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Physics

Physics
The distance between node and adjacent antinode is 30 cm. The wavelength is

60 cm.
30 cm.
90 cm.
120 cm.

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Physics
Brightness of bulb depends on voltage or current?

Both A & B
Current
None
Voltage

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Physics
A NOT gate can be implemented by:

A single resistor
A single diode
Two diodes
A single transistor

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Physics
Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is

Made up of slabs of different refractive indices
Homogeneous and transparent
Of variable refractive index
Inhomogeneous and transparent

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Physics
Anemometer is an instrument meant for measuring ________

Velocity
Air masses
Wind speed
Temperature

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Physics
The device which converts sound energy into electrical energy is called

Transmitter
Microphone
Amplifier
Speaker

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