The echo of a sounder from the bottom of an ocean is heard 2.5 seconds…
The echo of a sounder from the bottom of an ocean is heard 2.5 seconds later. If the…
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The tyre pressure of a car was found to be 150cmHg in the morning at…
The tyre pressure of a car was found to be 150cmHg in the morning at a temperature of…
A man stands on a spring scale placed in a lift. The lift descends at…
A man stands on a spring scale placed in a lift. The lift descends at constant velocity. As…
One of the following readings represents the measurement of the length of a metal rod…
One of the following readings represents the measurement of the length of a metal rod using vernier callipers,…
The hatch door of a submarine has an area of 0.5m2. The specific gravity of…
The hatch door of a submarine has an area of 0.5m2. The specific gravity of sea water is…
Longitudinal waves do not exhibit
Longitudinal waves do not exhibit A. Refraction B. Reflection C. Diffraction D. Polarization E. Rarefaction Correct Answer: Option…
The specific latent heat of vaporization of a substance is always
The specific latent heat of vaporization of a substance is always A. less than its specific latent heat…
If the force of a charge of 0.2 coulomb in an electric field is 4N,…
If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric…
Which of the following best describes the energy changes which take place when a steam…
Which of the following best describes the energy changes which take place when a steam engine drives a…
the speed of light in vacuum is 3.0 x 108ms-1. If the refractive index of…
the speed of light in vacuum is 3.0 x 108ms-1. If the refractive index of a transparent liquid…