The energy radiated by a black body at 2300 K is found to have maximum intensity at wavelength 1260 nm, its emissive power being 8000 W/m2. When the body is cooled to a temperature T K, the emissive power is found to decrease to 500 W/m2. Find the wavelength at which intensity of emission is maximum at the temperature T.

The energy radiated by a black body at 2300 K is found to have maximum

1.	The energy radiated by a black body at 2300 K is found to have maximum intensity at wavelength 1260 nm, its emissive power being 8000 W/m2. When the body is cooled to a temperature T K, the emissive power is found to decrease to 500 W/m2. Find the wavelength at which intensity of emission is maximum at the temperature T.
Answer» The energy radiated by a black body at $2300 K$ is found to have maximum intensity at wavelength $1260 nm$ , its emissive power being $8000 {W/m}^{2}$ . When the body is cooled to a temperature $T K$ , the emissive power is found to decrease to $500 {W/m}^{2}$ . Find the wavelength at which intensity of emission is maximum at the temperature $T$ .

Discussion

No Comment Found

Related InterviewSolutions

Two speakers S1 and S2 are derived from the same amplifier and placed at the same distance from x-axis as shown in figure. The speakers vibrate in phase at 680 Hz. A man stands at a point on the x-axis at a very large distance from the origin and starts moving parallel to the y-axis. The speed of sound is 340 m/s. Then, at what angle θ with the x− axis will the intensity of sound drop to a minimum for the first time?
A body started with velocity of 12 m/s and moving with an acceleration of 2 m/s2. The distance travelled by the body in the 8th second is
When the two identical cells are connected either in series or in parallel across a 4 ohm resistor they send the same current through it. The internal resistance of the cell is
A heavy particles is suspended by a string of length l from a fixed point O. The particle is given a horizontal velocity v0 the string slack at some angle and the particle proceeds on a parabola. Find the value of v0 if the particle passes through the point of suspension.
A flywheel is rotating about a fixed axis passing through its COM. It has a kinetic energy of 420 Joules when its angular speed is 20 rad/s. The moment of inertia of the wheel about the fixed axis is
A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A, records a frequency of 5.5 kHz while the train approaches the siren. During his return journey in a different train B, he records a frequency of 6.0 kHz while approaching the same siren. The ratio of the velocity of train B to that of train A is
One fourth length of a uniform rod of length 2l and mass m is placed on a horizontal table and the rod is held horizontal. The rod is released from rest. Find the normal reaction on the rod as soon as the rod is released
A force F=(5√3^i+5^j) N is acting on a body at point (1,1)m. Calculate torque of this body w.r.t to point (1,0) m
Two bodies of masses 3 kg and 5 kg are moving with velocities 25 m/s and 15 m/s towards each other due to mutual force of attraction as shown in the figure. What is the velocity of their center of mass?
The capacitance of a parallel plate air condenser is 2 μ F. A dielectric of constant 4 is introduced as shown in the figure to fill half the space between the parallel plates. Its capacitance now will be?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment