A light bulb is placed between two plane mirrors inclined at an angle of The number of images formed are
SCRA 1994; AIIMS 1997; RPMT 1999; AIEEE 2002;
Orissa JEE 2003; MP PMT 2004; MP PET 2004]
Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are [IIT-JEE 1988; RPMT 1995; AIIMS 1997; MP PMT 1997;MP PET 1999; BHU 2002; KCET 2000, 05]
By Huygen's wave theory of light, we cannot explain the phenomenon of
[CPMT 1989; AFMC 1993, 99; MP PET 1995, 2003;RPMT 2003; BCECE 2003; Pb PMT 2004]
The bond order is maximum in
[AIIMS 1983, 85; CBSE PMT 1994; MP PET 2002]
Glycerine has [MP PMT/PET 1988; MP PMT 1989, 91; AIIMS 1997]