Saved Bookmarks
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. |
What is the relation between linnas-veloury and angulas velocity) |
|
Answer» LINEAR velocity is linear displacement divided by time; ANGULAR velocity is angular displacement divided by time. Therefore, linear velocity is the measure of how fast something is CHANGING in a STRAIGHT line; angular velocity is the measure of how fast something is rotating. |
|
| 2. |
The image above shows a diagram of a reverse fault. What formation will be created on the side of the fault labeled A if the land shifts in the direction of the arrow?A-caveB-valleyC-mountain ridge D-flood plain |
|
Answer» where is the IMAGE...... |
|
| 3. |
What is impulse of force? State its SI unit. |
|
Answer»
#sumedhian ❤❤ |
|
| 4. |
what two variables is acceleration dependent on? what is the relationship between these variables of acceleration? ( i.e. if you increase the variable what happens to the acceleration?) |
|
Answer» F=ma a=F÷M if we INCREASE mass,ACCELERATION decreases |
|
| 5. |
Q 19 both part in the pic |
|
Answer» Answer: 18.4Hz,19.1s,20.π/2s |
|
| 6. |
A bullet of 100 gm is fired from a gun of mass 20 kg with a velocity of 100 m/s. Calculate the recoil of the gun |
Answer» FOLLOW MAH ❣️❣️............ |
|
| 7. |
(ii) Write canonicals of ClO4-.......chemistry |
|
Answer» sorry I don't know Explanation: PLEASE mark my answer as brainlist I will FOLLOW you trust me. |
|
| 8. |
State the properties of lines of force |
|
Answer» Answer: |
|
| 9. |
A partical moves along the circumference of a circle is half cycle. calculate the distance travelled and displacement? |
|
Answer» |
|
| 10. |
A ray of light is incident normally on the surface of water. Its angle of refraction in water is |
|
Answer» the ANGLE of incident ray and the angle of reflected are ALWAYS EQUAL |
|
| 11. |
An elephant and an ant are to be projected from earth into space. whether the velocities required for doing so are the same or different. justify your answer |
|
Answer» Answer: hope it's helpful Explanation: no it's different for elephant and ant bcoz the mass of the elephant is LARGER than that of ant.....so we KNOW that if we have to go against gravity our velocity MUST be larger than that of our mass |
|
| 12. |
The objects which do not produce light and do not move are called non-luminous objects is it correct??? |
|
Answer» Answer: The OBJECTS that do not produce or emit light are CALLED non luminous object. Explanation: But the objects that can't MOVE we can SAY it non living object but not non luminuos object. |
|
| 13. |
A resistance of 2 ohm is connected across one gap of a metre bridge and an unknown resistance greater than 2 ohm is connected across the other gap when these resistance are interchange the balance point shift by 20 cm neglating any connection the unknown resistance is....please guys help me tomorrow is my pre board |
|
Answer» Answer: 3 Explanation: LET the UNKNOWN RESISTANCE be R See the IMAGE. |
|
| 14. |
What is the unit of loundness? |
|
Answer» Explanation: DECIBEL / Hertz (S. I.) MARK it as brainlist and follow me too |
|
| 15. |
Write the basic units of seven basic physical quantity |
Answer» The seven basic units are:-LENGTH -- meter Mass -- kilogram Time-- second TEMPERATURE--kelvin Electric CURRENT-- ampere Luminous intensity--candela |
|
| 16. |
The average velocity of the vehicle is 180 km/hr. It requires 2000 W for operation of 30 min. Find the magnitude of constant tractive eeffort ? |
|
Answer» Sorry I don't know this answer Explanation: |
|
| 17. |
The stages of SQL processing are Parsing, Optimization, Row Source Generation and _____________ . |
|
Answer» translating Explanation: |
|
| 18. |
Magnification of a convex lens is _____ |
|
Answer» Answer: Always the MAGNIFICATION of CONVEX lens is Negative (-ve) Explaination: As , Magnification= Image Distance object Distance As, Image Distance (V)is positive,but Object distance (U) is negative in convex lens, HENCE the magnification gets negative (-ve) Magnification is always negative ( -ve ) .. MARK AS BRAINLIEST |
|
| 19. |
Vidyut avshesh ka matrak likhiye |
|
Answer» विद्युत धारा की SI इकाई एम्पीयर है। ... एम्पीयर की परिभाषा: किसी विद्युत परिपथ में 1 कूलॉम आवेश 1 सेकण्ड में प्रवाहित होता है तो उस परिपथ में विद्युत धारा का मान 1 एम्पीयर होता है। |
|
| 20. |
WHAT IS TORRICELLI'S VACCUM |
|
Answer» Answer: The vacuum formed when a LONG tube, closed at one end and FILLED with MERCURY, is inverted into a mercury reservoir so that the open end of the tube is below the surface of the mercury. ... It is named after Evangelista Torricelli, who was responsible for the design of the mercury barometer. hope it use full.......✌ .. |
|
| 21. |
Define kinetic energy. derive an expression for kinetic energy formula and show relation between kinetic energy and momentum. |
|
Answer» <P>Answer: Expression W=Fs =mas v²=u²+2as v²=0+2as a=v²/2s therefore, W=mas =m x v²/2s x s =mv²/2 K.E=1/2mv² Relation between K.E and momentum K.E=p²/2m where p is the momentum
|
|
| 22. |
Define polarization |
|
Answer» the act of dividing SOMETHING, ESPECIALLY something that contains different people or OPINIONS, into two COMPLETELY opposing groups: |
|
| 23. |
3. In the given circuit, the effective resistancebetween points A and E will be |
Answer» The whole circuit has total effective RESISTANCE = RStep by step explanation: Resistance in SERIES circuit : Resistance in PARALLEL circuit : Resistance in parallel circuit for two resistnces : Circuit CDE : Two series resistances of resistance R So resistance in CDE = R + R = 2R CE and CDE are in parallel of resistance 2R each. So Resistance in Triangle CDE = So this CDE triangle becomes a resistor of resistance = R Similarly for triangle BCE BC and CE are in series with resistance R each So BCE = 2R Then BCE and BE of equal resistance 2R in parallel MAKE this triangle's resistance = R Similarly for triangle ABE AB and BE are in series with resistance R each So ABE = 2R Then ABE and AE of equal resistance 2R in parallel make this triangle's resistance = R
|
|
| 24. |
A particle starts from rest with a constantacceleration of 5 m/s2. The ratio of the distance andthe magnitude of displacement during the thirdsecond of journey is(1) Equal to one2) Less than one(3) More than one(4) The information is insufficient to predict |
|
Answer» Explanation: |
|
| 25. |
The minimum number of unequal forces when resultant will be zero is5342 Plz can anyone tell the answer with correct explanation? |
|
Answer» 2 Explanation: this is the answer i THINK |
|
| 26. |
A body is moving with 3 m/s and its acceleration is 2 m/s2. Find the distance travelled in 3rd second |
Answer» Answer:Distance travelled in 3RD SECOND = 8 m. Explanation :Refer the ATTACHED picture. |
|
| 27. |
Amount of energy required for making 500kg body escape from earth? |
|
Answer» 31.36 billion JOULES is in the KINETIC ENERGY of the 500 kg payload |
|
| 28. |
In complete cumbustion of fuels leads to formation of ............. |
| Answer» | |
| 29. |
The bob of a simple pendulum has mass 2g and a charge of 5.0 μC . It is at rest in auniform horizontal electric field of intensity 2000V/m. At equilibrium, the angle that the pendulum makes with the vertical is: (take g = 10m/s² )(A) tan⁻¹ (2.0)(B) tan⁻¹ (0.2)(C) tan⁻¹ (5.0)(D) tan⁻¹ (0.5) |
| Answer» | |
| 30. |
For the circuit shown, with R₁ = 1.0Ω, R₂ = 2.0Ω, E₁ = 2 V and E₂ = E₃ = 4 V, the potential difference between the points ‘a’ and ‘b’ is approximately (in V):(A) 3.3 (B) 2.3(C) 3.7 (D) 2.7 |
| Answer» | |
| 31. |
The reverse breakdown voltage of a Zener diode is 5.6 V in the given circuit .The current Iz through the Zener is: (A) 10 mA (B) 15 mA(C) 7 mA (D) 17 mA |
|
Answer» Answer: Current through DIODE is given as 10 mAExplanation: Let the current will flow through the TWO resistors in series So the current through it is given as now the VOLTAGE ACROSS 800 ohm is given as so here the diode will break down and voltage across it is 5.6 V now the voltage across 200 ohm is current in 200 ohm resistance is given as similarly current in 800 ohm so current through diode is given as #Learn Topic : Zener Diode |
|
| 32. |
A thermally insulted vessel contains 150 g of water at 0º C . Then the air from the vessel is pumped out a adiabatically. A fraction of water turns into ice and the rest evaporates at 0º C itself. The mass of evaporated water will be closes to:(Latent heat of vaporization of water = 2.10 × 10⁶ Jkg⁻¹ and Laten heat of Fusion of water = 3.36 × 10⁵ Jkg⁻¹) (A) 35 g (B) 150 g (C) 130 g (D) 20 g |
|
Answer» (D) m = 20 G. the correct answer..... Thanks for the QUESTION.... |
|
| 33. |
A circular coil having N turns and radius r carries a current. It is held in the XZ plane in a magnetic field Bî. The torque on the coil due to the magnetic field is: (A) Br²1/πN(B) zero (C)Bπr²1/N(D) Bπr²IN |
Answer» ANSWER:CORRECT Option is : (D ). TORQUE = NIπr²B Explanation :Torque = NIAB sin ¢ Here, ¢ = 90° Torque = NIπr²B |
|
| 34. |
In an interference experiment the ratio of amplitudes of coherent waves is a₁/a₂ = 1/3 . The ratio of maximum and minimum intensities of fringes will be:(A) 9 (B) 4(C) 18 (D) 2 |
|
Answer» Explanation: |
|
| 35. |
In SI units, the dimensions of √(∈ₒ/μₒ)is: (A) AT⁻³ ML³/²(B) A⁻¹TML³(C) A² T³M⁻¹ L⁻² (D) AT² M⁻¹L⁻¹ |
Answer» ANSWER:CORRECT Option is : (C) A² T³M⁻¹ L⁻²Explanation : |
|
| 36. |
A 200Ω resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be:(A) 500Ω (B) 400Ω(C) 300Ω (D) 100Ω |
| Answer» | |
| 37. |
A plane electromagnetic wave travels in free space along the x – direction. The electric field component of the wave at a particular point of space and time is E = Vm⁻¹along y – direction. Its corresponding magnetic filed component, B would be: (A) 2 × 10⁻⁸ T along z- direction(B) 6 × 10⁻⁸ T along x- direction(C) 6 × 10⁻⁸ T along z- direction(D) 2 × 10⁻⁸ along y- direction |
Answer» The CORRESPONDING magnetic filed COMPONENT, B WOULD be B = 2 x 10^6-8 T ALONG z direction.Option (A) is correct.Explanation: The direction of propogation of an EM wave is direction of E × B . i^ = j^ × B^ B^ = k^ C = E / B => B = E / C = 6 / 3 x 10^8 B = 2 x 10^6-8 T along z direction. Thus the corresponding magnetic filed component, B would be B = 2 x 10^6-8 T along z direction.
|
|
| 38. |
In figure, the optical fiber is l = 2m long and has a diameter of d = 20 μ m. If a ray of light is incident on one end of the fiber at angleθ₁ = 40º , the number of reflection it makes before emerging from the other end is close to: (A) 57000 (B) 45000(C) 66000 (D) 55000 |
|
Answer» The number of reflection it makes before emerging from the other END is close to: (A) 57000 This can be calculated as FOLLOWS:
l sin 40º = 1.31 sin θ sin θ = 0.64 / 1.31 ≈ 1/2
= 20√3 x 10⁻⁶ m
≈ 57000
|
|
| 39. |
Church bell are larger in size why? |
|
Answer» Answer:The bell of TEMPLE is BIG in SIZE because ; Explanation:It is because it can PRODUCE a large sound and it is formidable for every person because the donkey need more bells. |
|
| 40. |
A solid conducting sphere, having a charge Q, is surrounded by an uncharged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a charge of –4 Q, the new potential difference between the same two surface is:(A) 2 V (B) –2V(C) 4 V (D) V |
|
Answer» a or B PROBABLY b. ....... |
|
| 41. |
A thin circular plate of mass M and radius R has its density varying as p (r) = pₒr with Pₒ as constant and r is the distance from its center. The moment of Inertia of the circular plate about an axis perpendicular to the plate and passing through its edge is I = aMR² . The value of the coefficient a is: (A) 8/5(B) 1/2(C) 3/5(D) 3/2 |
|
Answer» The value of the coefficient a is equal to 3/5.
