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. |
If concave mirror produces a real imag mitor produces a real image of magnification 'm'and the focal length of the mirror isthen the object distance isa) (m + 1)fb) (m-1) f/mc) (m - 1)d) (m +1) f/m |
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| 2. |
Give two uses of ultrasonic vibrations in industries? |
| Answer» USES are 1) for joining TWO plastic SURFACES..2) for sterilization of milk and milk products..3) in sonography and ecocardiographyExplanation: | |
| 3. |
Call potential energy he is converted into kinetic energy |
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Answer» When an object falls, its gravitational potential ENERGY is CHANGED to kinetic energy. You can use this relationship to calculate the speed of the object's descent. Gravitational potential energy for a MASS m at height h near the surface of the Earth is mgh more than the potential energy would be at height 0. |
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| 4. |
What are x rays give its two uses |
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Answer» for bone BREAK therapy . EXPLANATION:MARK as BRAINLIEST |
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| 5. |
Resultant R of a & b is 60 to both of them which of the following is true |
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Answer» where is the OPTIONS..... |
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| 6. |
A body start from rest with an acceleration of 0.3m/s after one minute what will be it's velocity? |
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Answer» 18m/sExplanation:by USING EQUATION of MOTION v=u+athere u-0 t-1min(60S) |
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| 7. |
An object is placed at a distance of 10 cm on the principal axis of a convex lens whose focal length is less than 10cm ,then the image of it . observed at a distance of 30cm from the lens.find the nature and magnification of the image |
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Answer» Distance = 10cm VIRTUAL image = Distance /FOCAL length = 10cm/10cm =1Explanation:distance +PONT = focal length * LENS |
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| 8. |
(9) 778 D) 77807800 kgA SANT AD, UWlay len5 m/scannon of mass 1300 kg hres 80 kg ball in a horizontal direction withspeed of 33 m/s relative to the cannon, The velocity of the recoiling tann.A8/ות ווווווווווווווווווון 48ההההההההההה(A) 2,9333(C) 3.0983(B) 2.7848(D) 6None of these13600 kg 34qyterRIA a well, 1321 192 1500 m/s - 444, 9100 kg p er la |
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Answer» zhststgshfjfkdldgsextzzjozzgzgwxecezFzhzyyhtyhyshwye7ruff6 aata how the brain works with bread and protein and is not USED to TREAT it with bread or f it is also a man in the DIET and SEEK a diet of a CERTAIN type and is not a substitute for each person in a 3 his own and 2AM in a different way to exercis and to loose a man who has not just died from the heart of a father of a father of a father and father and son and his father of the 2AM of a man and his son and son 6 from 6AM and his son and ur75 4th son of a 573rd 7 century family of |
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| 9. |
Electroplating has several uses. How is it used inthe purification of metals ? |
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Answer» The overall PROCESS of electroplating uses an electrolytic cell, which consists of putting a negative charge on the metal and DIPPING it into a solution that CONTAINS metal salt (electrolytes) which CONTAIN positively charged metal IONS . |
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| 10. |
State two factors upon which the heat absorbed by a body depends |
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Answer» Heat ABSORBED by a body DEPENDS on the mass of the body and the specific heat CAPACITY of the body. |
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| 11. |
the velocity of sound in air is 360m/s while in water is 1440m/s . if the wavelength of sound in air is 2cm that in water is |
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Answer» velocity=frequency X wavelength 360=frequency x 0.02 frequency=360/0.02=18000 HZ (In AIR)velocity=frequency x wavelength 1440=18000 x wavelengthTherefore, wavelength in water=1440/18000=0.8 HzPlease MARK it BRAINLIEST, it means a lot |
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| 12. |
What is physical state |
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Answer» ee states of matter are the three DISTINCT PHYSICAL forms that matter can TAKE in most environments: solid, liquid, and gas. In extreme environments, other states MAY be present, such as plasma, Bose-Einstein condensates, and neutron stars.⚠ |
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| 13. |
The equation of a travelling plane sound wave is y=60cos(1800t-5.3x) where y is in micrometer ,t in seconds,and x in metres . The ratio of the maximum particle velocity to the velocity of wave propagation is:. |
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Answer» ation of a travelling plane sound wave has the form, where y is in micrometres, t in seconds and x in metres. Find |
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| 14. |
An electric generator consists of a 10-turn square wire loop of side 50cm. The loop is turned so as to produce 50 Hz A.C. How strong must the magnetic field be for the peak output voltage to be 300 V? a) 2.4Tb) 0.417Tc)2.62Td)0.382T |
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Answer» In which CLASS you are..... |
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| 15. |
What will be the acceleration due to gravity of feather and coin when they are dropped in vaccum??? |
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Answer» The coin will FALL rapidly whereas the FEATHER will float in AIR as it has SPACES in it. |
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| 16. |
Plusone physics all chapters weightage |
| Answer» PLS READ EVERYTHING I are which bord If it is iscThen first till rotational mechanics WEIGHT AGE is moreExplanation: | |
| 17. |
Which of the following statements are correct about personal space? |
| Answer» QUES is INCOMPLETE PLZ MAKE the ques CORRECT ✌✌✌ | |
| 18. |
Derive the lens maker formula in case of double convex lens 3 marks |
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Answer» Step-by-step Explanation:Consider FIGURE with the two refracting surfaces having radii of CURVATURE equal to and , respectively. Now, using the result that we OBTAINED for REFRACTION at single spherical surface, we getFor the first surface, For the second surface, Adding Eqs. (1) and (2), we getIn the above equation, if the object is at infinity and image is formed at the focus, then Therefore, |
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| 19. |
How can we find the change in momentum |
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Answer» tion:If the force ACTS, for INSTANCE, for 5 seconds: 50 × 5 = 250. This is the object's change in VELOCITY, measured in m/s. Multiply the object's change in velocity by its mass: 250 × 20 = 5,000. This is the object's change in momentum, measured in kg m/s.... |
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| 20. |
For a projectile the ratio of maximum height reach to the square of time of flight is |
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Answer» if you LIKE it then MARK as brainlliestand THANKS for ASKING this QUESTIONEXPLANATION:✌️ |
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| 21. |
Explanation of general relativity |
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Answer» The general theory of relativity (or general relativity for short) is a major building BLOCK of MODERN PHYSICS. It EXPLAINS gravity based on the way space can 'curve', or, to put it more ACCURATELY, it associates the force of gravity with the changing geometry of space-time.Hope this helps. |
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| 22. |
a projectile thrown with velocity v0 at an angle x to the horizontal as a range R .It will strick a verticle wall at a distance R/2 from the point of projectile with a speed of |
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Answer» ethod:-The PROJECTILE ATTAINS maximum height at half of its horizontal range, i.e., at distance from the point of projection, so that the vertical VELOCITY component becomes ZERO at that position. Hence the velocity with which the projectile hits the vertical wall is,This is the velocity attained by the projectile at the maximum height, we know it. Actual method:-When the projectile travels distance towards the vertical wall, the horizontal velocity at that point is given by,The height (vertical displacement, in other WORDS) attained by the projectile at the point is given by,But we know that,Then (1) becomes,Hence the vertical velocity at that point is given by,Therefore the net velocity with which the projectile hits the vertical wall is, |
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| 23. |
Important chapters of physics icse 2020 class 10 board |
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Answer» ng to the ICSE syllabus for Class 10 some of the IMPORTANT chapters of PHYSICS INCLUDE Heat, Light, Sound, Modern Physics, Force Work ENERGY & Power and Electricity & Magnetism. |
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| 24. |
What do you mean by diffraction of light |
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Answer» tion:DIFFRACTION is the slight bending of LIGHT as it passes around the edge of an OBJECT. The amount of bending depends on the relative size of the wavelength of light to the size of the opening. ... Optical EFFECTS resulting from diffraction are produced through the interference of light WAVES. |
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| 25. |
(41/A convex lens is used to throw on a screen 10m from the lens , a magnifies image of an object. If the magnification is to be 19, find the focal length of the lens. |
| Answer» HELLO!!! SEE the IMAGE will be HELPFUL for you ✌️✌️✌️ | |
| 26. |
प्रश्न 5 विद्युत चुम्बकीय तरंगे किसे कहते है ? |
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Answer» tion:one of the WAVES that are PROPAGATED by simultaneous PERIODIC variations of electric and magnetic field INTENSITY and that includes RADIO waves infrared visible light ultraviolet X rays and gamma rays |
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| 27. |
Calculate the efficiency of carnot engine and explain why the efficiency of an irreversible engine is small |
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Answer» sible ENGINES are the ones that UNDERGOES loss of energy in DUE COURSE of operation. Now we can see that there is loss of energy in form of heat/ friction. Now since the losses in case of irreversible is present so naturally its efficiency will be less as compared to reversible ones.Hope it helps..... |
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| 28. |
(a) 0 (c) 11(a) 25uA and 2.8 V(C) 20uA and 3.5 V(b) 25uA and 3.5 V(d) 20uA and 2.8 V |
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Answer» (a) 0(c) 11(a) 25uA and 2.8 V(C) 20uA and 3.5 V(b) 25uA and 3.5 V(d) 20uA and 2.8 VExplanation:THANKS sir you can get it DONE before to speak Japanese and ENGLISH LANGUAGE is English and French doors open to all those years the |
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| 29. |
In bhors model of h atom the ratio between the period of evolution of an electron in the orbi of n is 1 to the period of revolution of the electron in orbit n is 2 is |
| Answer» TION:this is by USING EQUATIONS SHOWN in the CLIP | |
| 30. |
Which method is used to remove temporary hardness of water |
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Answer» Temporary hardness PRESENT in the WATER can be removed by heating HARD water and treating it with LIME water. |
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| 31. |
A car moving with a velocity of 10 m/s can be stopped by the application of a constant force F in a distance of 20 m .if the velocity of the car is 30 m/s .it can be stopped by this force in |
| Answer» CONSTANT FORCE MEAN constant ACCELERATION | |
| 32. |
Which defect of eye is known as far sighted ness |
| Answer» HYPERMETROPIA is CORRECT ANWER | |
| 33. |
A block of mass 500g is pulled from rest on horizontal friction less bench steady force and travel 8m in2s. find the acceleration |
| Answer» 2M per SEC SQUARE EXPLANATION:by 2nd equation of motion hope the ANSWER will help you Mark | |
| 34. |
The distance of the object from a concave mirror of focal length 10 cm so that image size is four times the size of the object will be (multi option)a) 12.5 cmb) 10 cmc) 7.5 cmd) 15 cmVarsity Education Management Pvt. Ltd. |
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| 35. |
5) The peripheral nervous system consists of parts. A) Spinal nerves B) Cranial nerves C) Both A & BD)brain, spinal cord , A & B both.6) Read the statements & find the correct onep) forebrain has centers for hearing, smell & memoryq) salivation, vomiting, blood pressure are controlled by cerebrumr) cell body in neuron converts electrical signal into chemical signals.s) spinal cord originates from cerebellum.A) P & Q B)P, Q & R. C) P&R D) P, Q,&S7) The two hormones which act on a common target organ as liver are&A) Thyroxine & adrenalineC) Insulin hormone & adrenalineB) Thyroxine & ParatharmoneD) Insulin & Thyroxine |
| Answer» 5 ka A HAI 6 ka C hai 7 ka B hai | |
| 36. |
Physics sample paper class 10 |
| Answer» TION:SEARCH in manabadi.inwev SITE there you can have BUNDLES of PAPERS | |
| 37. |
How many quadrilaterals can be formed joining the vertices of a polygon of 9 sides |
| Answer» TION:nanogon can be FORMED by JOINING it | |
| 38. |
If a wire of metal having young module Y is cut in to two equal pieces in what ratio the young module change |
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| 39. |
An object is lifted to a height of 1m its gravitational potential energy is 25j calculate uts height when its gravitational potential energy is doubled |
| Answer» 789 mExplanation: | |
| 40. |
What do you mean by instantaneous power |
| Answer» EXPLANATION:At any MOMENT of POWER is CALLED INSTANTANEOUS power | |
| 41. |
4. (a) Write and prove the conservation of liner momentum (b) From a rifle of mass 4 kg a bullet of mass 50 gms is fired with an initial velocity of 35m/s. Calculate the initial recoil velocity of the rifle.Lambiantenho dotecodingmod |
| Answer» TION: ANSWER B) HOPE this is HELPFUL to you | |
| 42. |
A body is moving unidirectonal under the influence of a source of constant power, Its displacement in time 't' is proportional toa)t¹/²b)tc)t³/²d)t² |
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| 43. |
an electric bulb draws a current of 0.2A when the voltage is 220V.calculate the amount of electric charge in 1hr |
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Answer» 720cExplanation:As Q = I × tAs Q = I × t :. Q = 0.2 A × 1 hourAs Q = I × t :. Q = 0.2 A × 1 hour = 0.2 A × 3600 SAS Q = I × t :. Q = 0.2 A × 1 hour = 0.2 A × 3600 s = 720 C. |
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| 44. |
How to integrate an equation of velocity ............ |
| Answer» U should SPECIFY which EQUATION of VELOCITY are you TALKING about | |
| 45. |
Which is more stable? CH2=CH2+ AND CH3CH2+ |
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Answer» I think it will be 2 nd .Explanation:because positive CHARGE is STABLE on SINGLE bond |
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| 46. |
What will happen to the loudness if the amplitude is increased by the factor 2 |
| Answer» INTENSITY of the sound WAVES is directly proportional to the square of the amplitude of the waves meaning LOUDNESS of sound is directly proportional to the square of the amplitude so, if u DOUBLE the amplitude of the wave then, the sound will become 4 times louder. | |
| 47. |
8 mercury drops coalesce to form 1 mercury drop the surface energy changes by a factor of: a)1 b)2 c)4 d)6..... |
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Answer» the answer is OPTION C)4PLEASE MARK it as a BRAINLIEST answer |
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| 49. |
What are recycling codes |
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Answer» ng codes are used to IDENTIFY the material from which an item is made, to FACILITATE easier RECYCLING or other reprocessing.PLZ FOLLOW ME FRIEND AND MARK THIS ANSWER AS A BRAINLIST ANSWER |
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| 50. |
What is meant by plasma approximation? |
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Answer» The PLASMA approximation: Charged particles must be close enough together that each PARTICLE INFLUENCES many NEARBY charged particles, rather than just the interacting with the closest particle (these collective effects are a distinguishing feature of a plasma). |
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