Which of the following factors does not affect the rate of evaporation of a liquid?
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2021
Formation of hydrogen bubbles at the copper plate of aprimary cell is called?
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2021
The reason for laminating the soft iron core of a transformer is to?
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2021
Which of the following quantities is not an exampleof force?
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2021
Which of the following scientist suggested that moving particles exhibit wave properties?
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2021
Which of the following factors is not among that determines the resistance of a wire?
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If the relative humidity of the atmosphere increases, the rate of evaporation of sweat from the human body?
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2021
Which of the following set of quantities have members which are all vectors?
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2021
According to Pascal's principle, the pressure in a fluid is always?
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2021
A note produced by an instrument is distinguished from a similar note produced by another instrument by the?
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2021
Which of the following statements about distance anddisplacement is not correct?
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The electrons in a cathode-ray tube are produced by?
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2021
Which of the following statements is not a characteristic of a plane progressive wave?
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2021
A stone is thrown horizontally with initial velocity 15m/s from a tower 20 m high. How long does it take to reach the ground? [g= 10m/s\(^2\)
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2021
An ice cube has mass of 20 g at 5°C. Calculate the energy required to raise its temperature to 0°C. [Specific heat capacity of ice = 2.1 J/g°c]
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2021
The following statements about a loudspeaker are correct except?
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2021
A radioactive material has a half-life of 1.0 hour If 200.0 g of it was present at 6 a.m. on a certain day, how many grams will have decayed by 9 a.m. on the same day?
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2021
An electric circuit consists of a resistor. a battery and a key. If the voltage of the battery is increased, there Would be an increasein the?
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2021
A force of 10 N, acting continuously, increases the kinetic energy of an object from 20.J to 60 J. Find the distance moved by the object.
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2021
A rotating disc contains a set of holes in a circle. An air jet is directed onto the holes and a note of frequency 480 Hz is produced. If the number of holes is 20, calculate the speed of rotation of the disc.