गद्यांश के रिक्त

If input frequency of a full wave rectifier be n, then output frequency would be-

What is the pH of Urine ?

What is the descending order of these radiations based on their frequencies?

Which medium cannot propagate sound waves?

Which of the following statements is incorrect?

Which of the following physical quantities is scalar quantity ?   

A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?

The device used for locating submerged objects under sea is –

According to Maxwell’s right-hand thumb rule, the direction of magnetic field lines around a current-carrying wire is indicated by the:

The amplitude of the sound wave depends on the