Home
Class 12
PHYSICS
Two electric lamps A and B radiate the s...

Two electric lamps A and B radiate the same power. Their filaments have the same dimensions and have emissivities `e_(A)` and `e_(B)` respectively. Their surface temperature are `T_(A) and T_(B)`. The ratio `(T_(A))/(T_(B))` will be equal to

A

`((e_(B))/(e_(A)))^(1//4)`

B

`((e_(B))/(e_(A)))^(1//2)`

C

`((e_(A))/(e_(B)))^(1//2)`

D

`((e_(A))/(e_(B)))^(1//4)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RACE

    ALLEN|Exercise Basic Maths (Thermal Physics) (Kinetic theory of gasess)|12 Videos

  • RACE

    ALLEN|Exercise Basic Maths (Thermal Physics) (Thermodynamic process)|20 Videos

  • RACE

    ALLEN|Exercise Basic Maths (Thermal Physics) (Calorimetry)|14 Videos

  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-III|28 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Example|1 Videos

Similar Questions

Explore conceptually related problems

Two electric lamps A and B radiate the same power. Their filaments have the same diemensions, and have emissivities. e_(A) and e_(B) . Their surface tempratures are T_(A) an T_(B) . The ratio T_(A)//T_(B) will be equal to

Boyle's temperature T_(b) is equal to

Three bodies A , B and C have equal surface area and thermal emissivities in the ratio e_(A) : e_(B) : e_(C) = 1 : (1)/(2): (1)/(4) . All the three bodies are radiating at same rate. Their wavelengths corresponding to maximum intensity are alpha_(A), alpha_(B) and alpha_(C) respectively and their temperatures are T_(A) , T_(B) and T_(C) on kelvin scale , then select the incorrect statement

Two spherical black bodies of radii R_(1) and R_(2) and with surface temperature T_(1) and T_(2) respectively radiate the same power. R_(1)//R_(2) must be equal to

Which physical quantities have the same dimensions of ML^(-1)T^(-2) ?

Two absolute scales A and B have triple points of water defined to be 200A and 350B . What is the relation between T_(A) and T_(B) ?

Two absolute scales A and B have triple points of water defined to be 200A and 350B . What is the relation between T_(A) and T_(B) ?

Two satellites A and B of masses m_(1) and m_(2)(m_(1)=2m_(2)) are moving in circular orbits of radii r_(1) and r_(2)(r_(1)=4r_(2)) , respectively, around the earth. If their periods are T_(A) and T_(B) , then the ratio T_(A)//T_(B) is

Two rods with the same dimensions have thermal conductivities in the ratio 1 : 2. they are arranged between heat reservoirs with the same temperature difference, in two different configurations, A and B. The rates of heat flow in A and B are I_(A) and I_(B) respectively. The ratio (I_(A))/I_(B)) is equal to

Two cars of same mass are moving with velocities v_(1) and v_(2) respectively. If they are stopped by supplying same breaking power in time t_(1) and t_(2) respectively then (v_(1))/(v_(2)) is