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. |
State ohm’s law and what are non-Ohmic conductors |
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Answer» Hii frnd here's the answer to the given question |
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| 2. |
Work function of a metal is 4.2ev .the cutoff wavelength is |
| Answer» 1472 ARMSTRONG should be the ANSWER. | |
| 3. |
A body is subjected to two normal stresses 20 kN/m2 (tensile) and 10 kN/m2 (compressive) acting perpendicular to each other. The maximum shear stress is * |
| Answer» SRY no ANS is the QUESTION CORRECT | |
| 4. |
The solar spectrum during a complete solar eclipse is [Kerala PET 2002]A) Continuous B) Emission line C) Dark line D) Dark band |
| Answer» C) DARK LINE is RYT ANS .. | |
| 5. |
In the formation of a rainbow light from the sun on water droplets undergoes [CBSE PMT 2000; Orissa JEE 2002; MP PET 2003; KCET 2004]A) Dispersion only B) Only total internal reflection C) Dispersion and total internal reflection D) None of these |
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Answer» Ans is C) dispersion and TOTAL internal REFLECTION |
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| 6. |
In the given figure what is the ratio of current in A1 and A2 |
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Answer» ANS in a1 CURRENT is FLOW LIKE 1/2 and in a2current flow 1 |
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| 7. |
What is the Electronic Theory of Frictional Electricity????( Give short answer) |
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Answer» In an ATOM the net charge is Zero. In any atom there is a NUCLEUS and electron revolves AROUND it. When nucleus was separated from an atom it was found that the electrons carry NEGATIVE charges. Since, an atom is neutral and electrons are negative so it was concluded that nucleus is positively charged. |
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| 8. |
Displacement is a which quantity where as distance is which quantity |
| Answer» DISPLACEMENT is a VECTOR QUANTITY where as DISTANCE is a SCALAR quantity. | |
| 9. |
A body falls from hieight H and travel 9h/25 in last second find height |
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Answer» Let's FIND the start velocity of the last second journey : time t = 1 sec, distance covered s = 9h/25 m Using the equation : s = ut + 0.5gt^2 9h/25 = u(1) + 0.5*g*(1)^2 u = 9h/25 - g/2 This initial velocity u of the last second is the final velocity v of the journey prior to last sec. For prior journey : v = 9h/25 - g/2 The start of this prior journey began with u = 0. Our aim is now to find how MUCH distance s’ covered here - v^2 = u^2 + 2gs’ (9h/25 - g/2)^2 = 0 + 2gs’ s' = (9h/25 - g/2)^2 / 2g The total height of fall h is given by s' + 9h/25 h = s' + 9h/25 h= ((9h/25 + g/2)^2)/2g + 9h/25 This is a quadratic equation in h/g. Let h/g = y, then (9y/25)^2 - 41y/25 + 1/4 = 0 Solving this quadratic equation GIVES two values y1 = 25/2 and y2 = 25/162 (Both valid) Resubstitute y = h/g h/g = 25/2 and 25/162 h = 25g/2 and 25g/162 This two HEIGHTS satisfy the condition that in the last second of their respective falls covers 9/25th fraction of their total heights. mark brainliest |
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| 10. |
A block with a mass of 30kg is under a force of 100N.Find if the block remains in equilibrium or not |
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Answer» The BLOCK REMAINS EQUILIBRIUM |
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| 11. |
Abc wire drawing co is interested to develop the resistance heating method of |
| Answer» RESISTANCE WATER because I don't KNOW the ANSWER | |
| 12. |
A wooden table is considered as a solid because |
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Answer» Heya DEAR frnd here is your answer |
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| 13. |
For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of the prism. The angle of the prism is [CBSE PMT 2001]A) 80o B) 70o C) 60o D) 50o |
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| 14. |
The spectrum obtained from an electric lamp or red hot heater is [BHU 2001; Pb. PET 2003]A) Line spectrum B) Band spectrum C) Absorption spectrum D) Continuous spectrum |
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Answer» The spectrum obtained from an ELECTRIC lamp or RED hot heater is |
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| 16. |
2. An electron travelling with a speed of 5 x 103 m/s passes through an electric field with an acceleration of 1012 m /s2. How long will it lake for the electron to double its speed? |
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Answer» Dear Student,Please find below the solution to the asked QUERY: Final VELOCITY:v=u+att=v−UA =2u−ua =ua =5×1031012 =5×10−9 sHope this INFORMATION will clear your doubts about Mechanics If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as POSSIBLE |
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| 17. |
A ball is dropped in a tunnel made through the earth. time taken for it to reach the centre is |
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Answer» A few people have already mentioned that under totally unrealistic, very Physics 101 conditions (no friction or air resistance, perfectly spherical Earth with uniform DENSITY throughout), what you throw in will exhibit simple harmonic motion. I think it's a cool derivation, so I'll present it here. |
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| 18. |
At what frequencies horn antenna are used? |
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| 19. |
Dispersion of light is due to [DCE 1999]A) Wavelength B) Intensity of light C) Density of medium D) None of these |
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| 21. |
The ratio of Angle of deviation from a thin prism with respect to air and when dipped in water will be? |
| Answer» U can SEARCH in GOOGLE,can it HELP u | |
| 22. |
a person going in a train releases the ball from his hand in a vertically upwards direction will the ball fall back or will it come in throwers hand?? |
| Answer» FALL BACK is your ANSWER. | |
| 23. |
Stars are not visible in the day time because [JIPMER 1997]A) Stars hide behind the sun B) Stars do not reflect sun rays during day C) Stars vanish during the day D) Atmosphere scatters sunlight into a blanket of extreme brightness through which faint stars cannot be visible |
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Answer» ANSWER is D mark me BRAINLIEST |
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| 24. |
Fraunhofer spectrum is a [KCET 1993, 94; RPET 1997; MP PET 1997, 2001; JIPMER 2000; AIIMS 2001]A) Line absorption spectrum B) Band absorption spectrum C) Line emission spectrum D) Band emission spectrum |
| Answer» B) BAND ABSORPTION SPECTRUM | |
| 25. |
Which of the following colours suffers maximum deviation in a prism [KCET 1998; DPMT 2000]A) Yellow B) Blue C) Green D) Orange |
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| 26. |
I want sl arora physics solution |
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Answer» And also refer physics GALAXY channel in youtube U can find aolutions there |
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| 27. |
Line spectra are due to [EAMCET (Med.) 1995]A) Hot solids B) Atoms in gaseous state C) Molecules in gaseous state D) Liquid at low temperature |
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| 28. |
The splitting of white light into several colours on passing through a glass prism is due to [CPMT 1999]A) Refraction B) Reflection C) Interference D) Diffraction |
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Answer» (D)DIFFRACTION or DISPERSION. |
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| 29. |
For a medium, refractive indices for violet, red and yellow are 1.62, 1.52 and 1.55 respectively, then dispersive power of medium will be [RPET 1997]A) 0.65 B) 0.22 C) 0.18 D) 0.02 |
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| 30. |
Dark lines on solar spectrum are due to [EAMCET (Engg.) 1995]A) Lack of certain elements B) Black body radiation C) Absorption of certain wavelengths by outer layers D) Scattering |
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Answer» DARK LINES on SOLAR SPECTRUM are due to C) Absorption of certain wavelengths by OUTER layers |
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| 31. |
A white screen illuminated by green and red light appears to be [KCET 1994; RPMT 1997]A) Green B) Red C) Yellow D) White |
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| 32. |
1. A cyclist accelerates uniformly from rest at point A and reaches point Y at a velocity of 9 m/s. The cyclist covers the last 10 m of her ride in 2 s. Determine the acceleration of the cyclist? |
Answer» 4 m/s^2 is the acceleration of the cyclist.Explanation: Given that, v = 9 m/s s = 10 m As we know, Thus, 81 = 20a a = 81/20 ∵ a = 4.05 LEARN more: Find the acceleration |
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| 33. |
1. A cyclist accelerates uniformly from rest at point A and reaches point Y at a velocity of 9 m/s. The cyclist covers the last 10 m of her ride in 2 s. Determine the acceleration of the cyclist. |
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Answer» V=9 |
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| 34. |
Acceleration due to gravity at surface of earth is g. At what depth, the acceleration due to gravity becomes g/2 , if radius of earth is Re ? |
