Load distance of 15cm and the effort at the distance of 30 cm from the fulcrum, calculate its efficiency. calculate i. work done by load
ii. work done by effort
iii. M. A
iv. V. R 15 cm
v. efficiency [Friction is neglected]
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In what direction does the medium move relative to the direction of the wave? explain.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.