Science Questions

A current-carrying conductor is placed in a magnetic field. The force is maximum when the angle between them is:

The unit of magnetic flux is:

What is the equivalent resistance of a wire of 12 Ohms bent into a circle, measured across its diameter?

The total resistance of 'n' identical resistors in series is S. When they are connected in parallel, the total resistance is P. The ratio S/P is:

What is the nature of sound waves in air?

Which of the following media allows sound to travel fastest?

What is the audible frequency range for a healthy human ear?

What is the phenomenon of repetition of sound due to reflection from a distant object called?

Which characteristic of sound depends on its frequency?

What is the unit used to measure the intensity level of sound?

Sound waves cannot travel through which of the following?

What is the relationship between the velocity (v), frequency (f), and wavelength (λ) of a sound wave?

What is the SI unit of frequency of sound waves?

Sound waves in air are characterized as which type of waves?

What is the approximate speed of sound in air at 0 degree Celsius?

In which of the following media does sound travel the fastest?

What is the audible frequency range for a healthy human ear?

Which property of sound determines its pitch?

The loudness of sound is directly proportional to the square of its what?

What is the minimum distance required between a source and a reflector to hear a distinct echo in air at 20 degrees Celsius?