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Answer» Hey DEAR, ● Answer - DEPTH = Re/2 ● Explanation - LET g' be the acceleration due to GRAVITY at depth d. g' = g (1 - d/Re) g/2 = g (1 - d/Re) 1/2 = 1 - d/Re d/R = 1 - 1/2 d = Re/2 Therefore, acceleration due to gravity will be g/2 at the depth of Re/2. Hope this helped you. |
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| 35. |
What is the amount of heat energy required to raise 1kg of lead to 10degree celcius |
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Answer» Dear Student |
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| 36. |
White light is passed through a prism whose angle is 5?. If the refractive indices for rays of red and blue colour are respectively 1.64 and 1.66, the angle of deviation between the two colours will be [MP PET 1997]A) 0.1 degree B) 0.2 degree C) 0.3 degree D) 0.4 degree |
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Answer» The answer to question 31, Conditions necessary to observe a rainbow: (1) The SUN should be behind us. (2) It should have rained and the Sun should be present. |
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| 37. |
A neon sign does not produce [MP PET 1996; UPSEAT 2004]A) Line spectrum B) An emission spectrum C) An absorption spectrum D) Photons |
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| 38. |
From which source a continuous emission spectrum and a line absorption spectrum are simultaneously obtained [MP PMT 1997]A) Bunsen burner flame B) The sun C) Tube light D) Hot filament of an electric bulb |
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| 40. |
A material is called ductile if its elongation |
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Answer» Brittle – a property applicable to a material if fracture occurs soon after the elastic limit is passed |
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| 41. |
A ray passes through a prism of angle 60? in minimum deviation position and suffers a deviation of 30?. What is the angle of incidence on the prism [MP PMT 1995; Pb. PMT 2001; RPMT 2003]A) 30? B) 45? C) 60? D) 90? |
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Answer» RAY PASSES through the pyoerem |
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| 42. |
Line spectrum contains information about [MP PET 1995]A) The atoms of the prism B) The atoms of the source C) The molecules of the source D) The atoms as well as molecules of the source |
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| 43. |
A source emits light of wavelength 4700?, 5400 ? and 6500 ?. The light passes through red glass before being tested by a spectrometer. Which wavelength is seen in the spectrum [MP PMT 1995]A) 6500\,\,{\AA} B) 5400\,\,{\AA} C) 4700\,\,{\AA} D) All the above |
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Answer» All the above is the ANSWER |
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| 44. |
At sun rise or sunset, the sun looks more red than at mid-day because [AFMC 1995; Similar to DCE 2003]A) The sun is hottest at these times B) Of the scattering of light C) Of the effects of refraction D) Of the effects of diffraction |
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| 45. |
Advantages of polymer concrete above other |
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Answer» # High RESISTANCE to ABRASION and chemical ATTACK |
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| 46. |
The density of iron is 7.8g/cm3 what do you mean by this statement |
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Answer» It means that its RELATIVE DENSITY is more than water and will SINK in it |
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| 47. |
. Air inside a closed container is saturated with water vapour. The air pressure is p and the saturated vapour pressure of water is If the mixture is compressed to one half of its volume by maintaining temperature constant, the pressure becomes |
| Answer» CONSTANT because TEMPERATURE is constant | |
| 48. |
What will be the colour of sky as seen from the earth, if there were no atmosphere [MP PMT 1992]A) Black B) Blue C) Orange D) Red |
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Answer» If there was no ATMOSPHERE then light COMING will not REFRACT and COLOUR will not be seen and we will see dark black SKY. |
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| 49. |
Emission spectrum of C{{O}_{2}}gas [MP PET 1992]A) Is a line spectrum B) Is a band spectrum C) Is a continuous spectrum D) Does not fall in the visible region |
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| 50. |
A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 3/4 of the angle of the prism. The angle of deviation is [MNR 1988; MP PMT 1999; Roorkee 2000; UPSEAT 2000; MP PET 2005]A) 45? B) 39? C) 20? D) 30? |
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Answer» Angle of prism is 60 as it is EQUILATERAL triangle |
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