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In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
‘Lubb-dupp’ sound is produced due to the action of
Which of the following is a reason for excessive current in electrical circuits?
I. Direct touching of wires
II. Connection of many d...
Which type of mirror is used in car headlights?
The wavelength produced by a He-Ne laser corresponds to the transition in:
Which physical quantity remains constant during uniform circular motion?
The functioning of a quartz crystal in a watch is based on which principle?
Which of the following is not a recognized type of inertia?
A coil with N turns and area A is placed in a magnetic field varying as B = B₀·e–αt. What is the induced EMF at time t = 0?
An electron and a proton are accelerated by the same potential difference. Which one has a longer de Broglie wavelength?
