1800-150-456-789
FlagBACK
Flag Wave Optics> The luminous flux of a monochromatic sour...
question mark

The luminous flux of a monochromatic source of 1 W is 450 lumen watt-1. Find the relative luminosity at the wavelength emitted.

Hrishant Goswami , 11 Years ago
Grade 10
anser 1 Answers
Aditi Chauhan

Last Activity: 11 Years ago

Sol. The luminous flux of the given source of 1W is 450 lumen/watt ∴ Relative luminosity = Lu min ous flux of a source of given wavelength/ Lu min ous flux of 555 nm source of same power = 450/685 = 666% [∴ Since, luminous flux of 555nm source of 1W = 685 lumen]

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Other Related Questions on wave optics

question mark
An oscillator consists of a block of mass 512 g connected to a spring. When set into oscillation with amplitude 34.7 cm, it is observed to repeat its motion every 0.484 s. Find (a) the period, (b) the frequency, (c) the angular frequency, (d) the force constant, (e) the maximum speed, and ( f ) the maximum force exerted on the block.
wave optics
0 Answer Available

Last Activity: 3 Years ago

question mark
A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.
 
wave optics
0 Answer Available

Last Activity: 3 Years ago

question mark
A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.
wave optics
0 Answer Available

Last Activity: 3 Years ago

question mark
If V-numer of a multi mode fiber is 3. Calculate the no.of modes if it is step index and graded index fiber multimode fiber (rounded off)?
wave optics
1 Answer Available

Last Activity: 3 Years ago

question mark
What is the difference between angular position and angular fringe width... I always get confused .
wave optics
2 Answers Available

Last Activity: 3 Years ago