Physics Questions

If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

Which of the following instrument is used to measure Soil Water Tension?

Weight (W) of a body can be given by the formula

A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is

An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed?

Who first determined the value of G (gravitational constant)?

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.