The light intensity at which photosynthesis and

The time period of a second’s pendulum is –

For a wave, wavelength divided by the time period equals ________.

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

Which type of mirror is utilized in solar furnaces to focus sunlight and generate heat?

A simple microscope consists of :

Among the following materials, which is not an insulator?

Which of the following types of waves has the smallest wavelength?

The instrument which uses sound waves to measure the depth of oceans is –

Who defined the law of gravitation? 

Which function is performed by rectifiers?