|
|
| 42. |
Radiation coming from transition n = 2 to n = 1 of hydrogen atoms fall of He⁺ions in n = 1 and n = 2 states. The possible. Transition of helium ions as they absorb energy from the radiation is: (A) n = 2 → n = 4 (B) n = 2 → n = 5 (C) n = 2 → n = 3 (D) n = 1 → n = 4 |
|
Answer» A. n = 2 to n = 4 just MULTIPLY z2/n2 Explanation: |
|
| 43. |
Ship A is sailing towards north – east with velocity ⃗v = 30 î + 50ˆjkm/hr where î points east and ˆj , north. Ship B is at a distance of 80 km east and 150 km north of Ship A and is sailing towards west at 10 km/hr. A will be at minimum distance from B ins: (A) 2.2 hrs. (B) 4.2 hrs. (C) 2.6 hrs. (D) 3.2 hrs. |
|
Answer» B = 80 i + 150 j - 10 t i position of B at TIME t A = 30 t i + 50 t j position of A at time t B - A = (80 - 40 t) i + (150 - 60 t) j | B - A | = (6400 - 6400 t + 1600 t^2 +22500 - 18000 t + 3600 t^2)^1/2 |B - A|^2 = 28900 - 11600 t + 5200 t^2 Take the derivative to find the minimum of |B - A|^2 t = 116 / 52 = 2.2 HRS |
|
| 44. |
Four identical particles of mass M are located at the corners of a square of side ‘a’. What should be their speed if each of them revolves under the influence of other’s gravitational field in a circular orbit circumscribing the square?(A) 1.35√(GM/a)(B) 1.16√(GM/a)(C) 1.41√(GM/a)(D) 1.21 √(GM/a) |
|
Answer» C. is the CORRECT answers gravitational ENERGY = kinetic energy |
|
| 45. |
Prism with angle 60 , if the deviation angle is 16 , calculate the refractive index of the prism |
|
Answer» Answer: 1.26 Explanation: d=(u-1)A A=60,u=16 16=60(u-1) by solving u=1.26 |
|
| 47. |
The pressure of the gas is doubled, keeping the temperature constant, the volume of the gas is |
|
Answer» Answer: For a fixed mass of GAS, at a constant temperature, the product (pressure x VOLUME) is a constant. Pressure × Volume = constant P V= constant Means, Pressure α 1 / Volume On doubling the pressure the volume must be HALVED to that of the original volume. So, the volume of the gas will be 1 / 4 HOPE THAT IT WAS HELPFUL!!!! MARK IT THE BRAINLIEST IF IT REALLY WAS!!!!
|
|
| 48. |
The wavelength of the carrier waves in a modern optical fiber communication network is close to:(A) 1500 nm (B) 600 nm(C) 2400 nm (D) 900 nm |
|
Answer» To minimise attenuation, WAVELENGTH of carrier waves is CLOSE to 1500 NM |
|
| 49. |
A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1π ms⁻² , what will be the tensile stress that would be developed in the wire?(A) 6.2 × 10⁶ Nm⁻²(B) 4.8 × 10⁶ Nm⁻²(C) 5.2 × 10⁶ Nm⁻²(D) 3.1 × 10⁶ Nm⁻² |
|
Answer» Option (D) 3.1 × 10⁶ Nm⁻² Explanation: Tensile stress in WIRE will be = Cross section Area / Tensile force = 4 * 3.1 π / π * 4 * 10^-6 HOPE THAT IT WAS HELPFUL!!!! MARK IT THE BRAINLIEST IF IT REALLY WAS!!!! |
|
| 50. |
A thin strip 10 cm long is on a U shaped wire of negligible resistance and it is connected to a spring of spring constant 0.5Nm⁻¹(see figure). The assembly is kept in a uniform magnetic field of 0.1 T. If the strip is pulled from its equilibrium position and released, the number of oscillations it performs before its amplitude decreases by a factor of e is N. If the mass of the strip is 50 grams, its resistance 10Ωand air drag negligible, N will be close to:(A) 50000 (B) 10000(C) 1000 (D) 5000 |
|
Answer» Explanation: 66y777 i have been a fan for years but we are STILL very HAPPY to be able and have been WORKING on a LOT more of |
|