Home
Class 11
PHYSICS
Three discs, A, B and C having radii 2m,...

Three discs, A, B and C having radii 2m, 4m and6m respectively are coated with carbon black on their outer surfaces. The wavelengths corresponding to maximum intensity are `300nm, 400nm` and `500 nm`, respectively. The power radiated by them are `Q_A, Q_B and Q_C` respectively
(a) `Q_A` is maximum (b) `Q_B` is maximum (c) `Q_C` is maximum (d) `Q_A = Q_B = Q_C`

A

`Q_(A) ` is maximum

B

`Q_(B)` is maximum

C

`Q_(C)` is maximum

D

`Q_(A) = Q_(B) = Q_(C)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Three discs A, B and C having radii 2 m, 4m, and 6 m, respectively are coated with carbon black on their outer surfaces. The wavelengths corresponding to maximum intensity are 3 m, 4 m and 5 m respectively. The power radiated by them are P_(A),P_(B)andP_(C ) respectively. Find the ratio of powers emitted by the three discs.

Q. Identify the A,B,C and D.

Three concentric spherical shells A, B and C having uniformly distributed total charges +Q, -2Q and +Q respectively are placed as shown. The potential at the centre will be -

In figure, the charges on C_(1),C_(2) , and C_(3) , are Q_(1), Q_(2) , and Q_(3) , respectively. .

Two small conductors A and B are given charges q_(1) and q_(2) respectively. Now they are placed inside a hollow metallic conductor C carrying a charge Q. If all the three conductors A, B and C are connected by a conducting wire as shown, the charges on A,B and C will be respectively :

If a , b and c b respectively the pth , qth and rth terms of an A.P. prove that a(q-r) +b(r-p) +c (p-q) =0

The average of a, b, c, and d is p. If the average of a and c is q, what is the average of b and d in terms of p and q?

P and Q are points on sides A B and A C respectively of A B C . If A P=3c m , P B=6c m , A Q=5c m and Q C=10 c m , show that B C=3\ P Q .

Four concentric conducting spherical shells A, B, C and D of radii a, 2a, 3a and 4a respectively. Shell B and D are given charges q and -q respectively. If shell C is grounded then potential difference (VA — VC) is

Figure shows three concentric thin spherical shells A, B and C of radii a, b, and c. The shells A and C are given charge q and -q, respectively, and shell B is earthed. Then,