Calculate the upthrust on an object of volume 50cm3 which is immersed in liquid of density 103kgm-3 [g = 10ms-2]
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2017
Why do soldiers march disorderly while crossing a bridge?
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2017
Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm.
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2017
Which of the following is not an electromagnetic radiation?
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2017
Which is the incorrect formula for a body accelerating uniformly?
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2017
Which of the following statements is NOT correct?
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2017
A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is
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2017
Calculate the specific latent heat of vaporization of steam of 1.13 x 106J pf heat energy is required to convert 15kg of it to water.
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2017
Under which of the following conditions is work done?
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2017
Under what conditions are cathode rays produced in a discharge tube?
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2017
The thermal expansion of a solid is an advantage in
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2017
An element and its isotope only differ in the number of
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2017
Which of the following instruments helps to maintain the correct humidity and temperature of a building?
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2017
Three 3ω resistance are connected in parallel what is the equivalent resistance?
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2017
A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine
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2017
When the r.m.s value of a source of electricity supply is given as 240v, it means that the peak value of the supply is
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2017
When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is
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2017
Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high
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2017
A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine