EMOT PHYSICS MOCK 1.0

Which of the following is not an application of expansion of solids
Rivets
Bimetal strips
Fitting of wheels on rims in railway Coaches
Regelation
A cell of emf 40v is connected in series to two resistors 2ohm and 4 ohm, which are connected in parallel. Calculate the current flow through the 4 ohm resistor
1.0A
2.0A
3.0A
4.0A
Which of the following is not a property of sound wave
Reflection
Diffraction
Polarization
Refraction
Which of the following consists entirely of vector quantities
Velocity, magnetic flux, reaction
Tension, magnetic flux, mass
Displacement, impulse , power
Work , pressure, moment
Two particle X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. The ratio of the time taken by X to that taken by Y is
½
2
1/√2
√2
4
The tendency of a body to remain at rest when a force is applied to it is called
Impulse
Momentum
Inertia
Friction
A simple pendulum has a period of 17.0s . when the length is shortened by 1.5m,it's period is 8.5s, calculate the original length of the pendulum
1.5m
2.0m
3.0m
4.0m
If the force and the velocity on a system are each reduced simultaneously by half, the power of the system is
Doubled
Constant
Reduced by half
Reduced to a quarter
A cube of side 10cm and mass 0.5kg floats in a liquid with only ⅕ of it's height above the liquid surface . What is the relative density of the liquid.
0.125
0.250
0.625
2.500
The pressure at any point in a liquid at rest depends only on the
Depth and the density
Mass and the volume
Quantity and the surface area
Surface area and the viscosity
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