General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 9)
9.
Light from the Sun reaches us in nearly
Discussion:
14 comments Page 1 of 2.
Payal said:
1 decade ago
Distance b/w Earth & Sun [D]= 15*10^7 km.
Speed of light in vacuum [v]= 3*10^8 km/sec.
Let time taken by sunlight to reach earth = T.
We know that,
V=D/T or T=D/V.
That means T=15*10^7 / 3*10^8.
= 5*10^-1 sec or 5*10^-1/60 min.
= 8.3 min.
Speed of light in vacuum [v]= 3*10^8 km/sec.
Let time taken by sunlight to reach earth = T.
We know that,
V=D/T or T=D/V.
That means T=15*10^7 / 3*10^8.
= 5*10^-1 sec or 5*10^-1/60 min.
= 8.3 min.
Mahesh Verma said:
1 decade ago
Speed of light = 3x10^8 m/s.
Distance between the earth & the Sun is = 150000000 KM.
So the time taken by light to cover this.
Distance is = 150000000000 m/3x10^8 m/s => 500 sec. /60 => 8 min. 20 sec.
Distance between the earth & the Sun is = 150000000 KM.
So the time taken by light to cover this.
Distance is = 150000000000 m/3x10^8 m/s => 500 sec. /60 => 8 min. 20 sec.
Nitesh namdev said:
1 decade ago
Distance of sun from earth = 150,000,000 km.
Speed of light = 3,00,000 km/sec = 18,000,000 km/minute.
So time taken by sunlight to reach earth = (150,000,000 / 18,000,000) minute = 8.3 min.
Speed of light = 3,00,000 km/sec = 18,000,000 km/minute.
So time taken by sunlight to reach earth = (150,000,000 / 18,000,000) minute = 8.3 min.
Sanjaya Kumar Tunga said:
1 decade ago
Distance of sun from earth = 150,000,000 km
Speed of light = 3,00,000 km/sec = 18,000,000km/minute
So time taken by sunlight to reach earth = (150,000,000 / 18,000,000) minute = 8.3 min
Speed of light = 3,00,000 km/sec = 18,000,000km/minute
So time taken by sunlight to reach earth = (150,000,000 / 18,000,000) minute = 8.3 min
Tamanna kochar said:
1 decade ago
Delay is due to difference in densities of layers. i.e., when sun rises at horizon its rays gets somewhat deflected due to which they have to cover more area to reach our eyes.
Alamthegreat said:
1 decade ago
The light of sun reaches earth exactly at 9 minutes 19 seconds. It has increased because the light energy has decreased so it take more time reach now.
Nageshwarreddy said:
8 years ago
The distance between the sun and earth is not same in a year, then how can we calculate time taken for light to reach earth?
Manu said:
1 decade ago
The sunling is very powerful and very long from our eyesight, that's why much time to reach the light from here.
Abd'Raheem zainab said:
10 years ago
So will the light energy continue to decrease? If so where are we heading to on this earth?
Gana said:
8 months ago
The light that comes from the sun takes 8 minutes and 20 seconds so option A is correct.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers