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Earn 100

A carrot looks orange in colour because of the β carotene molecule in it. This means that the β carotene molecule absorbs light of wavelengths,

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Important Questions on Physical World and Measurement

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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 6
The physics behind fusion test reactor is:
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 7
The dimension of light year
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 8
The nearest star to our solar system is 4.3 light years away. The distance of this star in Parsec is (Mean distance between the earth and the sun =1.5×1011 m and one light year =9.46×1015 m
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 9
Which of the following is a possible final step in applying the scientific method?
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 10
Match the columns I and II
  Column I   Column II
A Stoke's law I Pressure and energy
B Turbulence II Hydraulic lift
C Bernoulli's Principle III Viscous drag
D Pascal's law IV Reynold's number

The correct match is

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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 11
Consider a particle moving along the positive direction of X-axis. The velocity of the particle is given by v=αx (α is a positive constant). At time t=0, if the particle is located at x=0, the time dependence of the velocity and the acceleration of the particle are respectively.
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 12
The prefix atto means
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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 1>Q 13

If E and H represents the intensity of electric field and magnetizing field respectively, then the unit of EH will be: