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.

Q7/10: The shape of the wavefront originating from a point source is:

Q8/10: The condition for obtaining a secondary maximum in the diffraction pattern due to a single slit is (where a is slit width):

Q9/10: If the two slits in Young's experiment are illuminated by two different sodium lamps emitting light of the same wavelength, the interference pattern will:

Q10/10: A beam of ordinary light is incident on a polaroid, and the transmitted light is passed through another polaroid. If the intensity is reduced to 25% of original, the angle between them is:

Q1/10: Who discovered the photoelectric effect?

Q2/10: The minimum energy required by an electron to just escape from the metal surface is called:

Q3/10: In the photoelectric effect, the number of photoelectrons emitted per second is proportional to:

Q4/10: The de Broglie wavelength associated with a particle of momentum 'p' is given by:

Q5/10: According to Einstein's photoelectric equation, the maximum kinetic energy of photoelectrons depends linearly on:

Q6/10: The rest mass of a photon is:

Q7/10: If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor:

Q8/10: Two metals A and B have work functions 2 eV and 4 eV respectively. Which metal has a lower threshold wavelength?

Q9/10: What is the momentum of a photon of frequency nu?

Q10/10: Assertion: The photoelectric effect demonstrates the particle nature of light. Reason: Photoelectric emission is an instantaneous process.

Q1/10: A proton and an alpha particle are accelerated through the same potential difference. The ratio of their de Broglie wavelengths is:

Q2/10: Stopping potential in the photoelectric effect depends on: