decrease the length of the wire
increasing the length of the wire
increasing the mass per unit length of the wire
changing the temperature of the wire
Correct answer is B
No explanation has been provided for this answer.
The colours seen in the thin films of oil on the road and in soap bubbles are due to
reflection
interference
diffraction
polarization
Correct answer is B
A simple form of interference pattern is obtained if two plane waves of the same frequency intersect at an angle. Interference is essentially an energy redistribution process.
3m
4m
5m
6m
Correct answer is A
F = \(\frac{1}{2L}\)\(\sqrt\frac{T}{m}\)
F1L1 = F2L2
500 x 0.9 = 150 x L2
therefore, L2 = 3m
Ripples on water and light waves are similar because both?
have the same frequency
can be refracted and diffracted
are longitudinal waves
have the same velocity
Correct answer is B
Examples of transverse waves include:
Some basic properties of light :
All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference,
and all waves have a wavelength, frequency, speed and amplitude.
What happens when a gas expands at constant temperature?
its pressure decreases
the total momentum of its molecules remains constant
its pressure decreases and the total momentum of its moleculees remains constant
its pressure decreses and the total kinetic energy of its molecule decreases
Correct answer is A
No explanation has been provided for this answer.