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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.
| 2751. |
Dimensions of power is........ |
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| 2752. |
A brick is 30 cm long, 10 cm wide and 10cm thick.It weights 24 N and is lying on the ground.Find the pressure exerted by the brick on the ground. |
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Answer» Given,
To Find:- PRESSURE exerted by the brick on the ground. Formula used:- Pressure = Force / AREA Calculations :-Pressure = Force / Area substituting the given values Here, Brick is lying with area 30 CM × 10 cm in contact so, so pressure will 800pa Brick is lying with area 10 cm × 10 cm in contact so, =2400pa |
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| 2754. |
Describe the direction of induced current |
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Answer» An INDUCED current has a direction such that the magnetic field DUE to the induced current opposes the CHANGE in the magnetic FLUX that induces the current. for the given loop (this vector is always normal to the loop!) |
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| 2755. |
A body goes from A to B with a velocity of 20 m/s and comes back B to A with a velocityof 30 m/s. The average velocity of the body during the whole journey is (1) zero (3) 25 m/s (2) 24 m/s (4) none of these |
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Answer» Explanation: =50/2=25m/s |
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| 2756. |
Give two properties of electric lines of froce |
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Answer»
1) The electric lines of force start from a POSITIVE charge and ENDS on a negative charge. 2) The electric lines of force always enter or LEAVE the charged surface normally. 3) Electric lines of force can never INTERSECT each other. 4) The electric lines of force cannot PASS through a conductor. plz mark a brain list bro ..........
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| 2757. |
If 'P' is the pressure and 'F'is the force then in equation P = FK thedimension of K areM'LITML-210M'L-22MLT |
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Answer» EXPLANATION:skjajwaklakabhalalabalsjslbalabalajalsjalbsla |
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| 2758. |
মজিগড় চাষালার মধ্যে বাস চলাচল করে। উভয়দিক থেকে ৫ মিনিট অন্তরবাস ছাড়ে। একজন বালক সাইকেল 10 km/h বেগে চন্ডিগড় থেকে আহ্বালাযাওয়ার পথে দেখে যে আম্বালাগামী বাস তাকে প্রতি 15 min অকর আরচণ্ডিগড়গামী বাস তাকে প্রতি 5 min অন্তর অতিক্রম করছে। এখন বাসেরভুতি ও সময় নির্ণয় করাে। ধরে নাও যে বাসের বেশ ধুবক। |
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Answer» Answer: Buses ply between Majigarh farms. 5 minutes INTERVAL from both sides Leaving the bus. A boy cycling from Chandigarh at a SPEED of 10 km / h On the WAY he saw that the bus GOING to Ambala was taking him every 15 minutes Chandigarh-bound buses are passing him every 5 min. Now on the bus Determining ghosts and times. Assume that the bus is quite smooth. Solve it !!! |
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| 2759. |
If a 1 MHz radio transmitter sends out 20 W ofradiation, the amplitude of the magnitude of themagnetic field in Tesla) of the radiation at adistance of km from the transmitter is10915(assume that the radiation is uniform on a spherewith the transmitter at its center)(Take Eo = 9 x10-12 c? N/m2) |
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Answer» Answer: A radio transmitter SENDS out 60W of radiation. Assuming that the radiation is UNIFORM on a sphere with the transmitter at its centre, the INTENSITY ( in W/m 2 ) of the wave at a DISTANCE 12km is |
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| 2760. |
1. State Newton's 2nd law of motion along with 3 examples.2. Calculate the force acting on a body of mass 51 kg when it is accelerated by 0.8 m/s^2 |
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Answer» Answer: NEWTON's Second LawNewton's Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. ... Your leg muscles pushing pushing on the pedals of your bicycle is the force. When you push on the pedals, your bicycle accelerates. Newton's Third LawHis third law states that for every action (force) in NATURE there is an equal and opposite reaction. In other words, if object A EXERTS a force on object B, then object B also exerts an equal and opposite force on object A. The force of gravity pulling you down against your chair is BALANCED by the force of the chair pushing up against you. The forces acting on you as you sit in your chair are just ONE example of Newton's third law, which states that for every action force there is an equal and opposite reaction force. 2)Calculate the force acting on a body of mass 51 kg when it is accelerated by 0.8 m/s^2Given: Mass = 51 kg Acceleration = 0.8 m/s² Ans: Force applied will me F = mass x acceleration = 51 x 0.8 = 40.08 N |
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| 2761. |
What is the mass of that body can a weight lifter can lift on Jupiter if he can lift 100 kg in earth? |
