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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.
| 2. |
Write an activity to show that liquid pressur is transmitted equaly in all direction and is same at a given horizontal level. |
Answer» Aim :To show that liquid pressure is transmitted EQUALLY in all directions at a given HORIZONTAL level . Method :
CONCLUSION : the water from EVERY hole will flow with same pressure and upto same distance . IT IS PROVED THAT LIQUID PRESSURE IS EQUAL IN ALL DIRECTIONS AT HORIZONTAL LEVEL .hope it helps u thank u Plz mark as brainlist |
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| 3. |
The surface charge density of a thick metal plate is sigma the electric field near the surface is |
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Answer» Answer: Explanation: According to gauss theorem E= q/ε Here q is the charge of the conductor now, σ=q/ds q=σds HENCE, E.dscosθ = σds/ε As the unit VECTOR is NORMAL to to the surface in the upward DIRECTION. Hence the angle between the electric field and area vector is 0 E.ds = σds/ε E=σ/ε |
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| 4. |
What type of pressure is involved in the filling no of a liquid in a syringe ? |
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Answer» Gravity Explanation: |
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| 5. |
Examples of auxiliary motion |
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Answer» they are USEFUL but not assential Explanation: so rate me 5/5 please please please please please please please please |
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| 6. |
A car moves with a speed of 30km/h for half- an- hour; 25km/h for 1 hour and 40km/h for 2 hour. What is the average speed of the car? |
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Answer» Answer: God and ekta hai KEH me anya khel KAL ROYAL Kellogg anuvanshiki hi ekk why ret uadd JY |
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| 7. |
Is it true that to specify the speed of any object we require only it's magnitude? urgent please help |
Answer» Answer:YES it is true because SPEED is a SCALAR quantity which has only MAGNITUDE without any direction.✌ |
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| 8. |
Explain 10 useful examples of atmospheric pressure |
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Answer» Answer: Atmospheric PRESSURE Explanation: I hope it's HELP.. VARIOUS examples for atmospheric pressure in DAILY life |
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| 9. |
A convex lens of a focal length 20cm produces a real image 3 times magnified.Find the object distance |
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Answer» Explanation: f = 20 cm m = -3 = v/u v = -3u LENS formula: 1/v - 1/u = 1/f 1/(-3u) - 1/u = 1/20 - 4/(3u) = 1/20 3u = - 4 x 20 u = -80/3 = - 26.6 cm The object is at a distance of 26.6 cm to the LEFT from the OPTIC CENTRE of the lens |
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| 10. |
there are two children riding a bicycle with the same speed on a straight road explain whether these children are at rest or in motion answer in length |
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Answer» THOUGH he is in rest but he is in MOTION because if he jump from MOVING bicycle he will be injured HENCE in motion |
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| 11. |
A car is moving along a straight road at a steady spead. It travels 150 min 5 seconds :(a) What is its average speed ?(b) How far does it travel in 1 second ?(c) How far does it travel in 6 seconds ?(d) How long does it take to travel 240 m ? |
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Answer» (a) Average speed = Total distance/ Total TIME =150m/5s =30m/s =108km/h (b) Distance travelled in 1 sec=30m
(c) Distance travelled in 1 sec=30m Distance traveled in 6sec=30*6 =180m (d) time taken=dis/speed =240/30 =8SEC Hope it helps plz LEAVE a like And MAKE it the BRAINLIEST |
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| 12. |
.A car moves with a speed of 30km/h for half- an- hour; 25km/h for 1 hour and 40km/h for 2 hour. What is the average speed of the car? |
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Answer» Answer: 34.28km/HR Explanation: 1. 30km/hr for 1/2hr so 30/2 =15km 2. 25km/hr for 1hr so 25 km 3. 40km/hr for 2 hr so 40×2=80 km 15+25+80=120km now we have total distance,, 1/2 hr+1hr+2hr= 3 1/2 hr = 7/2 hr now we have total TIME,,,, average speed= total distance/total time taken 120/7/2 = 120×2/7 = 240/7= 34.28km/hr
Please mark as brainliest if it HELPS you |
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| 14. |
Solve it jsjdnnsnskhshsj |
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Answer» Answer: PLEASE refer to ATTACHMENT and MARK it as BRAINLIEST |
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| 15. |
NO MACHINE IS AN IDEAL WHY |
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Answer» an ideal machine is a machine which gives 100 percent EFFICIENCY which means that entire input energy is CONVERTED into output energy which is not POSSIBLE because some energy is lost due to friction and imperfect components therefore no machine is an ideal machine. |
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| 16. |
4 difference between rest and motion |
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Answer» Rest :- Position or orientation of the object remains same and there is no change of position and change of orientation with respect to time.
Motion:- motion of the object is DUE to change of position or change of orientation with respect to time. Motion and rest are two different states of an object. ... So, motion and rest are RELATIVE to a closed FRAME. Considering the closed frame, an object is said to be at rest if it doesn't change its position at any given time. And, motion is when an object CHANGES its position with respect to time WITHIN the closed frame. |
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| 17. |
Why do we keep conical flask airtight |
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Answer» Answer: Answer: we keep the CONICAL flask AIRTIGHT because that the KOH solution didn't absorb the CO2 of upper half of LEAF. KOH solution kept in the test-tube inside the air-tight conical flask absorbs the evolved carbon DIOXIDE released by germinating seeds; thereby creating a PARTIAL vacuum in the conical flask. |
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| 18. |
Explain whyF+F=F and F-F=F where F is a force |
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Answer» In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which INCLUDES to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F. The original form of Newton's second law states that the net force ACTING upon an object is EQUAL to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. Concepts related to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in rotational speed of an object. In an EXTENDED body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the internal mechanical stress. Such internal mechanical stresses cause no acceleration of that body as the forces balance one another. Pressure, the distribution of many SMALL forces applied over an area of a body, is a simple type of stress that if unbalanced can cause the body to accelerate. Stress usually causes deformation of solid materials, or flow in fluids. |
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| 19. |
The magnetic field lines due to a straight line wire carrying a current are a. Straightb. Circular c. Parabolic d. Elliptical |
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Answer» There to be there to me and t and |
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| 20. |
The distance time graph for two objects are shown in figure .(i)which object has higher speed and why |
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Answer» Hey mate, The object which has a HIGHER SLOPE...has higher SPEED...... Hope it helps you dear ✌️✌️✌️✌️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ |
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| 21. |
Prepare the following graph with fiveexample each from daily life.1. Distance time graph -1. Uniform motion2. Non - Uniform motionII. Velocity time graph -1. Uniform motion2. Non - Uniform motionIII. Acceleration - time graph - Nonuniform motion |
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| 22. |
velocity of a particle moving along a straight line in a certain time interval is shown in figure given what is the distance travelled during acceleration |
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Answer» Here's your answer in the PIC |
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| 23. |
When is the value of acceleration negative |
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Answer» it is RETARDATION or deceleration Explanation: |
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| 24. |
Differentiate metals and nonmetals on the basis of lustre |
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Answer» non metals are not BUT iodine and diamond are lustrous nonmetals hopeit helps mark as brainliest cheers DJOKOVIC fan:) |
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| 25. |
The potential energy of a body of mass 1 kg kept at higher 1 m is 1 joule is that true or false |
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Answer» Answer: False Explanation: According to the GIVEN question, P.E. = potential energy = 1 J m = MASS = 1 kg h = HEIGHT = 1 m g = ACCELERATION DUE to gravity = 9.8 m/s^2 And we are asked to find if the P.E. is 1 j when m = 1 kg and h = 1 m. We know,
Putting the values we get,
Therefore, We got P.E. as 9.8 J but in the given question it's 1 J, thus it's false. |
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| 26. |
define uniformly accelerated motion and uniform motion also write any two equations of uniformly accelerated motion |
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Answer» Uniformly accelerated MOTION is the motion with CONSTANT acceleration |
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| 27. |
Draw the graph for a body moves with velocity v and finally its velocity becomes zero. How will you calculate retardation from the graph? |
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Answer» You can find slope of the graph at any instance to GET retardation 1. Get the EQUATION of graph for velocity v/s time graph and find its equation. 2. DIFFERENTIATE the equation to get a equation for acceleration. 3. Substitute the value of Time in order to get acceleration/ deceleration of an OBJECT at any instance. |
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| 28. |
Answer the question1 What are the fundamental and derived physical quantities?2 Define area, density , volume.3 How do we measure area ,volume, ofirregular shape bodies?4 What is beam balance ? How it measure mass ?5 What type of physical quantity are measure by spring balance and physical balance ? 6 Define speed. How it is different from velocity? |
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Answer» The DENSITY of a substance is given by mass per UNIT upon volume........ The mass occupied by an OBJECT say solid, liquid or gas.......... |
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| 29. |
Visit a farm, nursery or a garden nearby,gather information about .Importance of seeds selection. |
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Answer» Answer: SEED selection is important because if we COULD not select GOOD seed than PLANT will not GROW |
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| 30. |
What is the angular velocity of houre hand? |
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Answer» Explanation: The car's angular velocity is pi / 2 radians per minute. To GET our second FORMULA for angular velocity, we recognize that theta is given in radians, and the definition of radian measure GIVES theta = s / r. ... SIMPLIFYING gives W = s / (rt), where s = arc length, r = radius, and t = time.Jan 5, 2016 |
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| 31. |
Which force is being applied by a vendor when he is pushing the pushcart? |
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Answer» The FORCE that is being APPLIED by the VENDOR is MUSCULAR force |
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| 32. |
three identical capacitors of capacitance c are connected in series and then the first and the last conductors of the combination are connected to earth. a charge q is communicated to the second conductor of first capacitor. what will be the potential of this conductor ? |
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Answer» Answer: Explanation: The answer must be zero potential. We KNOW that the 3 capacitors are CONNECTED in series, hence the potential of the capacitors should be different but CHARGE should be same. As same charge is going through the capacitors then the 3 will have equal charge distribution. Since, the 1ST and the last capacitors are connected to zero potential hence the NET charge in the capacitors also becomes zero. |
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| 33. |
Body travelling with speed of 20km/h applyes brake and reduced to 10km/h in 3 min. Find the acceleration of the body |
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Answer» Initial speed(u) = 20 km/hr Final speed(V)= 10 km/hr Time TAKEN(t) = 3mins = 1/20 hrs Acceleration of a BODY is GIVEN by:- a = a = a = -1/2 km/hr acceleration comes negative So, Retardation of a body is 1/2km/hr |
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| 34. |
What is spherical mirror . distinguish difference between concave and convex mirror |
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Answer» A CURVED mirror is a mirror with a curved reflecting surface. The surface may be either CONVEX or concave. Most curved mirrors have surfaces that are SHAPED like part of a sphere, but other shapes are sometimes used in optical DEVICES. |
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| 35. |
Briefly the concept of velocity and acceleration |
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Answer» VELOCITY is RATE of CHANGE of displacement acceleration is the rate of change in velocity |
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| 36. |
What is the elevation of road |
Answer» super-elevation is the amount by which the outer EDGE of a CURVE on a road or RAILWAY is banked above the inner edge |
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| 37. |
Question 2Draw ray diagrams showing the image formation by a convex mirror when an object is placed at(a) infinity (b) at finite distance from the mirror |
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| 38. |
Why the centrifugal force is called a pseudo force |
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Answer» Answer: THE TERM PSEUDO MEANS---FALSE OR NOT REAL OR WE CAN SAY THE THIS THAT IS SOMETIME PRESENT OR SOMETIME NOT . SAME CENTRIFUGAL FORCE IS A FALSE FORCE THAT WE APPLY WHILE CHURING MILK |
