331. Energy conservation means-

1. Generation and destruction of energy
2. Energy could be created
3. Energy could not be created but destroyed
4. Energy can neither be created nor destroyed

Option “4” is correct.
Law of Conservation of Energy means Energy can neither be created nor be destroyed, rather it can only be transformed from one form to another.
332. When light passes from one medium to another, this phenomenon of change in its direction is called _____.

1. Refraction
2. Diffraction
3. Propagation
4. No option is correct

Option “1” is correct.
Refraction is the bending of light as it passes from one medium to another. The bending is caused by the differences in density between the two substances.
333. Who invented world’s first true radar and demonstrated its use?

1. Fred Morrison
2. A. H. Taylor and Leo C. Young
3. Van Tassel
4. W. K. Roentgen

Option “2” is correct.
A H Taylor and Leo C Young are inventor of first true radar.
334. When we see an object, the image formed on the retina is ________.

1. Real and inverted
2. Real and erect
3. Virtual and erect
4. Virtual and inverted

Option “1” is correct.
When we see an object, the image formed on the retina is real and inverted.
335. Kinetic energy depends on-

1. the velocity or speed of the moving body
2. the mass of the moving body
3. the pressure of the moving body
4. both mass and velocity of the moving body

Option “4” is correct.
The amount of translational kinetic energy that an object has depends upon two variables: the mass (m) of the object and the speed (v) of the object.
336. In which form is the supplied heat energy stored during change in temperature of substance?

1. Heat energy
2. Kinetic energy
3. Potential energy
4. Both kinetic and potential energy

Option “4” is correct.
Kinetic Energy is form of energy which is the supplied heat energy stored during change in temperature of substance.
337. A galvanometer can be converted into a voltmeter by connecting with it a –

1. High resistance in parallel
2. Low resistance in parallel
3. High resistance in series
4. Low resistance in series

Option “3” is correct.
In order to convert a Galvanometer into voltmeter, a very high resistance known as “series resistance” is connected in series with the galvanometer.
338. Even after sunset, the air near the Earth’s surface continues to receive heat due to:

1. Insolation
2. Terrestrial Radiation
3. Conduction
4. Convection

Option “2” is correct.
Even after sunset, the air near the Earth’s surface continues to receive heat due to Terrestrial Radiation.
339. Assertion (A) : kinematic viscosity of all liquids increases as temperature of liquids increases
Reason (R) : Rise of temperature increases kinetic energy of molecules.Code:1. Both (A) and (R) are true, and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Option “4” is correct.
It is observed that kinematic viscosity of all liquids decreases as temperature of liquids increases and vice versa. This is due to temperature rise of molecules of which causes decrease in cohesive forces of the molecules. The increase in temperature causes the kinetic or thermal energy to increase and the molecules become more movable.
340. Food gets cooked faster in a pressure cooker because-

1. Water starts boiling at a lower temperature due to high pressure
2. Water starts boiling at a higher temperature due to high pressure
3. Water boils only at 100° C but the heat content is higher at high pressure
4. Convection currents are set inside the cooker

Option “2” is correct.
Food can be cooked faster in a pressure cooker since the boiling point of water increases with pressure. As the water boils, the steam produced cannot evaporate so the pressure inside the cooker increases. At higher elevations, atmospheric pressure is lower and therefore water boils at lower temperature.
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

68 thoughts on “Physics”

  8. Dolly.

    Hi I’m dolly..
    Jo bhi lok ye app download krk pdhai krr kre hai vo unka future boht hi jyada bright hone vala hai.. because baat free off cost prhne ki nahi hai,baat kaise study krne ki hai…fhir chahe vo jaise bhi ho…main sbko bss itna hi kehna chahti hu ke boh ache se iss app ka use kro and kisi bhi competitive exam ke liye ye app boht acha hai…and please comment jrur chod ke jna .. thank you

  10. lista escape roomów

    hey there and thank you for your info – I’ve certainly picked up something
    new from right here. I did however expertise several technical points using this website, as I experienced
    to reload the website lots of times previous to I could
    get it to load correctly. I had been wondering if your hosting is OK?
    Not that I am complaining, but sluggish loading instances times will very frequently affect your
    placement in google and can damage your high quality score if advertising and marketing
    with Adwords. Anyway I am adding this RSS to my e-mail and can look out for much more of your respective intriguing content.
    Make sure you update this again soon.. Escape rooms hub

  52. JamesHat

    ¡Saludos, apostadores entusiastas !
    casinosextranjero.es – juega desde el extranjero – п»їhttps://casinosextranjero.es/ п»їcasinos online extranjeros
    ¡Que vivas increíbles recompensas sorprendentes !

  54. quantkiolanthe

    Why It’s Collectable Tudor quietly dabbles in link making watches with logo-dialed watches for companies. These Air France editions are two of only a handful and they’re executed very well. It’s not a very “Rolex” practice to create limited editions today but Tudor has been active in this space making these watches highly sought-after by collectors.

  55. ramyadvictoria

    Malaika My style is 50 percent girl in link her late teens trying to get into a bar 25 percent eight-year-old boy in overalls 25 percent aspirational adult. Style-wise this is the watch for the adult in me.

  57. thadeawbonnie

    Believe it or not there is a method to the madness of this column link and the ordering of every week’s picks factors into it. Sometimes it’s fun to build up to something big and sign off for the week with a bang but other times the proverbial big kahuna is so good that you can’t help but spill the beans early. This week I thought I’d come right out of the gate with what’s undoubtedly one of the most impressive watches to be offered this year. And no it’s not a Rolex or a Patek.

  58. alysaxhadley

    All of a sudden everybody knows what a Crash is and slowly people are learning about other B-side hits from link the watchmaker of shapes. “The entire Cartier vintage history is so ripe for the plucking” watch dealer and Internet personality Mike Nouveau astutely pointed out. “There’s so much cool stuff to pick from their back catalog that they maybe made 10 of and that’s it.”

  63. Kennethdyeta

    ¡Saludos, exploradores de la fortuna !
    Casinos extranjeros con bonos sin depГіsito inicial – п»їhttps://casinoextranjerosdeespana.es/ casino online extranjero
    ¡Que experimentes maravillosas premios excepcionales !

  64. Waltersoaxy

    Hello keepers of pristine spaces !
    Best Air Purifier for Smoke Large Rooms – Top 10 List – п»їhttps://bestairpurifierforcigarettesmoke.guru/ air purifier for smoke smell
    May you experience remarkable magnificent freshness !

  67. DanielSlUrf

    ¡Saludos, buscadores de tesoros escondidos !
    Casino sin licencia EspaГ±a con privacidad total – п»їemausong.es mejores casinos sin licencia en espaГ±a
    ¡Que disfrutes de increíbles giros exitosos !

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top