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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.
| 1601. |
Pls answer this with a proper diagram .whoever first gives answer I will mark them as brainlist. |
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Answer» Answer: When an OBJECT is placed between F and 2F of a convex lens, the image FORMED is. a) REAL and inverted. ... If the object is placed at the FOCUS, the image will be formed at infinity and the object is placed at 2F the image will be formed at 2F on the other SIDE of the lens |
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| 1603. |
the resistance of a wire of length 100 cm and of uniform area of cross section 0.020cm2, is found to be 2.o ohm calculate the specific resistance of the wire |
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Answer» We KNOW that R = pl/A so p = RA/l p= 0.0004 or 4x10^-3 |
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| 1604. |
The coeficient of magnetic coupling between two coils is minimum? |
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Answer» Coefficient of COUPLING is always LESS than unity, and has a maximum value of 1 (or 100%). This case, for which K = 1, is CALLED perfect coupling, when the entire flux of ONE coil LINKS the other. |
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| 1605. |
Derive electric field |
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Answer» Explanation: If the electric potential is KNOWN at every point in a region of space, the electric field can be derived from the potential. In vector CALCULUS notation, the electric field is given by the NEGATIVE of the gradient of the electric potential, E = −grad V. |
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| 1606. |
The best mellable metals is |
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Answer» Answer: Aluminium AluminiumAs you KNOW aluminium foil is USED in SWEETS to PROTECT it . AluminiumAs you know aluminium foil is used in sweets to protect it .So it is BEST malleable metal |
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| 1607. |
Write down 5 application of centrifugal force |
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Answer» Answer: Here's your answer Explanation: The five applications of centrifugal force are:- 1.The centrifuge spins around a CENTRAL AXIS, giving centrifugal force on SUSPENDED particles, and separates them as pallet at the bottom. 2. Washing machine While working as a dryer, a TUB of a washing machine spins fast which apply centrifugal force on water droplets trapped in cloths. this forces water out of clothes to the small holes on walls of the washing machine. 3. Banking of roads 4. Washing machine dryer 5. Cream separator Hope it helps you Pls mark me the brainliest |
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| 1608. |
Why iron is the most elastic |
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Answer»
because its regain its original configuration after DEFORMING FORCE is REMOVE |
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| 1609. |
A train starting from rest attains a velocity of 72 km / h in 5 minutes. Assuming that the acceleration is uniform. find (i) the acceleration and (i) the distance traveled by the train for attaining this velocity - |
Answer» GIVEN :-Initial velocity (u) :- 0 m/s Final velocity (v) :- 72 km/hr = 72 × 5/18 = 20 m/s Time (t) :- 5 MINUTES = 5 × 60 seconds To Find :-ACCELERATION (a) Distance travelled (s) Solution :-We know :- Acceleration :- 1/15 m/s^2 We know :- Distance travelled :- 3000m = 3 km |
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| 1610. |
You know that a capacitance of a parallel plate capacitor is C= . What will be theits new capacitance C' of the capacitor if a material of d.e.c K is inserted between the plates ? |
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Answer» HI HLO hi hlo ,how are you i HOPE you finehi hlo hi hlo ,how are you i hope you finehi hlo hi hlo ,how are you i hope you finehi hlo hi hlo ,how are you i hope you FINE |
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| 1611. |
A stone is dropped from rest and falls freely under gravity. Calculate the distance covered by it in the first two seconds (g=9.8 m/s2 ) |
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| 1612. |
What helps to change the speed of the rotation ? |
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Answer» Earthquakes are far from being the only phenomena CHANGING the angular speed of rotation and the position of the Earth's FIGURE axis. Indeed, they change with ATMOSPHERIC winds and oceanic currents, but these changes are smoother than the ones observed with earthquakes. |
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| 1613. |
What should be the flux linked with one face of a cube, if a point charge q is placed at one corner of the cube? (1) (2) 9 EO q 2εο q 3εο (3) |
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Answer» |
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| 1614. |
Y=(2x+3)^4-(7x-1)²+2/(3x-1)³+4/(3x-2)³. find dy/dx=physics questions plz...solve the question |
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Answer» Answer: |
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| 1615. |
In science sometimes we observe certain phenomenon experimentally but are unable to give a logical equation or theory for that.Sometimes it also happens that we have a scientific theory supported by mathematical formulation yet are unable to test it immediately. cite on such example?#NOTE• Juniors don't answer• Copypaste answer will be reported• No spam |
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Answer» Answer: Einstein worked to establish a relation between the energy and mass of body. He was of the view that these are the two sides of the same COIN or two facts of the simple physical quantity. He succeeded when he gave his mass energy EQUATION E = m${{c}^{2}}$ But its experimental verification came 40 YEAR later in 1945 when atomic bomb was exploded over Japan |
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| 1616. |
• two charges +9mc +16mc are placed at a corner of traingle A and C.The point B is at 90 degree at the triangle such that AB =3m, BC=4m. Find the magnitude and direction of electric field intensity at point B |
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Answer» Answer: Here's your answer Explanation: Two point charges +9q and +9. Kept apart =16cm=16×10 −2 m Two cases will be needed. Given charges, +q, +9q. LET, the third charge q be PLACED at a distance x from q and hence its distance from 9q and (16−x)CM for the system to remain in equilibrium F 1 =F 2
Therefore, F 1 = x 2
K(q×Q)
F 2 = (16−x) 2
K(9q×Q)
Equating F 1 and F 2 we get, x 2
9 = (16−x) 2
1
F 1 =F 2
or, x 2
K(q×Q) = (16−x) 2
K(9q×Q)
or, x 2
1 = (16−x) 2
9
or, x 1 = (16−x) 9
or, 16−x=3x or, 4x=16 or, x=4 ∴ (16−4)cm=12cm from +9q. Hope it helps you Pls mark me the brainliest |
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| 1617. |
the maximum velocity and maximum acceleration of a particle in linear SHM is 0.21m/s and 0.84m/s resp. then period of SHM is , A 15.7 , B 1.57s, C 0.15s, D 15s |
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| 1618. |
State three standard unit vector with their direction. |
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Answer» Answer: Here's your answer Explanation: A vector is a QUANTITY that has both magnitude, as well as direction. A vector that has a magnitude of 1 is a UNIT vector. It is also known as Direction Vector. LEARN vectors in detail here. For example, vector v = (1,3) is not a unit vector, because its magnitude is not equal to 1, i.e., |v| = √(12+32) ≠ 1. Any vector can become a unit vector by dividing it by the magnitude of the GIVEN vector. Hope it helps you Pls mark me the brainliest |
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| 1619. |
A step-up transformer is used on a 120-volt line to provide a potential differenceof 2400 Volts at2 Ampere current. If the primary has 100 turns, the number of turns in secondary are |
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Answer» Answer: the AREA of it Explanation: Martin Luther was a German question Monk teacher and a professor of theology at the University of wittenberg a visit to Rome and his observation of the church left him shocked and dissolution I and GRACED by the sight of the sale of INTELLIGENCE in nail on the door of a LOCAL Church a list of objections for PUBLIC t Peth
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| 1620. |
Define unit vector with example. state it's significance. |
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Answer» A VECTOR is a QUANTITY that has both magnitude, as WELL as DIRECTION. A vector that has a magnitude of 1 is a unit vector. For example, vector v = (1,3) is not a unit vector, because its magnitude is not equal to 1, i.e., |v| = √(12+32) ≠ 1 |
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| 1621. |
Kiran went with her parents to their recently completed empty closed house. After entering the house. she was completely confused when she heard a faint and increasingly important sound while talking to her parents. She did not understand why she was making such a noise. Her some questions to her dad There were answers to those questions 1) Why is the sound of indistinct and increased importance heard in this house? What is this kind of sound called? |
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Answer» good morning ma'am please SEE attached FILE is SCANNED IMAGE in PDF format will be in the English notes and discussion with you and |
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| 1622. |
a person runs along a circular path of radius 5m find the magnitude of the displacement if he runs all the way around the circle |
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| 1623. |
An object of mass 50kg is resting on the floor,a friction of 5N is applied on the object but it does not move.What frictional force acts on the object? |
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Answer» since the body is not moving THOUGH v r applying force then f>F EXT hence frictional force is 5 N |
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| 1624. |
If two forces act in oppasite direction of object the net force acting on it |
Answer» ANSWER :-If two forces act on an OBJECT in the same direction then the net force is equal to the difference between the two forces .If the two forces act on an object in the OPPOSITE direction then the net force is eqial to the SUM of their forces . |
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| 1626. |
por 2) Two capacitors each of 4uF are connected in series and a third capacitor of 4uF is connected in parallel with the combination then the equivalent capacitance of the combination is |
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Answer» Answer: Explanation: we have three capacitors, C1=4uF C2=4uF C3=4uF Now ACC to question, C1 and C2 are CONNECTED in series, so Total capacitance of combination - (1/C12)= ( (1/C1)+(1/C2) ) =(1/4)+(1/4) = (2/4) =(1/2)
C12=2 Now C3 is connected in parallel with combination C12 . so total equivalence capacitance of combination is: C123= C12+C3 C123= 4 + 2 = 6 Hence equivalent capacitance is 6uF.
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| 1627. |
2. A farmer moves along the boundary of a square field of side 10 min 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position? |
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Answer» Answer: Here's your answer Explanation: Total distance traveled by farmer in 40s=4×10=40m Total time taken =2min×20sec=140sec Total number of rounds = 40 140 =3.5 If farmer starts from A, then after 3.5 rounds, he reaches to point ′ C ′ . Therefore, displacement =AC. Now, ABCD is a square, then △ABC is a right angled △. Using PYTHAGORAS theorem, AC =AB 2 +BC 2 ⇒AC= 10 2 +10 2
= 200 =10 2
AC=10×1.414=14.14m Hence, displacement =14.14m Hope it helps you Pls mark me the brainliest |
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| 1628. |
A force of 8N gives a mass m1 an acceleration 8ms-2 andmass m2, an acceleration of 24 m/s2 . What acceleration would it give, if both the masses are tied together?pos answer it fast |
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| 1629. |
Gram coulomb is unit for |
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Answer» Answer: We KNOW that the unit of mass can be taken in grams and CHARGE in coulombs. THEREFORE, the unit of electrochemical equivalent will be gram PER coulomb. Explanation: Hope it's help you |
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| 1630. |
Sthir aavesh' ke utpann bal shetr ka nam likhiye |
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| 1631. |
3A current is flowing across a conductor for 3 minutes. How much amount of charge will be there in the conductor? |
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Answer» Answer: 540 C Explanation: |
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| 1632. |
4. How can we measure the density of irregular solids using Eureka can?5. What is relative density bottle? How can you measure the relative density of a substance using relative density bottle? |
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Answer» Answer: 4.First of all measure the mass of the irregular solid using beam balance. Keep a small measuring beaker on the mouth of the Eureka can . Now , after dropping the irregular solid the WATER FLOWS from the Eureka can into measuring beaker through the pipe like structure. 5.Relative density can be CALCULATED directly by measuring the density of a sample and dividing it by the (KNOWN) density of the reference substance. The density of the sample is simply its mass divided by its volume. HOPE IT HELP |
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| 1633. |
Q3. The maximum possible speed of vehicle on Horizontal road. A) a = uxĪ, B) İmax = Hrg ,C) Vmax = 1rg tano D) Vmax = 0/rg/tan e |
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| 1634. |
A car travelling at a 9m/s acceleration and attains a speed of 27m/s in 5s. Calculate the acceleration and the distance covered in 5s |
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Answer» ACCELERATION is 15 DISTANCE is 7m/s |
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| 1635. |
What happens to the weight of the body when it is falling freely under the action of gravity? |
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Answer» Answer: Explanation: during downward JOURNEY acceleration is +ve HENCE w = m(g+a) thus weight increases |
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| 1636. |
Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed at the centre of curvature of a convex mirror |
