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Define Heat engine
Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work.
It is explained as the ratio of useful work done (W) to the heat input.
What are the consequences of dispersion? The main familiar result of dispersion is the splitting up of the composite white light within its constituent colours as into a rainbo
Where do you find the null points in the combined field due to the earth and a bar magnet, when i) the N-pole of the magnet is taken towards the north of the earth, ii) the
Define the merits of ultrasonic magnetostriction method. Merits of ultrasonic magnetostriction method: a. Magnetostrictive materials are simply accessible and inexpensiv
Define the term scanning electron microscope. Scanning electron microscope: The scanning electron microscope (SEM) is a form of electron microscope which images the sample s
'Heavy water is often used as a moderator in thermal nuclear reactors.' Give reason.
Which of two, namely potentiometer and voltmeter is preferable to calculate the emf of a batter? Why? When is the series combination of cells advantageous and why?
Proton was discovered by: (1)Chadwick (2)Thomson (3)Goldstein (4)Bohr Ans: (3)Goldstein
A pulley in the form of a uniform disk with a heavy rope hanging over it. The circumference of the pulley is 1.2m and its mass is2.2kg.The rope is 8.0m long and its mass is 4.8kg.A
A circuit having of a 10μF capacitor connected in series with a 25 k resistor with a switchable 100V d.c. supply. When the supply is connected, calculate (a) The time constant,
Suppose a fluid (say, water) occupies a domain D ⊂ R 3 and has velocity field V=V(x, t). A substance (say, a day) is suspended into the fluid and will be transported by the fluid
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