IIT JEE Main 2016 Physics Question No 6

IIT JEE Main 2016 Physics Question No 6

Choose the correct statement:
(1) In frequency modulation the amplitude of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio single.
(2) In frequency modulation the amplitude of the high frequency carrier wave is made to vary in proportion to the frequency of the audio signal.
(3) In amplitude modulation the amplitude of the high ‘frequency carrier wave is made to very in proportion to the amplitude of the audio signal.
(4) In amplitude modulation the frequency of the high frequency carrier wave is made to vary in proportion to the amplitude of the audio signal.

Solution

By definition of Amplitude Modulation we know that statement number 3 is correct.

Answer

Correct answer to given problem No 6 of IIT JEE Main Physics paper of 2016 is option number 3 which is true.

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IIT JEE Main 2016 Physics Question No 5

IIT JEE Main 2016 Physics Question No 5

A particle of mass m is moving along the side of a square of side ‘a’, with a uniform speed v in the x-y plane as shown in the figure. Which of the following statements is false for the angular momentum L about the  origin?

IIT JEE Main 2016 Physics Question No 5
(1) L =  mv[(2/√2) + a] kˆ when the particle is moving from B to C
(2) L =  (mv/√2)Rkˆ  when the particle is moving form D to A.
(3) L =  (mv/√2)Rkˆ  when the particle is moving from A to B.
(4) L =  mv[(R/√2) – a] kˆ when the particle is moving from C to D.

Solution

As L = r  X p
Hence option 2&4 are incorrect.

 

Answer

Correct answer to given problem No 5 of IIT JEE Main Physics paper of 2016 are options (2, 4), which are false.

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