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Replace ‘ precedes before’ with ‘precedes.’
The phenomenon of splitting white light into its component colours is called:
A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -
The absolute zero is a temperature at which -
Speed of light will be maximum in which of the following mediums?
With the increase of pressure, the boiling point of any substance –
The phenomenon due to which the sky appears blue is
Which of the following transitions in hydrogen atom will result in emission of radiation of longest wavelength?
A current-carrying conductor placed in a magnetic field experiences a force because:
Which of the following is the ratio of Oxygen to Nitrogen in the air?
A cylindrical metal wire is reformed so that its length decreases by 20% with no change of volume. Its
resistance decreases by: