Which of the following results in the centripetal acceleration is produced in a body:
a)Change in mass
b)Change in direction of velocity
c)Change in magnitude of force
d)Change in magnitude of velocity
Radiations are dangerous to living organism because they damage the cell by:
a)By producing ions in the cells
b)By destroying the cells
c)By increasing the temperature of cells
d)By decreasing the number of cells
What is the time rate of change of linear momentum:
a)Force
b)Work
c)Acceleration
d)Velocity
What will be the value of acceleration, if a body of mass 0.5 kg is acted upon by force of 10 N:
a)20 m/s^2
b)10 m/s^2
c)5 m/s^2
d)40 m/s^2
1 N/C equals to:
a)1 J/C
b)1 1/sec
c)1 C/m^2
d)1 V/m
What does the electric field around a charge represent:
a)Speed of the charge
b)Effective area for electrostatic force
c)Path followed by the charge
d)Size of the charge
Which law explains the relation between amount of charges and force between them:
a)Ohm’s law
b)Lenz’s law
c)Coulomb’s law
d)Ampere’s law
The amount of energy required in moving an electron of charge (e) by the application of 2 volt potential difference equal to:
a)1 Me V
b)1 Ge V
c)1 eV
d)1 Ke V
The change in electric potential with respect to distance equals to:
a)Surface charge density
b)Potential difference
c)Potential gradient
d)Amount of the charge
What does the magnetic flux measure:
a)Strength of the magnetic field
b)Rate of change of magnetic force
c)Area surrounded by a magnet
d)The number of magnetic lines of force
