What is the effeciency of solar cell (Current year)

2366

What is the name for the physical constant with a value of 6.62 x 10-27 erg seconds?

891

-100 mmWC means how much kg/cm2

1655

What is the rectilinear propagation of light?

1004

What is geo-synchronous point, and its specialty?

909

What are wave fronts?

1061

When is fluorescence strong?

864

Why it becomes bitterly cold as soon as the snow starts melting?

2358

Explain the difference between collector & emitter of transistor, even though material used for both same?

942

How do you find the refractive index of a liquid by using total internal reflection?

856

Consider earth's equator is covered with a measuring tape touching the ground such both the ends touch each other. if the tape is lifted 1 meter from the ground, what would be the distance between two ends of tape?

1958

Explain why does a tea kettle sing?

895

what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?

2096

Can a solid and liquid together be possible?

923

How do you calculate the age of earth?

810