IMAGE m = We are asked to calculate the object distance [u]. As per the sign convention for reflection, the measurements taken along the direction of light is taken as positive and its reverse is taken as negative. The transverse measurement above the principal axis is taken as positive and below the principal axis is taken as negative. Hence, the focal length of the convex mirror f = +30 cm. The image formed by a convex mirror is virtual and erect. Hence, the magnification will be positive. Hence, magnification m =+1/4 = +0.25 The relation between focal length, magnification and object distance is given as - m= f/f-u = m-1 × f m = 0.25-1 × (-30) 0.25 = -90 [ans] Here, the negative sign is due to the fact that object distance is measured opposite to the direction of light. |
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| 45. |
Why do we need to differentiate impulse here pls explainn |
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| 46. |
A rail road car of mass 2 × 10⁴ kg moving with a speed of 5 m/s collides and couples with three other coupled rail road cars, each of the same mass as the single car and moving in the same direction with an initial speed of 2 m/s. (a) What is the speed of the four cars after collision? (b) How much energy is lost in the collision? |
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Answer» vohtsitslhcoudydjvlct8djvugydyd |
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| 47. |
hii good evening bhai kese ho bhoot enjoyment hua aj yaar aapko hi bol raha hu bhai abi ta follow and unfollow kya tha |
| Answer» HI what's up how are you PLEASE MARK me as BRAINLIEST | |
| 48. |
If dice is bearing numbers 0 to 5 on 6 faces. What is the probability of getting 6 on an upper face? step by step explanation |
| Answer» HLO DEAR .................. | |
| 49. |
⏩Give reason; Astronauts cannot talk to each other in space. ❎Dont spam anyone ❎ |
| Answer» SOUND travels when there is a medium. In space there no medium so sound cannot TRAVEL in space. So the two ASTRONAUTS cannot talk to each other in space WITHOUT the use of SPECIAL devices. | |
| 50. |
Can a practicle rotate without experiencing a torque ?explain |
| Answer» TION:an object that is not ROTATING has no net torque, but an object rotating at constant angular velocity also has no angular acceleration, and therefore no net torque acting on it . ... Newtons first law tells US that an object remains at rest or at a constant velocity UNLESS it is ACTED upon by a force. | |