351. A 100 watt electric bulb is used for 10 hours. What will be the cost of electricity consumed, if the consumption cost is Rs. 5 per unit?

1. Rs. 5
2. Rs. 10
3. Rs. 25
4. Rs. 50

Option “1” is correct.
Energy Consumption of 100 watt electric bulb which is used for 10 hours = 100 × 10
= 1000 watt hour
= 1 kilo watt hour
= 1 unit.
According to question the cost of 1 unit of electricity = Rs. 5
352. Which of the following metals is used as filament in lighting bulbs?

1. Iron
2. Molybdenum
3. Silver
4. Tungsten

Option “4” is correct.
Tungsten metal is used as filament in lighting bulbs.
353. The principle of atomic bomb is based on-

1. Nuclear fusion
2. Nuclear Fission
3. Above both
4. Above none

Option “2” is correct.
The principle of atomic bomb is based on nuclear fission while fusion weapons are referred as thermonuclear bombs or hydrogen bomb.
354. The unit of power is-

1. Hertz
2. Volts
3. Watt
4. Neutrons

Option “3” is correct.
In the field of Physics watt is measurement of power, describing the rate at which electricity is being used at a specific moment.
355. Optical fibre works on the principle of :

1. Total internal reflection
2. Refraction
3. Scattering
4. Interference

Option “1” is correct.
The optical fibre is a very thin strand of glass or plastic cable for transmitting light from one point to another. They work on the principle of total internal reflection. There is no loss of signal through an optical fibre.
356. At what degree are the Centigrade and Fahrenheit temperatures the same?

1. 100°
2. 80°
3. –32°
4. –40°

Option “4” is correct.
The temperature when both the Centigrade and Fahrenheit scales are same is -40 degrees.
357. When a ship floats on water

1. It displaces no water
2. The mass of water displaced is equal to the mass of the ship
3. The mass of water displaced is lesser than the mass of the ship
4. The mass of water displaced is greater than the mass of the ship

Option “2” is correct.
According to Archimedes principle when a body is immersed fully or partially in a liquid, it experiences an upward force that is equal to the weight of the fluid displaced by it therefore the mass of water displaced is equal to the mass of the ship.
358. Which among the following determines the pitch of a sound?

1. Amplitude
2. Frequency
3. Loudness
4. Wavelength

Option “2” is correct.
While frequency measures the cycle rate of the physical waveform, pitch is how high or low it sounds when you hear it. Pitch and Frequency are related to each other. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave.
359. Which phenomena show the particle nature of light?

1. Diffraction
2. Interference
3. Photoelectric effect
4. Polarization

Option “3” is correct.
The photoelectric effect is an phenomenon in which the emission of electrons occurs when a beam of light strikes a metal or a cathode surface. For emissions of electrons frequency of incident light is required to be greater than a minimum value called Threshold Frequency. Thus, show particle nature of light.
360. Electric Motor converts _____ energy to mechanical energy.

1. Sound
2. Mechanical
3. Chemical
4. Electrical

Option “4” is correct.
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
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