Optics Answers

Calculate the optical invariant for a photographic objective with F = 50 mm. N = 2, field of view +26.6°.

Calculate the optical invariant for a photographic objective with F = 50 mm. N = 2, field of view +26.6°.

A parallel beam of light falls normally on one phase of a small angled glass prism. Part of the beam

is refracted at the second phase and is deviated through an angle of 1.8o

. Another part is reflected

at the second phase and emerges at the first making an angle of 9.2o

with the normal. Calculate:

(i) The refractive index of the glass.

(ii) The angle of the prism.

State and explain fermat's principle. Using this principle derive shell's law of refraction .

differentiate between converging and diverging lens.

A electric beam is incident on a potential barrier at height 0.03ev and of infinite with find the reflection coefficient of the barrier if the energy of the incident electric beam be (a)0.04ev(b)0.025ev(c)0.03ev.

Susie Small finds she weighs -280 N. Calculate her mass. Express your answer to the nearest tenth of a kilogram Remeber gravity is negative .

What is the effect of temperature on mean free path in ideal gas?

A electric beam is incident on a potential barrier at height 0.03ev and of infinite with find the reflection coefficient of the barrier if the energy of the incident electric beam be (a)0.04ev(b)0.025ev(c)0.03ev.

A student uses a converging lens to produce an enlarged, virtual image of a scale she wishes to read

accurately. The focal length of the lens is 10 cm . What is the suitable distance between the scale and

the lens, whether it will be more or less than 10cm?