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Answer» Answer: The answer is 40kg Explanation: ACC. due to gravity in EARTH is 9.8m/s. It is 24.79 m/s at jupiter. Now to know how many TIMES that is of earth we do 24.79÷9.8 which GIVES us approximately 2.5. Now we multiply the inverse of 2.5 i.e. 1/2.5 with 100 so we have 100×1/2.5 which is equal to 40. |
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| 2762. |
Calculate the force between two protons, if they are 4.0×10-15 metres away from each other. (where charge of proton is 1.6×10-19 coulomb) |
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Answer» Answer: 14.4N Explanation: we KNOW F=κq1.q2/r² |
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| 2763. |
Plz answer it step by step |
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Answer» answer in the ATTACHMENT |
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| 2764. |
A sationary charge particle in a magnetic field experience a magnetic feild true or false |
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Answer» Explanation: stationary CHARGED particle in a MAGNETIC FIELD does not EXPERIENCE a force. therefore FALSE |
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| 2765. |
प्रकाशिक तन्तु........के सिद्धांत पर काम करता है। |
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Answer» SRY I don't UNDERSTAND what you ASKED |
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| 2766. |
An magnet is a tempory magnet true or false |
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Answer» Answer: false |
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| 2767. |
5 Find out the errors in the sentences and rewrite them correctly:(i)Ram is taller to Shyam.(ii), Ravi is a honest boy.(111) I want to bye some books from the shop.(iv)He has been playing football for 3 O'clock.(v)He died from Maleria. |
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Answer» Answer: 1) Ram is taller than Shyam. 2)Ravi is an honest boy. 3)I want to buy some books from the shop. 4) He is PLAYING FOOTBALL from 3O' Clock. 5)He DIED from Malaria. Explanation: |
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| 2768. |
What is the Full form of JB in electricity ??⚠️⚠️WARNING !!!(Pls don't give answers like Justin Bieber or Jaebum....bE sERioUS)..... |
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Answer» hey mate here is your answer UPS. UN-INTERRUPTED POWER SUPPLY. 32. JB. JUNCTION BOX Explanation: hope it helps. |
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| 2769. |
how many electrons must be removed fro. a piece of metal to give it a positive charge of 1×10 power -7 |
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Answer» BASICALLY 6.25x10^11 electrons are needed to MAKE a charge of -1.0x10^-7C, which when removed from the piece of metal, result in an increase in charge of 1.0x10^-7C. HOPE this helps. Explanation: Hope it helps... |
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| 2770. |
0. 8 An electron situated at a distance 5m on the axis of an electric dipole of dipole moment 2 X10^-9 C m from its centre is brought towards the dipole at a point at distance 4m from its centreCalculate the work done. |
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| 2771. |
Distinguish between balance force and non balanced force with 2 point and example also |
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Answer» Answer: In balanced FORCES, the magnitude of the two forces is equal, whereas, in the case of unbalanced forces, the magnitude of the two forces are unequal. ... Conversely, in unbalanced forces, the individual forces EITHER act in same or OPPOSITE direction. Balanced forces CAUSE a still object to remain at rest.ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ ᴍᴀᴛᴇʙᴇ ʙʀᴀɪɴʟʏ |
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| 2772. |
Describe the following terms use in reflectionnormal.,angle of incident,angle of reflection |
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Answer» Answer: NORMAL =it is a per perpendicular on the reflective SURFACE . ANGLE of incidence=. the angle which forms between incidence ray and with normal. Explanation: Angle if reflection=The angle which forms reflection ray between reflective ray and with normal . |
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| 2773. |
प्रकाशिक तन्तु........के सिद्धांत पर काम करता है। |
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| 2775. |
ध्वनि तरंगें..............में गमन नहीं कर सकतीं। |
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Answer» ध्वनि तरंगें निर्वातमें गमन नहीं कर सकतीं। |
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| 2776. |
State the law of reflection . describe how they can be vertified graphically..? |
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Answer» Answer: 1.the incident ray ,reflected ray, and the normal all lies on same plane 2.a the ANGLE of incidence is ALWAYS EQUAL to angle of reflection Explanation: HOPE it may help u MAKE IT BRAINLIEST |
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| 2777. |
if the total number of solenoid is double and simultaneously the length of the solenid is double , then the magnetic feiled inside the solenoid is also double . trueor false |
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Answer» Answer: Doubling the number of turns in a solenoid DOUBLES its MAGNETIC field, and hence the field increases. ... The magnetic field remains the same because the number of turns per LENGTH is unchanged.ʏᴏᴜʀ ᴀɴsᴡᴇʀ ɪs ғᴀʟsᴇʙᴇ ʙʀᴀɪɴʟʏ |
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| 2778. |
who will give me class 9 difficult numerical for physics will be marked brain.... PL give me or seND pic of more than 50 numerical s of physics class the more you give the more you get brilliant and followers PL urgent. if you cannot give then don't give the answer other while it will be reported |
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| 2779. |
Why is red colour selected for danger signal? |
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Answer» Answer: Red color can be SEEN from FAR away distance, and HENCE it is selected for danger SIGNAL. So that someone from far away can see it. |
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| 2780. |
who will give me class 9 difficult numerical for physics will be marked brain.... PL give me or seND pic of more than 50 numerical s of physics class the more you give the more you get brilliant and followers PL urgentif you cannot give then don't give the answer other while it will be reported |
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Answer» Answer: I am the ONE who joined in ZOOM meeting FOLLOW me |
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| 2781. |
Fringes of 1.8*10^-4m thickness are produced by Fresnel's biprism in th focal plane of a microscope which is placed 1.0m from the slit. A lens inserted between the biprism and the microscopes give the images of the slit in two positions. In one case the two images of the slit are 4.05mm and in the second case 2.90mm apart. Find the phase difference and the path difference corresponding to the 7th bright band and the 11th bright band respectively. |
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| 2782. |
The magnetic field around a current carrying straight conductor is in concentric circle at a point where the conductore is not locatedtrue or false |
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| 2783. |
Can you tell me the answer. |
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Answer» Explanation: 1.a 2.c 3.b 4 .b 5.a 6.c that its |
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| 2784. |
The vapour pressure of a solvent. A is 0.80 atm.When non-volatile substance B is added to thissolvent, its vapour pressure drops to 0.6 atm. Themole fraction of B in the solution is[a] 0.25 |
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Answer» this is the answer in the Pardeep BOOK chapter 2 SOLUTION 0.95667 |
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| 2785. |
When cyan light is made to fall on green object it reflect which colour |
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Answer» cyan light (i.e., a MIXTURE of BLUE and green) shines UPON the same magenta filter. Magenta ABSORBS its complementary color - green. Thus, green is subtracted from cyan light. That leaves blue light to be transmitted by the filter. |
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| 2786. |
The first operation involved in aCarnot cycle is(a) isothermal expansion(b) adiabatic expansion(c) isothermal compression(d) adiabatic compression |
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Answer» Answer: The Carnot CYCLE consists of the following four PROCESSES: A reversible isothermal gas EXPANSION process. In this process, the ideal gas in the system absorbs qin amount heat from a heat source at a high TEMPERATURE Thigh, expands and does work on surroundings. |
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| 2787. |
State the action and the reaction for a person swimming. |
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Answer» Explanation: while swimming , a PERSON pushes WATER with his hands in the backward direction is ACTION and water in turns pushes him forward DUE to FORCE is reaction. |
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| 2788. |
What is the ratio of angular speed of second hand watch to minute hand watch |
Answer» The ratio of ANGULAR speed of minute hand and second hands in a watch is 12:1. Solution: The minute hand of a watch covers 360 degrees in 60 MINUTES or it can be said as 6 degree/minute.HOPE IT'S HELP YOU ❤❇ |
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| 2789. |
The blue colour of sky is due to the fact that |
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Answer» Sunlight REACHES Earth's atmosphere and is scattered in all DIRECTIONS by all the gases and particles in the air. Blue light is scattered more than the other COLORS because it travels as shorter, smaller WAVES. This is why we see a blue sky most of the time. |
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| 2790. |
