Question
How many triangles are there in the figure given
below?Solution
Number of triangles is: 'ABE, BFE, BGF, BCG, CDJ, BGN, CHG, CMG, GMN, KLM, GHM, FGN, BMN, CMN and BGE'.
So, there are 15 triangles in the given figure.
A solid non-conducting sphere of radius R carries a uniform volume charge density ρ. What is the ratio of electric field at r = R (surface) to that at ...
Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?
The unit of electric power is —
What is the phenomenon of bending of light around corners called?
The frequency of ultrasonic waves is:
Newton's rings can be obtained in:
Which law states that energy can neither be created nor destroyed?
Which of the following pair regarding sound is correct?
I. Loudness – depends on amplitude
II. Shrillness – depends on frequency
If a body of mass 5 kg is raised to 10 meters height, find its potential energy. (g = 9.8 m/s²)
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