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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 63951. |
What do you mean by the word Abiotic ????? |
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Answer» factors refer to non-living physical and CHEMICAL elements in the ECOSYSTEM. ... Examples of abiotic factors are water, air, soil, SUNLIGHT, and minerals |
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| 63952. |
When a convex mirror is held close to the object, is the image formed virtual or real? Also, is it erect or inverted? |
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| 63953. |
Sound takes 2 seconds to travel 3 kilometres in water. What is the speed of the sound in water?a 1.5 m/s b 6 m/sc 1500 m/sd 6000 m/s |
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Answer» m/s.......................... |
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| 63954. |
When a substance having mass 3 kg receives 600 cal of heat, its temperatureincreases by 10'C. What is the specificheat of the substance? |
| Answer» 20 J/kg.cExplanation:mass.3 kgchange in temperature.10 cheat.600kcalspecific HEAT= 600÷3×10 = 20 J/kg.c | |
| 63955. |
المعطTime period definition |
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Answer» period (DENOTED by 'T' ) is the time taken for ONE COMPLETE cycle of vibration to pass a given point. As the frequency of a WAVE increases, the time period of the wave decreases. The unit for time period is 'seconds'.may this help youmark as brainliestfollow me for more answers |
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| 63956. |
To assemble house hold circuit comprising two bulb two (on,off) switch |
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Answer» on EXPLANATION:because the ELECTRICITY is GIVEN. |
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| 63957. |
What is value of G on earth |
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Answer» ✅VALUE of G on Earth is 6.67×10¹¹m/s✔The value of G is same EVERYWHERE. It does not CHANGE from place to place. It is same on all the planets.♥️MARK ME AS BRAINLIST IF THE ABOVE ANSWER HELPS U✌✌✌..... |
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| 63958. |
Permanent magnet are not used in electric fan or electric mixer and grinder why |
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Answer» The reason that PERMANENT MAGNETS are not USED widely is because they are not suited to motors that drive loads with extremely high torques. Also there is little CONTROL over the field PRODUCED by a permanent magnet.Explanation:I think it helps you |
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| 63960. |
Three laws of newton |
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Answer» tion:Every OBJECT in a state of uniform motion will remain in that state of motion unless an external force acts on it.Force equals mass TIMES acceleration For every action there is an EQUAL and opposite reaction.The first LAW, ALSO called the law of inertia, was pioneered by Galileo. |
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| 63961. |
When a red rose flower is observed in a blue light, what colour does the observer see A. Yellow B. Red C. Blue D. Magenta |
| Answer» ANSWER is d) MAGENTA MARK me as brailiedt | |
| 63962. |
A body of mass 1kg is suspended from a string 1m long it is rotated in a vertical circle with a constant speed of 2m/s what is the tension in the string when it is horizontal |
| Answer» BALANCE of the answer is unavailable due to some technical PROBLEMS please come back LATER and COOPERATE with US. | |
| 63963. |
Why the bucket filled slower in the tap of top storey than that of down storey? |
| Answer» F less potential energy gradient The more the height the fast will be WATER flow.. As potential energy DROP is high..thus GETTING more kinetic energy | |
| 63964. |
Observe the following figure AB is light ray travelling liquid air BC and BD are refracted rays ,which is the refracted ray if the liquid taken is benzene? nd which is the refracted ray if the liquid taken is water? ( The absolute refactive index of water and benzene are 1.3 nd1.5) |
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| 63965. |
Describe four branches of physics |
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Answer» al mechanics by newtonRelativity by EINSTEIN QUANTUM physics by PLANK etc Quantum FIELD theory |
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| 63966. |
A uniform line charge of 16nc/m is located along the line defined by y=-2, z=5 find electric field intensity.At the point in z=0 plane |
| Answer» LASS do your bejsjsjnsnsnsnsndnsskskksksndndjjxueudjndmdnxnxndmdmxkdkdj | |
| 63967. |
While talking about Quantum, a question arises that, ∆Quantam = ?? |
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Answer» Δmc²Explanation:QUANTUM PHYSICS is based mainly Einstein's EQUATION |
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| 63968. |
14. A position dependent force F acting on a particle and its force-position curve is shown in the figure,The work done by force from x= 1 m to x = 4 mF(N)20x(m)-20%.(1) 35 J(3) -15 J(2) -20 J(4) 20 J |
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Answer» jffhPE dulsruaarruuaar.hljhffhlUubxkkxkx |
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| 63969. |
An object is placed twice the distance of radius of curvature of spherical mirror a real image is formed.what kind of spherical miiror it is .how do you find whether a real image is formed |
| Answer» SORRY I don't KNOW it ,it will be your HW | |
| 63970. |
(a) A person of mass 'm' is standing in a lift. Find his apparent weight when the lift is(i) Moving upward with uniform acceleration 'a'.(ii) Moving downward with uniform acceleration 'a' (< g).(iii) falls freely.(b) Explain why, it is easier to pull a lawn mover than to push it. |
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Answer» a) i)When lift is moving up, R-mg=ma R=m(a+g)ii)When lift is moving down, mg-R=ma R=m(g-a)iii)When lift is falling FREELY, a=g R=m(g-g) =0 ie, the body is weightless.b) Taking equation R=m(g-a) into account, The normal reaction(force) is GREATER when we pull a LAWN. Please mark it brainliest |
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| 63971. |
What do you mean by the word nervous ???? |
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Answer» Explanation:☆nervous•Is an adjective•In UK /ˈnɜː.vəs/ US /ˈnɝː.vəs/•nervous adjective (WORRIED) ●worried and anxious:EXAMPLES:-Do you feel/get nervous during exams?I was too nervous to speak.She's ALWAYS been nervous around dogs.I was very nervous about DRIVING again after the accident.He had/was of a nervous disposition. |
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| 63973. |
why is the conductivity of n- type semiconductor greater than that of p- type semiconductor even when both of these have same level of doping ? |
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Answer» (1) In a p-type semiconductor, holes are majority charge carriers.(2) Holes behave as positive charges. When a p-type semiconductor is connected to a battery, holes are attracted TOWARDS the negative terminal of the battery.(3) Holes are transported, when there is movement of electrons.(4) The DRIFT speed of these electrons in a p-type semiconductor is less than that in an n-type semiconductor. Also the mobility of the holes is less than that of the electrons.(5) The electrical conductivity depends on the mobility of charge carriers. HENCE, the conductivity of an n-type semiconductor is greater than that of a p-type semiconductor EVEN when both of these have the same level of doping. |
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| 63974. |
Please tell about functions electromagnet explain |
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Answer» An electromagnet is a device that sends electricity through a coil of WIRE to produce a magnetic field. This leads to a MAGNET that can be controlled - TURNED on and off with the flip of a switch, or increased or decreased in STRENGTH. The coils are often wrapped around a regular magnet to MAKE it stronger. |
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| 63975. |
Refractive index of 2media are 1.5 &1.7 calculate velocity of light in this 2 media |
| Answer» HEY MATE MAYBE the ANSWER is 2 | |
| 63976. |
Three charges of equal magnitude are placed at corners of equilateral triangle . Force between two charges is F , the net force on each charge will be.....? |
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Answer» tion:TWO repulsive FORCES on particle 1 adds up to to FORM a repulsive FORCE |
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| 63977. |
State the relation between radius of curvature and focal length of spherical mirror |
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Answer» F=R÷2Explanation:FOCAL LENGTH is HALF of RADIUS of CURVATURE |
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| 63978. |
Working of Periscope |
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Answer» A periscope WORKS by using two mirrors to bounce light from one PLACE to another. A typical periscope uses two mirrors at 45 degree angles to the direction one desires to see. The light bounces from one to the other and then out to the PERSONS EYE. |
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| 63979. |
The energy of an atom in ground state is -4.9ev . The ionisation energy of this atom is |
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| 63980. |