A converging lens of refractive index 1.5 kept in a liquid medium having the same refractive index. What would be the focal length of the lens in this medium? |
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Answer» Answer: REFRACTIVE INDEX of the LENS = 1.5 =Refractive index of MEDIUM the lens in a medium (liquid) will be act LIKE a plane of glass. Its focal length will be infinte By using the formula of lens maker. 1/f = (u - 1) (1/R1 - 1/R2) 1/f = (u2/u1 -1) (1/R1 - 1/R2) u1 = u2 1/f = 0 thus, f = infinity |
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| 2791. |
The image of a Candle flame fromed by a mirror is obtained on a screen if the image is three times the size of flame and the distance between mirror and image is 80cm at what distance should the candle bthe image of a Candle flame fromed by a mirror is obtained on a screen if the image is three times the size of flame and the distance between mirror and image is 80cm at what distance should the candle be placed from the mirror what will be the position of the flame to form an image at 30cm in front the mirror |
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Answer» hi, how R u jlxdludukykdyykdhkfhkdgkdstjtjwtatjtjststjsgjgsjgkysgsitlafuaut H |
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| 2792. |
PageFind the velocity and acceleration in theequation at t= 15 sec x=5t^4+3t²+2t+1. want answer soon as possible |
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Answer» Answer
Given
To Find
Concept Used Velocity : It is defined as ratio of displacement and time . ( or ) Velocity over a certain period of time is the instantaneous change in POSITION (dx) over the instantaneous change in time (dt) Acceleration : It is defined as ratio of velocity and time ( or ) Acceleration over a certain period of time is the instantaneous change in velocity ( dv ) over the instantaneous change in time ( dt ) |
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| 2793. |
Sun appears red at sun rise and sunset thsi is due to the scattering of _______ |
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Answer» Answer: The REDDISH APPEARANCE of the sun at sunrise or SUNSET is due to scattering of light by the MOLECULES of AIR and other fine particles in the atmosphere have size smaller than the wavelength of visible light from the sun near the horizon. |
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| 2794. |
Distinguish between contact force and non contact force with an example and scientific reason |
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Answer» Answer: Contact force- it is a TYPE of force which REQUIRES a contact to occur. For example KICKING a ball is an example of contact force because while kicking a ball your foot came in the contact/touches it it FORCED the ball to push forward. Non-contact force- it is a kind of force which does not require a contact to occur. For example gravity, it acts LIKE a non contact force because it pulls you even when you are in the contact with it . I HOPE THIS HELPED YOU!!!! |
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| 2795. |
The distance time graph for an object is uniform linear motion is a straight line parallel to the time axis (true or false) Give the write answer don't give wrong answer for points |
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Answer» It is TRUE When the MOTION is uniform, the distance time GRAPH is a STRAIGHT line with a slope. When the motion is non-uniform, the distance time graph is not a straight line. |
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| 2796. |
By using _____ effect scientists determine the shapes of the molecule |
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Answer» Answer:VSEPR Explanation: Using the VSEPR THEORY, the electron BOND pairs and lone pairs on the CENTER atom will help us predict the shape of a molecule. The shape of a molecule is determined by the location of the nuclei and its electrons. The electrons and the nuclei settle into positions that minimize REPULSION and maximize attraction.May 18, |
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| 2797. |
Is it possible to have equilibrium point that is both unstable and stable? |
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Answer» what is the QUESTION?? |
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| 2798. |
The reason for blue colour sky is due to ______ molecules |
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| 2799. |
The intensity of scattered light is maximum at ________ angle of scattering |
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Answer» The angular position of the maximum scattered intensity of max=8° did not alter for the TWO wavelength. Explanation: HOPE it helps you and pls follow me!!! |
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| 2800. |
Person may bleed fromgreat height abovenose whensea level. |
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Answer» when we go to higher grounds the level of air DECREASES so DUE to no OXYGEN we bleed |
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