MHT-CET

Thermal Properties of Mat question bank (Physics)

Practice 233 free MHT-CET Physics - Thermal Properties of Mat questions with answers and step-by-step solutions.

Start free Book a demo

All Easy Hard Medium

Q1.

Coefficient of linear expansion of brass and steel rods are $\alpha_1$ and $\alpha_2$. Lengths of brass and steel rod are $l_1$ and $l_2$ respectively. Though the temperature of brass and steel is increased, $(l_2 - l_1)$ is maintained same at all temperatures, which of the following relations holds good?

(A)

$\alpha_1^2 l_2 = \alpha_2^2 l_1$

(B)

$\alpha_1 l_1 = \alpha_2 l_2$

(C)

$\alpha_1 l_2 = \alpha_2 l_1$

(D)

$\alpha_1^2 l_1^2 = \alpha_2^2 l_2^2$

Show answer & solution

Verified Answer & Solution Locked

Q2.

Two spherical stars, A and B emit black body radiation. The radius of star A is $400$ times that of star B and star A emits power $10^4$ times emitted from star B. $\lambda_A$ and $\lambda_B$ are the wavelengths at which the peak occurs in their respective radiation curves such that $\lambda_A = x\,\lambda_B$. The value of $x$ is

(A)

$\dfrac{1}{4}$

(B)

$4$

(C)

$2$

(D)

$\dfrac{1}{2}$

Show answer & solution

Verified Answer & Solution Locked

Protected Questions

Unlock All 233 Questions in Thermal Properties of Mat

Log in or sign up free to access every question with complete solutions, create chapter practice tests, and track your performance.

Sign up free to access all 233 questions

Unlock every Thermal Properties of Mat question, generate papers, and practice at your own pace.

Start free