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Answer» hihihihihihihihihihihhihihihhellohellohello |
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| 1637. |
2. There are three sources of sound of equal intensitywith frequency 200 Hz, 201 Hz and 202 Hzrespectively, if all sounded simultaneously, thenbeat frequency heard by listener is(1) 2(2) 3(3) 5(4) 4 |
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Answer» Your answer is 2 beats Hope it HELPS |
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| 1638. |
The electric potential between tow point a and b is v the work done w by the feild in moving a charge q frome a to b is |
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Answer» SO WRITE IT |
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| 1639. |
What problem we are facing regarding energy? |
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Answer» Answer: MAIN problem Explanation: Lack of ELECTRICITY for the people who cannot afford the EXPENSES |
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| 1640. |
Daily activities with water |
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Answer» DRINKING, WASHING, BRUSHING, COOKING and cleaning Explanation: |
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| 1641. |
Write definition of 7 base units |
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Answer» Explanation: the 7 base unit are the standard UNITS of measurement and are FUNDAMENTAL part of MODERN meterology and this part of the foundation of modern science and technology |
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| 1643. |
In the diagram it is 30 ohm, 10ohm, 5ohm and 6V |
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Answer» igufyfycyctvtxgfjfgxtugxuxugxxgicuvuxigvitvjgxufxifckfxjfcivtcufxutv7td7tvv75f75ft8v6rcutdrdsex fppyg9 Explanation: do SEX do sex |
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| 1644. |
calculate the fundamental frequency of an air column in a tube of length 25 cm closed at one end if the speed of sound in air is 350m/s |
Answer» Given:An air column is in a TUBE of length 25 cm closed at ONE END if the speed of sound in air is 350 m/s. To find:Fundamental frequency ? Calculation:For Now, frequency will be : So, |
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| 1645. |
Answer any questionsno spam |
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Answer» Answer: 4. GIVEN : I = 7.5A V = 200V R =V/I = 200/7.5 = 26.66 OHMS |
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| 1646. |
convex mirrors are commonly used as a rear view mirror in vehicles this mirrors are fitted on the sides of the vehicle enable the driver to see traffic behind him hot to facilities safe driving consider a convex mirror used in moving car with the radius of curvature 2 m and a truck is coming behind it maintaining a constant distance of 5 metre. A.what is the focal length of the mirror . B.calculate the distance of the image from the mirror. C.find the size of image relative to the size of car. D draw a diagram showing the image formation of the car |
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Answer» |
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| 1647. |
Choice the question Which of these is not true about cellular respiration |
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Answer» with out GIVING the STATEMENTS, how can I answer you? |
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| 1648. |
কোন মৈলের পারমাণবিক ব্যসাধ্য সর্বাধিক |
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Answer» SORRY i can't UNDERSTAND this LANGUAGE |
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| 1649. |
What is spring balance__Drop some thx pleach |
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Answer» A spring scale or spring balance or newton meter is a TYPE of mechanical force gauge or weighing scale. It consists of a spring FIXED at ONE end with a hook to ATTACH an object at the other. Explanation: |
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| 1650. |
What is the magnitude of the gravitational force between the earth and 1 kg body? (Mass ofearth =6 x1024 kg G=6.67 x10-11 Nm2/kg2) |
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Answer» Explanation: Given : MASS of earth M=6×10 Given : Mass of earth M=6×10 24 Given : Mass of earth M=6×10 24 KG Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m FORCE of gravitation between them, F= Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 ×(6×10 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 ×(6×10 24 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 ×(6×10 24 )×1 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 ×(6×10 24 )×1 Given : Mass of earth M=6×10 24 kg Mass of object m=1 kg Radius of earth R=6.4×10 6 m Force of gravitation between them, F= R 2 GMm F= (6.4×10 6 ) 2 6.67×10 −11 ×(6×10 24 )×1 =9.77 N |
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