Science & Technology

Light travels fastest through?

The speed of light in vacuum is approximately?

The bending of light as it passes from one medium to another is called?

The splitting of white light into its constituent colors is called?

A rainbow is formed due to which combination of optical phenomena?

Which type of mirror is used in vehicle headlights to produce a parallel beam of light?

Which type of mirror is commonly used as a vehicle's rear-view/side mirror for a wider field of view?

A convex lens is also known as a?

A concave lens is also known as a?

Myopia (short-sightedness) is corrected using a?

Hypermetropia (long-sightedness/far-sightedness) is corrected using a?

Total internal reflection is the working principle behind?

The unit used to measure the power of a lens is the?

The SI unit of frequency is the?

The audible range of sound frequencies for the average human ear is approximately?

Sound waves with frequencies above the audible range (>20,000 Hz) are called?

Sound waves with frequencies below the audible range (<20 Hz) are called?

Sound cannot travel through?

Sound travels fastest through?

The loudness of sound is measured using which unit?

Ultrasonic waves are commonly used in medicine for?

The phenomenon of an echo is caused by the?

Which type of electromagnetic wave has the shortest wavelength?

Which type of electromagnetic wave has the longest wavelength?

Arranged from longest to shortest wavelength, the electromagnetic spectrum reads?