Tell me how we are getting light from electrical bulb?

349

How many femtometers are in a nanometer?

440

Explain virtual image?

418

What is the effeciency of solar cell (Current year)

1858

What is radium used for?

410

-100 mmWC means how much kg/cm2

1027

Does gas have density?

391

What is centrifugal force?

423

What are the applications of schrödinger wave equations? : quantum physics

388

What is fluorescence?

435

Explain the different parts of the x-ray radiation intensity graph? : quantum physics

426

State 'law of machines'?

419

assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?

391

What cycle most directly describes the working cycle of a heat engine operating as an ideal engine of maximum thermal efficiency?

380

What is the advantage of fixed pulley?

382