I.ChemicalII.SoundIII.ElectricityWhich of the above forms of energy can directly be converted to light energy?
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2016
A satellite moves in a circular orbit of radius 4R round the earth. The acceleration of the satellite in terms of g is
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2016
What happens to a water pool on a day when the humidity of the air is very low?
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2016
A charged particle is moving in a uniform magnetic field. if the direction of motion of the charged particle is parallel to the magnetic field, the path of the charge will
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2016
Myopic defects in the human eye can be corrected through the use of a
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2016
What is the angular magnification of a telescope having objective and eyepiece lenses of a focal lengths 30cm and 3cm respectively?
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2016
The instrument used to view stars is the
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2016
Which of the following statements is correct about a machine?
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2016
An object is placed 15cm in front of a plane mirror. If the mirror is moved further 5cm away from the object and the image is
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2016
If the distance between the object and the pinhole of a pinhole camera is reduced by half the size of the image of the object
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2016
A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him will be
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2016
The heat required to raise a mass of a substance through 1K is known as
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2016
The rate of cooling of a heated quantity of liquid in an enclosure depends on the
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2016
When an athlete perspires after running, he loses heat through
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2016
A wire of length 10m is cooled from 50oC to 10oC. Calculate the decrease in the length of the wire. [c = 3 x 10-5K-1]
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2016
What force has to be exerted on a mass 60kg to give it an acceleration of 10ms-2 vertically upwards?[g = 10ms-2
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2016
A saturated vapour pressure of a liquid increases when the
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2016
A dynamo primarily converts
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2016
Which of the following statements is NOT correct?
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2016
Semiconductor is a class of solid whose conductivity increases with an increase in