Q10/10: Two photons have the same wavelength. They must invariably have the same:

Q1/10: According to Huygens' principle, what does each point on a wavefront act as?

Q2/10: Which phenomenon proves the transverse nature of light?

Q3/10: In Young's double-slit experiment, if the distance between the slits is halved, what happens to the fringe width?

Q4/10: The locus of all particles in a medium vibrating in the same phase is called:

Q5/10: Two coherent sources of light produce constructive interference. The phase difference between them must be an:

Q6/10: Which of the following cannot be polarized?

Q7/10: If Young's double-slit experiment is performed in water instead of air, the fringe width will:

Q8/10: The resolving power of a telescope can be increased by:

Q9/10: A polaroid is placed in the path of unpolarized light of intensity I. The intensity of transmitted light is:

Q10/10: Assertion: Thin films such as soap bubbles or oil on water show beautiful colors. Reason: It happens due to the interference of light reflected from the upper and lower surfaces.

Q1/10: Two coherent sources have intensities in the ratio 25:16. The ratio of maximum to minimum intensity in their interference pattern is:

Q2/10: The phase difference between the incident and the reflected wave when reflection occurs at a denser medium is:

Q3/10: Diffraction effects are more pronounced when the size of the obstacle or aperture is:

Q4/10: In a single-slit diffraction experiment, the first minimum for red light (660 nm) falls at the first maximum of another wavelength X. What is X?

Q5/10: Unpolarized light is incident on a plane glass surface at the Brewster angle. What is the angle between the reflected and refracted rays?

Q6/10: Assertion: In Young's double-slit experiment, the fringe width for dark fringes is different from that for bright fringes. Reason: In YDSE, the fringes are produced by the superposition of two waves.