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Physics

Physics
Light from the Sun reaches us in nearly

8 minutes
4 minutes
2 minutes
16 minutes

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Physics
Solar energy is converted into chemical energy during

Photosynthesis
Osmosis
Transpiration
Diffusion

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Physics
Quality of a musical note depends on

Harmonics present
Fundamental frequency
Amplitude of the wave
Velocity of sound in the medium

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Physics
What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

24
50
12
36

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Physics
Magnetism in materials is due to

Protons at rest
Circular motion of electrons
All neutrons at rest
Electrons at rest

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Physics
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

LUV < lVIS < lIR
LUV > lIR > lVIS
LUV > lVIS > lIR
LUV < lIR < lVIS

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