Find the number of triangles in the given figure:

Compared to fresh Water, the freezing point of sea water is -

According to Kepler’s third law of planetary motion, the square of the orbital period of a planet is proportional to the __________.

The pitch of a sound is primarily determined by which of the following?

Which of the following statement is/are true?

I. The materials which allow heat to pass through them easily are conductors of heat.

Which mirror always forms virtual, erect, and diminished image?

What term refers to the superposition of two or more coherent waves to produce regions of maxima and minima?

What is the effect of a magnetic field on a current carrying conductor?  

Which law states that the induced electromotive force (e.m.f.) is proportional to the rate of change of magnetic flux linkage?

Angle of friction and angle of repose are