А. R1 = 2.5cm
16+
A diverging meniscus lens of refractive
Index 1.48 has concave spherical surface
whose radil are 2.5cm and 4cm as
shown in figure.
a) calculate the focal length of thellens
b) Calculate the image distance and diss
cuss the nature of image

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?