Write an expression for the electrical energy spent in flow of current through an electrical appliance in terms of current, resistance and time.

Electrical energy, W=1^2 R t joule

Write an expression for the electrical energy spent in flow of cu…

Name the material used for making fuse wire.

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Name the forms of energy which a wound-up watch spring possesses.

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When 1 g of ice at 0 °C melts to form 1 g of water at 0 °C then, is the latent heat absorbed by the ice or given out by it?

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How does the angle of minimum deviation produces by a prism change with increase in :
the wavelength of incident light

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What kind of thermometer is commonly used?

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A canon ball of mass 500 g is fired with a speed of $15 m / s ^{-1}$. Find: its momentum.

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Does reflection also take place with the refraction?

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A uniform metre rule of mass 100g is balanced on a fulcrum at mark 40cm by suspending an unknown mass m at the mark 20cm.

To which side the rule will tilt if the mass m is moved to the mark 10cm ?

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The photographic darkrooms are provided with infrared lamps.

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Name the physical quantity which equals the product of voltage and current.

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