1000+ Physics MCQ Questions and Answers Pdf - 1

Question: 1

A diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light?

(A) diffraction pattern becomes broader and farther apart

(B) no change

(C) bands disappear

(D) diffraction pattern becomes narrower and crowded together

Question: 2

When light from sodium vapour lamp illuminates the slit of spectrometer, the images of the slit obtained in the yellow region of the spectrum is called

(A) continuous spectrum

(B) spectrum of sodium

(C) characteristic spectrum

(D) absorption spectrum

Question: 3

In how many ways, radiowave is propagated from the transmitting to the receiving antenna?

(A) 1

(B) 2

(C) 3

(D) 4

Question: 4

Electromagnetic disturbances can be propagated through space

(A) with the help of gravitational force only

(B) with the help of ether medium only

(C) without the help of material medium

(D) with the help of air medium only

Question: 5

When ultraviolet light is incident on certain substances they emit visible light. This phenomenon is called

(A) raman effect

(B) photoelectric effect

(C) phosphorescence

(D) fluorescence