Question
Assertion  : The surface wave propagation is used for medium wave band and for television broadcasting.
Reason     :  The surface waves travel directly from transmitting antenna to receiver antenna through atmosphere.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 

Answer

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion   :   Anode of Coolidge tube gets heated up at time of emission of X-rays.
Reason      : The anode of Coolidge tube is made of a material of high melting point.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 
When the object has no electric charge then the object is said to be:
The mean age of neutron is :
A person sitting in a chair in a satellite feels weightless because:
  1. The earth does not attract the objects in a satellite.
  2. The normal force by the chair on the person balances the earth's attraction.
  3. The normal force is zero.
  4. The person in satellite is not accelerated.
The magnetic field energy in an inductor changes from maximum value to minimum value in 5.0ms when connected to an AC source. The frequency of the source:
  1. 20Hz.
  2. 50Hz.
  3. 200Hz.
  4. 500Hz.
Atomic weight of boron is $10.81$ and it has two isotopeses $5^{8^{10}}$ and $5^{8^{11}}$. Then ratio of $5^{8^{10}}: 5^{8^{11}}$ in nature would be
For nuclei with A > 100:
An a particle is accelerated through a $p.d$ of $10^6$ volt then $K.E.$ of particle will be
Kirchoff’s first law, i.e., S i = 0 at a junction, deals with the conservation of:
The materials suitable for making electromagnets should have(a) High retentivity and high coercivity(b) Low retentivity and low coercivity(c) High retentivity and low coercivity(d) Low retentivity and high coercivity