Optics Answers

Determine the harmonic oscillator frequencies w(omega) appropriate to the nuclei and O-17 and Ni-60.

The Fraunhofer diffraction pattern of a circular aperture (of radius 0.5 mm) is observed on
the local plane of a convex lens of focal length 20cm.calculate the radii of the first and the
second dark rings. Assume λ = 5.5x105 cm.

Why is there right-left inversion when we look into a mirror

why our image appear thin or bulged out in some mirrors

Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual telescope has diameter 100 cm. Is
a . 500 b. 0.002 c. 0.02 d 100

Light is a form of energy that -------


is transported from place to place due to the temperature gradient
requires material media for its propagation
stimulates the sensation of sight
cannot be difrracted

Which of the following is NOT correct?

light is a longitudinal wave
light is a tranverse wave
light is an electromagnetic wave
light can exhibit the phenomenon of polarisation

The speed of light in glass is approximately ---------- that in air


100 times faster than
100 times slower than
50 per cent faster than
33 percent slower than

The property of light waves that detrmines its brightness is its -----------

wavelength
velocity
frequency
amplitude

Telescopes that use mirrors as the objectives are known as -----------

refractors
reflectors
Galilean telescopes
terrestial telescopes