Physics
The difference between the temperature of water at the bottom and the top of a waterfall is 0.2 °C. Calculate the height of the waterfall. [g = 10 N kg-1, Specific heat capacity of water = 4200 J kg-1 °C-1]
Related Questions
A metre rod is half made of copper and half made of iron. If the mass of the copper part is 900 g and the mass of iron is 800 g, then calculate the position at which the rod can remain in equilibrium.
The diagram below shows a copper conductor placed along the east-west direction. Magnetic compass P is present above the conductor, and Q is below the conductor. If current is passed through the wire from A to B, then which of the two compasses will show prominent deflection and why?
The diagram shows straw partially immersed in water in the glasses.
(a) Why does the straw in water appear thicker as compared to the straw outside water?
(b) Why does the straw appear discontinuous in water?
The below diagram shows a triangular prism used for tracing the path of ray AB due to the refraction through the prism. Observe the diagram and answer the following:
(a) State the correct eye position from the points P, Q, R and S to see the images of the points A and B in the same line through the prism.
(b) If the ray, after entering the prism, suffers total internal reflection, then which would be the appropriate position out of P, Q, R, and S to see the image due to TIR?