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What is the wavelength of visible spectrum?

Find the equivalent resistance when three resistors of 4 Ω, 6 Ω, and 12 Ω are connected in parallel.

Which of the following does not affect the value of acceleration due to gravity?

In which type of motion does the velocity of a body vary with time?

Half-life of a radioactive substance is 10 days. The time after which only 1/16th of it remains is:

Which law states that “an object remains at rest or in uniform motion unless acted upon by an external force”?  

Which of the following is not a nuclear reaction?

Which law explains the relation between pressure and volume of a gas at constant temperature?  

What is the minimum escape velocity of rocket to be launched into space?

Which of the following statement is correct?

I. Magnetite is a natural magnet

II. A freely suspended magnet always aligns in N-S direction