A
B
C
D
Text Solution
Verified by Experts
The correct Answer is:
Topper's Solved these Questions
AAKASH SERIES-ELECTROMAGNETIC WAVES-EXERCISE -IB
- (A) : In an electromagnetic wave, the electric and magnetic fields osc...
Text Solution
|
- (A) : Electromagnetic waves are tranverse in nature. (R) : The Poyntin...
Text Solution
|
- (A) : We do not feel the pressure when sun shines on our hand even the...
Text Solution
|
- (A) : In micro wave oven the energy is not wasted in heating up the ve...
Text Solution
|
- A : infrared waves are often called heat waves. R : Infrared waves v...
Text Solution
|
- A : The centre of sensitivity of our eyes coincides with the centre of...
Text Solution
|
- A current I is flowing in a straight conductor of length L. The magnet...
Text Solution
|
- (A) : In Ampere Maxwell law, displacement current has same physical ef...
Text Solution
|
- (A ): Speed of EM wave in a medium depends on electrical permittivity ...
Text Solution
|
- (A ): E.M. waves can show diffraction effect (R) : E.M waves are trans...
Text Solution
|
- (A ): In electromagnetic wave, electric and magnetic fields oscillate ...
Text Solution
|
- (A ): The light can travel in vacuum but sound cannot do so (R) : Ligh...
Text Solution
|
- (A): Gamma rays are more energetic than X-rays (R) : Gamma rays are of...
Text Solution
|
- Assertion : The earth without its atmosphere would be inhospitably col...
Text Solution
|
- A : Environmental damage has depleted the ozone layer in the atmosphe...
Text Solution
|
- (A) : The microwaves are better carriers of signals than radio waves. ...
Text Solution
|
- Assertion (A) : The presence of CO(2) in the air accelerates corrosio...
Text Solution
|
- A satellite orbiting close to the surface of earth does not fall down ...
Text Solution
|
- (A) : The average magnitude of poynting vector vecS is the intensity o...
Text Solution
|
- A : Long distance radio broadcasts use short-wave bands. R : Ionosp...
Text Solution
|