In the following equation, which of the two signs will be interchanged to get the correct equation?
119 - 21 ÷ 7 + 117 × 3 = 11
The correct answer is C
In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
The experimental evidence that the electron exhibits wave-like characteristics was first provided by:
What is the momentum of an object of mass 1/2 m, moving with a velocity of 2V?
The wavelength produced by a He-Ne laser corresponds to the transition in:
Two cars A and B are running at velocities of 60km per hour and 45 km per hour. What is the relative velocity of car A with respect to car B, if both ar...
A soap bubble shows colours when illuminated with white light. This is due to –
Newton's rings can be obtained in:
The speed of a fast moving electron, having total energy of 2 MeV, is nearly:
Which of the following is NOT a non-contact force?
The oldest type of energy known to man is –