certain force acting on 20 kg mass changes its velocity from 5m/s to 2 m/s. Calculate the work done by the force to change velocity |
| Answer» TION:w=m×vw=20×4w=80ok its is CORRECTOR NOI don't knowlike mebye | |
| 63981. |
Plusone physics chapters weightage |
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Answer» pls COVER complete SYLLABUS KNOWLEDGE is IMPORTANT than marks |
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| 63982. |
The voltage produced by a model solar cell when explosed to sunlight |
| Answer» RY RAY of LIGHT from it. | |
| 63983. |
How sound produced in a school Bell |
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Answer» tion:When the SCHOOL bell vibrates, it forces the adjacent particles in air to vibrate. ... As the bell continues to MOVE forward and backward, it produces a series of COMPRESSIONS and rarefactions. This MAKES the SOUND of a bell propagate through air. |
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| 63985. |
A body of mass 10 kg is acted on by a force F which varies with time t as shown in graph. Find net momentum gained by it at the end of 8s(A) 37.5 kg m/s (C) 75 kg m/s(B) 10 kg m/s (D) 85.5 kg m/sGraph is above please answer as I have exam near ....please help me out As soon as possible.. |
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Answer» A-37.5 kg m/sExplanation:For FINDING momentum, we must FIND AREA under F-t graph. In the given graph, area is 37.5 . So ANSWER is 37.5 |
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| 63986. |
A certain far-sighted person cannot see objects closer to the eye than 60cm clearly .Calculate the power of a converging lens to enable a man to see an object at 20cm |
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Answer» For the person's range of clear vision to be equal to that of average MAN, the image of an object kept at the LEAST distance of DISTINCT vision, that is, 0.25 m, must be at the least distance of distinct vision of far-sighted man by the correcting lens.Thus usingThus , POWER of the lens is , |
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| 63987. |
Package of mass 50 kg is raised to the vertical height of 2.5 in 5 seconds calculate the power needed to raise the package. |
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Answer» p=(MGH)/TP=(50*10*2.5)/5P=250WExplanation:power is the total AMOUNT of workdone within a PERIOD of time i.ePower=Workdone/time |
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| 63988. |
The copper strips in a slide wire bridge are thick because |
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Answer» PHYSICSAnswer the following :(a) Why are the connections between the resistors in a meter bridge made of thick copper strips?(b) Why is it generally preferred to obtain the balance point in the MIDDLE of the meter bridge wire?(c) Which material is used for the meter bridge wire and why?ORA RESISTANCE of R Ω draws current from a potentiometer as shown in the figure. The potentiometer has a total resistance R 0 Ω. A voltage V is supplied to the potentiometer. Derive an expression for the voltage across R when the SLIDING contact is in the middle of the potentiometer.questionDecember 26, 2019avatarVijaya SpandanaSHAREANSWER(a) The resistivity of copper wire is very low. The connections are made of thick copper wires to minimize the resistance of connecting wires. Because the connection resistance have not been accounted in the FORMULA, (v Resistance is inversely proportional to cross-sectional area, so thick wire has low resistance).(b) The balance point is obtained in the middle of the meter bridge wire so as to increase the sensitivity of the meter bridge and there by no deflection in the galvanometer.(c) Alloys, such as manganin or constantan are used for making meter bridge wire due to their low temperature coefficient of resistance and high resistivity. Due to which the resistance of the wire does not change with increase in temperature of the wire due to flow of current. |
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| 63989. |
| 24 सेमी वक्रता त्रिज्या वाले अवतल दर्पण के सामने 3 सेमी की। दूरी पर एक मोमबत्ती रखी है। मोमबत्ती के प्रतिबिम्ब की स्थितिज्ञात कीजिए। [2014] [ उत्तर : दर्पण के पीछे 4 सेमी की दूरी पर ] |
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Answer» snssmskskkskskskdksksmsmmsmsmsm |
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| 63990. |
What is the angle of deviation for a Ray which incident with an angle 45° on the plane mirror |
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| 63991. |
Two point objects of mass 2x and 3x are separated by a distance r. Keeping the distance fixed mass should be transferred from 3x to 2x. so that gravitational force between them becomes maximum |
| Answer» F = K (3x - m) (2 x + m) where K = G / R^2 and m is the mass transferreddF / DM = K d (6 x^2 + x m - m^2) / dm = 0 to find maximumx - 2 m = 0 So m = x / 2 | |
| 63994. |
the temperature recorded by the Celsius thermometer and Fahrenheit thermometer are numerically equal what is the temperature of the body |
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Answer» I am not sure if you have any questions or NEED any further INFORMATION PLEASE contactExplanation:I am not sure if you have any questions or need any further information please CONTACT hhhhww |
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| 63995. |
State and prove work energy theorem |
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Answer» The WORK DONE on a body is EQUAL to change in KINETIC energyie, Work done=Final K.E-Initial K.EPlease mark it BRAINLIEST :) |
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| 63996. |
Question 1 If a gas at 25.0 °C occupies 5 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 4 atm? Group of answer choices a.)5L b.)20L c.)1.25L d.)9L e.)6L Question 2 A gas occupies 20 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 80.0 mm Hg? Group of answer choices a.)60L b.)2L c.)4L d.)10L e.)20L Question 3 What needs to be true about the temperature of a gas to apply boyle's law? Group of answer choices a.)It needs to increase in temperature b.)Temperature doesn't matter c.)It needs to decrease in temperature d.)Temperature needs to stay the same Question 4 What pressure is required to compress 200 liters of air at 1.00 atmosphere into a cylinder whose volume is 20.0 liters? Group of answer choices a.)20 atm b.)220atm c.)10atm d.)1 atm e.)4000amt Question 5 A gas occupies 60 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 60.0 mm Hg? Group of answer choices a.)60L b.).666L c.)40L d.)100L Question 6 If the starting pressure of a gas is 100 atm and it has a volume of 5 ml then what would the volume be if the pressure was lowered to 1 atm? Group of answer choices a.)105ml b.)20ml c.)500ml d.)100ml e.)95ml Question 7 If the pressure pushing in on a gas doubles what would happen to the volume that the gas take up? Group of answer choices a.)It would double b.)It would stay the same c.)It would increase d.)It would cut in half Question 8 ________ Law describes the relationship between pressure and volume. Group of answer choices a.)Gay-Lussac's b.)Ideal c.)Boyles d.)Charles Question 9 In the equation P1V1=P2V2 what do the numbers mean? Group of answer choices a.)1 is the lowest and 2 is the highest b.)1 is the starting and 2 is the ending c.)they tell you haw much pressure and volume there is d.)They don't mean anything Question 10 Which of these is a measure of how much force is applied to an object from gas particle bouncing into it? Group of answer choices a.)Volume b.)Density c.)Pressure d.)Force Question 11 Calculate the decrease in temperature (in Celsius) when 2.00 L at 21.0 °C is compressed to 1.00 L. Group of answer choices a.)147.0 K b.)169,0 K c.)125.0 K d.)110.1 K Question 12 600.0 mL of air is at 20.0 °C. What is the volume at 60.0 °C? (Hint: Convert Celsius to Kelvin first) Group of answer choices a.)670 mL b.)550 mL c.)695 mL d.)682 mL Question 13 A sample of gas occupies 3 L at 300 K. What volume will it occupy at 200 K? Group of answer choices a.)2 L b.)3 L c.)1 L d.)4 L Question 14 A sample of oxygen occupies a volume of 1.6 L at 91°C. What will be the temperature when the volume of oxygen is reduced to 1.2 L? (Hint: Convert Celsius to Kelvin first) Group of answer choices a.)373 K b.)273 K c.)190 K d.)270 K Question 15 ________ Law describes the relationship between temperature and volume. Group of answer choices a.)Ideal Gas b.)Gay-Lussac's c.)Boyles d.)Charles WHOEVER ANSWERS FIRST IS THE BRAINLIEST |
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Answer» L2 idk but it is not 4L3. Idk4. 10atm5. 40L6. 500ml7. It WOULD cut in half8. Bottles9. C10. Pressure11.-126 DEGREES C12. 682ml13. 2L14. 273 k15. Charles |
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| 63997. |
Draw the filling order of atomic orbitals (Moeller chart) diagram when principal quantum number n = 1, 2, 3, 4, 5, 6, 7, 8 and = 0, 1, 2, 3 . |
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| 63998. |
a train of length 100 crossed a v 150 metres long 120 seconds The speed of train is --------- metre per second |
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Answer» of TRAIN = 100mLength of BRIDGE = 150mTotal DISTANCE = 250mTime = 120sSpeed of train = 250/120 = 2.0833m/sCheers! |
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| 64000. |
Extra questions for maria sharapova ncert class 9 |
| Answer» TION: Who is NARRATOR or marai SHARAPOVA?Who is MARIA sharapova? | |