Physics Quiz Questions and Answers for Class 12, 11, 10, 9, 8, 7, 6, 5 - 2

Question: 6

The type of modulation that facilities highest transmission speeds of a given bandwidth is

(A) Amplitude modulation

(B) Phase modulation

(C) Frequency modulation

(D) Both a and b

Question: 7

In a simple radio receiver, the function of PN junction diode in a detector is

(A) To convert electromagnetic energy into sound energy

(B) To extract the audio signal from the radiowave

(C) To amplify the selected radiowave

(D) To receive the audio signal of desired frequency

Question: 8

In Raman effect, the frequency of anti-stokes lines is

(A) Zero

(B) Equal to incident frequency

(C) Lower than incident frequency

(D) Greater than incident frequency

Question: 9

In Raman effect, the frequency of stokes lines is

(A) Zero

(B) Equal to incident frequency

(C) Greater than incident frequency

(D) Lower than incident frequency

Question: 10

The spectrum that contains unbroken luminous bands of all wavelengths containing all colours from violet to red is called ______ sectrum.

(A) Line absorption

(B) Band

(C) Line

(D) Continuous