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If B = centre of buoyancy, G = centre of gravity, B1 = new centre of buoyancy when the floating body rotates by an angle θ, then the location of metacentre will be:
All objects experience a buoyancy when they are immersed in a fluid. Buoyancy is
If the amplitude or oscillation of a simple pendulum is very small, then its time period of oscillation
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:
The happiness(H) of a person depends upon the money he earned(m) and the time spend by him with his family(h) and is given by equation H=f(m,h)=400mh2 whereas the money earned by him is also depends upon the time spend by him with his family and is given by m(h)=√(1-h2). Find the time spend by him with his family so that the happiness of a person is maximum.
The energy of the emitted X-rays depends upon the _________ of the atom and their intensity depends upon the __________
Which of the following statement(s) about specific heat of a body is/are correct?
1. It depends upon mass and shape of the body.
2. It is independent of mass and shape of the body.
3. It depends only upon the temperature of the body.
Statement I The pitch of sound wave depends upon its frequency.
Statement II The loudness of the sound wave depends upon its amplitude.
The buoyancy depends on
Buoyancy force depends on the __________ the liquid.
Assertion: A needle placed carefully on the surface of the water may float, whereas a ball of the same material will always sink. Reason: The buoyancy of an object depends both on the material and shape of the object