lce formed over lakes has - Vidyadip

MCQ

lce formed over lakes has

A
Very high thermal conductivity and helps in further ice formation
✓
Very low conductivity and retards further formation of ice
C
lt permits quick convection and retards further formation of ice
D
It is very good radiator

✓

Answer

Correct option: B.

Very low conductivity and retards further formation of ice

(b)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Transmission of Heat→Transmission of Heat — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

$\sigma_1$ and $\sigma_2$ are the electrical conductivities of $\mathrm{Ge}$ and $\mathrm{Na}$ respectively. If these substances are heated, then

The temperature of reservoir of Carnot's engine operating with an efficiency of $70 \%$ is $1000 K$. The temperature of its sink is

If an ammeter is connected in parallel to a circuit, it is likely to be damaged due to excess

A body of mass $5 \mathrm{~kg}$ is moving with a momentum of $10 \mathrm{~kg}-\mathrm{m} / \mathrm{s}$. A force of $0.2 \mathrm{~N}$ acts on it in the direction of motion of the body for 10 seconds. The increase in its kinetic energy is

If the critical angle for total internal reflection from a medium to vacuum is $30^{\circ}$, the velocity of light in the medium is

A force $\vec{F}(5 \hat{i} 3 \hat{j})$ Newton is applied over a particle which displaces it from its origin to the point $\vec{r}(2 \hat{i} 1 \hat{j})$ metres. The work done on the particle is

If $\gamma$ denotes the ratio of two specific heats of a gas, the ratio of slopes of adiabatic and isothermal $P V$ curves at their point of intersection is

A cell of internal resistance $3\ \mathrm{ohm}$ and $\mathrm{emf}\ 10\ \mathrm{volt}$ is connected to a uniform wire of length $500 \mathrm{~cm}$ and resistance $3 \ \mathrm{ohm}$. The potential gradient in the wire is

In order to obtain a real image of magnification $2$ using a converging lens of focal length $20 \mathrm{~cm}$, where should an object be placed

To convert galvanometer into ammeter, shunt of $0.01\,\Omega $ is used. Resistance of galvanometer coil is $50\,\Omega $ and its maximum deflection current is $20\ mA$ . Range of ammeter is