Physics Questions

Why boiling point of water decreases at high altitudes?

Which of the following is a renewable source of energy?

A wooden block of mass m1 kg accelerates at m/s when a force of 5 N acts on it. Another block of mass m2 kg accelerates at 20 m/s when the same force acts on it. If both the blocks are tied together and the same force acts on their combination, the acceleration will be about

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

Which of the following is not a vector quantity?

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

Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?

 During the night, the direction of the wind would be from the __________________.