Optics Answers

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?

The two mirrors meet at a right angle. The beam of light strikes mirror 40o with the normal at 1.25 m from the intersection. What is the angle of reflection in mirror 2?

Consider a con\"1ging lens of focal length /. When an object is placed 60 cm away from the !en.., a real image is produced. \\'hen the object is mm'lld to 40 cm away from the lens, the image III0\"'5 10 cm further nway from the lens tb!la it wns wbea the object was at 60 cm. \Vhnt is /

An incident wave travelling along a string meets the discontinuity with infinite impedance. Incident wave will be totally reflected back with a change of phase π. True or false

A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.95 cm in front of the lens, and the image is formed 25.0 cm from the eye. (a) What is the focal length of the lens?