Assertion: On going away from a point charge or a small electric dipole, electric field decreases at the same rate in both the cases.
Reason: Electric field is inversely proportional to square of distance from the charge or on electric dipole.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
if both assertion and reason are false.
Assertion: If a conductor is given charge then no excess inner charge appears.
Reason: Electric field inside conductor is zero.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Magnetic lines forms closed loops in nature.
Reason: Mono-magnetic pole does not exist in nature.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Gaussian surface is considered carefully.
Reason: The point where electric field to be calculated should be with in the surface
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Electromagnetic radiations exert pressure.
Reason: Electromagnetic-waves carry both momentum and energy.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Total current entering a circuit is equal to leaving the circuit by Kirchhoff's law.
Reason: It is based on conservation of energy.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Magnetic field is useful in producing parallel beam of charged particle.
Reason: Magnetic field inhibits the motion of charged particle moving across it.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
For satellite communication which wave is used
Space wave
Sky wave
Ground wave
Microwave
A.
Space wave
A space wave travels in a straight line from transmitting antenna to the receiving antenna. Space waves are used for line of sight communication as well as satellite communication.
In nuclear fission, which of the following quantity is conserved?
Energy
Mass
Momentum
Both energy and mass
When a slow neutron is captured by a nucleus, a fission energy releasing 200 MeV. If power of nuclear reactor is 100 W then rate of nuclear fission is
3.6 × 106 s-1
3.1 × 1012 s-1
1.8 × 104 s-1
4.1 × 106 s-1