Home
Class 11
CHEMISTRY
Light waves travel with the speed of 3 x...

Light waves travel with the speed of `3 xx 10^(8) "m s"^(-1)`. Express the speed in miles are per hour.

Text Solution

Verified by Experts

The correct Answer is:
`6.75 xx 10^(8) "miles/hr"`
`1.6 xx 10^(3)m=1" mile" :. "conversion factor"=(("1 mol"))/((1.6xx10^(3)m))`
`3.6 xx 10^(3)s=1hr:. "conversion factor"=((1hr))/((3.6xx10^(3)s))`
`(3xx10^(8)m)/(1s)=((3xx10^(8)m)xx("conversion factor"))/(1sxx("conversion factor"))`
`=(3xx10^(8)m)xx(("1 mile"))/((1.6xx10^(3)m))xx(1)/((1s))xx((3.6xx10^(3)s))/((1hr))=6.75xx10^(8) "miles/hr"`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MOLE CONCEPT

    DINESH PUBLICATION|Exercise Competitive (MCQ)|45 Videos

  • MOLE CONCEPT

    DINESH PUBLICATION|Exercise JEE (Main)|31 Videos

  • MOLE CONCEPT

    DINESH PUBLICATION|Exercise Empirical molecular fromulae and chemical equations|8 Videos

  • HYDROGEN

    DINESH PUBLICATION|Exercise LONG|1 Videos

  • NOMENCLATURE OF ORGANIC COMPOUNDS

    DINESH PUBLICATION|Exercise MCQs|13 Videos

Similar Questions

Explore conceptually related problems

The distance from the Sun to the Earth is 1 AU = 1.5xx10^(11) . The speed of light is 3xx10^(8)ms^(-1) . Express the speed of light in terms of (a) AU per minute and (b) AU per second.

Light travels at a speed of 3 xx 10^8 m s^(-1) . How long does light take to reach the earth from the sun, which is 1.5 xx 10^11 m away?

Knowledge Check

  • Light travels with a speed of 3xx10^(8) m s^(-1) . The distance travelled by light in 1 femto second is

    A
    `0*03 mm`
    B
    `0*003 mm`
    C
    `3 mm`
    D
    `0*0003 mm`

  • Light travels with a speed of 2xx 10^(8)ms^(-1) in crown glass of refractive index 1.5. What is the speed of light in dense flint glass of refractive index 1.8 ?

    A
    `1.33 xx 10^(8) ms^(-1)`
    B
    `1.67 xx 10^(8) ms^(-1)`
    C
    `2.0 xx 10^(8) ms^(-1)`
    D
    `3.0 xx 10^(8) ms^(-1)`

  • Light travels through water with a speed of 2.25 xx 10^(8)m//s . What is the refractive index of water ? Given speed of light in vacuum = 3xx10^(8)m//s .

    A
    1.41
    B
    1.47
    C
    1.33
    D
    1.5

    • Similar Questions

    Explore conceptually related problems

    At 27^(@)C a gas contains 10 molecules travelling with a speed of 4 ms^(-1) , 20 molecules travelling with a speed of 5 m s^(-1) and 40 molecules travelling with a speed of 8 m s^(-1) . Calculate the average speed, root mean square speed and most probable speed of the gas at 27^(@)C .

    The speed to light is 300000000 m/s express the speed in standard form.

    A sound wave travels with a speed of 330 m s^(-1) in air. If the wavelength of the wave is 330 cm, then the frequency of the wave is_____

    Electro magnetic waves travel in a medium with speed of 2xx10^(8)m//sec . The relative permeability of the medium is 1 find relative permittivity.

    Elecromagnetic waves travel in a medium with a speed of 2xx10^(8)m//s .The relative permeability of the medium is 1. What is the relative permittivity of the medium-

    Home
    Profile