A galvanometer of resistance 50Ω is connected to a battery of 3 V along with a resistance of 2950 Ω in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In […]
Which two of the following five physical parameters have the same dimensions? 1. energy density 2. refractive index 3. dielectric constant 4. Young’s modulus 5. magnetic field
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(a) 1 and 4 (b) […]
A cell can be balanced against 110 cm and 100 cm of potentiometer wire, respectively with and being short circuited through a resistance of 10Ω. Its internal resistance is
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(a) 2.0 ohm […]
A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ if energy. This initial velocity of the shell is:
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(a) […]
Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of energy. How much power is generated by the turbine? […]
Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be:
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(a) […]
A particle moves in a straight line with a constant acceleration. It changes its velocity from 10 ms⁻¹ to 20 ms⁻¹ while passing through a distance 135m in t second. The value of t is: […]
A particle of mass m is projected with velocity v making an angle of 45° with the horizontal. When the particle lands on the level ground the magnitude of the change in its momentum will […]
Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms
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(a) absence of resin duct and leaf venation (b) presence of vessel elements […]
Ascaris is characterized by
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(a) absence of true coelom but presence of metamerism (b) presence of neither true coelom nor metamerism (c) presence of true coelom but absence of metamerism (d) presence […]
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