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The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
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Explain how the formation of a rainbow occurs.
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Elements belonging to the same group have the same valency.
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The unit of electrical power is _______.
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Due to _______ pencil looks bent in water, in the given experiment.

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Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
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Light changes its direction when going from one transparent medium to another transparent medium. This is called _______.
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Due to _______, we can gather information about worldwide events sitting at home.
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Find the odd one out and give its explanation.
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Find the odd one out and give its explanation.
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What is the potential difference?
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How much is the potential difference between live and neutral wires?
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Identify the wrong figure from the following.
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Write the name.
The atom having smallest atomic radius from group 1.
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Increasing the current passing through the wire decreases the magnetic field intensity.
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The incident rays and refracting rays are on opposite sides of the normal.
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The speed of light varies in different media.
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Nowadays MCBs are used in homes, for stop the current in the circuit which suddenly increases.
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Write scientific reason.
It is beneficial to carry electrical energy in AC form as it is carried over long distances.
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Write scientific reason.
The sun appears on the western horizon for some time after sunset.
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