Optics Answers

What is the min distance between a real object and a real image formed by a convex lens of focal length f?

A 1200 kg Toyota Echo is accelerating down a hill. The hill is 150 m long and the total distance in elevation of the hill is 15 m. The car accelerates from a speed of 2.0 m/s at the top to an unknown velocity at the bottom in 11 s. The power of the car is 9.6 kW, while the average retarding force of friction is 600 N. Find the speed of the car at the bottom of the hill.

A light ray was incident perpendicular to the boundary that separates water from glass. What is the angle of refraction that the light will make? Explain your answer.

The wavelenth of the electromagnetic wave used for AM broadcasting is 110 m.
calculate the frequency of the wave

An object is placed 60 cm from a screen. Where should you place a convex lens of focal length 15 cm to get the image of the object on the screen?

An object of size 2 cm is placed 54 cm from a screen. A convex lens of focal length 12 cm is placed between the two such that the image of the object forms on the screen. Find the two possible positions of the lens.

A concave lens of focal length 20 cm is placed at a distance of 20 cm from a 2 cm object which is placed perpendicularly to the principal axis. Find the size of the image formed.

Sodium light is incident normally on a grating of width 4×10−3m. The total number
of lines on the grating is 2000. Determine the angular separation between the sodium
D-lines in the first order spectrum.

The diffraction pattern due to a single slit of width 0.4 cm is obtained with the help
of a lens of focal length 30 cm. If wavelength of the light used is 589 nm, calculate
the distance of the first dark fringe and the consecutive bright fringe from the axis.

Discuss the opponent-process theory of colour vision