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| 39. |
.A body starts to slide over a horizontal surface with initial velocity of 12m/s. Due to friction its velocity decreases at the rate of 2m/s^2. How much time will it take for body to stop. |
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Answer» Answer:6 seconds Explanation: |
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| 40. |
Please send me the answer Question no.10 |
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Answer» Answer: 1/v+1/u=1/f this the RELATION. |
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| 41. |
A particle starts to move in a straight line from a point with velocity 10 M per second and acceleration - 2 metre per second square find the position and velocity of the particle at.....t=5sec...t=70sec |
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Answer» when t=5 x=35m when t=70 x=5600m Explanation: x=v1*t+1/2at^2 v1=10m/s a=2m/s^2 when t=5 x=10*5+1/2*2*25 x=35m when t=70 x=10*70+1/2*2*4900 x=5600m |
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| 42. |
An object is placed at a distance ( f /3 ) from a convex lens . The distance of image from the lens is ? |
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Answer» hola✌✌ for a convex lens, FOCAL length=f object distance=f/3 v=f/4 hope the answer helps |
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| 43. |
(8) A body is decelerating uniformly for 5 second to a constant speed and moves with this speed for 30 seconds.accelerates for 10 sec to acquire the speed it had in the beginning. Draw velocity time graph of the body. |
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Answer» GRAPH Explanation: A body is decelerating uniformly for 5 second to a constant speed and MOVES with this speed for 30 seconds. accelerates for 10 sec to acquire the speed it had in the beginning. Draw velocity time graph of the body. Time Velocity 0 20 1 18 2 16 3 14 4 12 5 10 6 10 7 10 8 10 9 10 10 10 11 10 12 10 13 10 14 10 15 10 16 10 17 10 18 10 19 10 20 10 21 10 22 10 23 10 24 10 25 10 26 10 27 10 28 10 29 10 30 10 31 10 32 10 33 10 34 10 35 10 36 11 37 12 38 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 |
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| 44. |
1 micro coulomb charge is shifted from A to B and it is found that workdone by an external force is 40 micro joule . in doing so against electrostatic forces ,find the potential difference Va-Vb |
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Answer» Explanation: Vb-Va = W/Q =40*10^-6/1*10^-6 =40 Volts |
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| 45. |
A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 m long.The time taken by it is |
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Answer» Answer: Explanation: Total distance S = 200 + 300 = 500m Initial velocity U = 3m/s Final velocity V = 5 m/s We know, v² - u² = 2AS => 25 - 9 = 1000a => a = (16/1000)m/s² Again v = u + at => 5 = 3 + (16/1000)t => t = 2 × (1000/16) = 125 s = 2 minutes 5 second |
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| 46. |
Q if the plank's constant(h) and the speed of light in vaccum (c) are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three choose fundamental quantities.(1) Mass of electron (2) universal gravitational constant(G) (3) Charge of electron(4) mass of proton |
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| 47. |
show that deviation of a ray through a prism does not depend upon the angle of incidence provided is it small? |
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Answer» I don't know your ANSWER THIK HII you speak thik hii bye bye bye to me and my YAR |
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| 48. |
In which orientation a dipole placed in uniform electric field? |
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Answer» Answer: A DIPOLE placed in a uniform electric FILED is in Stable equilibrium when the electric field is DIRECTED along the DIRECTION of the dipole i.e., when is PARALLEL to. Unstable equilibrium when the electric filed is directed at an angle of 180 degrees with the direction of the dipole, i.e., when is anti-parallel to. |
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| 49. |
Is orbital angular momentum conserved independently of spin angular momentum? |
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Answer» Explanation: ANSWER to: What is the equivalent RESISTANCE of the network SHOWN in the ... FIGURE. Answer and Explanation: We are given a network of resistors. .... Find R_{AB} in the network in ... |
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