Search & Filtering
An orange and a red ray of light travels through vacuum before hitting a plane mirror also residing in the vacuum. Which of the following statements is/are true?
An object is placed 20cm from a converging lens. If the real image formed is 80.0cm from the object, the focal length of the lens is
An object is placed 20cm from a converging lens if the real image formed is 80.0cm from the object, the focal length of the lens is ?
Blue light leaves a Vacuum (the first medium) and enters a second medium. Which of the following second medium will result in the 2nd greatest amount of bending from the original light path?
a. Vacuum
b. Glass
c. Empty space
d. Diamond
e. Air
f. Water
Which of the fulling results when a wave moves from a medium of a low refractive index to a medium of higher refractive index
a. The wavelength increases
b. The wavelength decreases
c. The wave speed increases
d. Its rays bend away from the normal
e. Its rays bend towards the normal
f. Its rays experience are refracted by exactly 90 es
g. Its rays experience Total Internal Reflection
An object of height 19.7 cm is placed 23.6 cm from a convex lens. What is the angular size of this object?
A violet ray of light leaves a first medium at an angle of 0.79 radians to the normal and enters a second medium at 0 56 radians to the normal. Given that the refractive index of the second medium is 1.33. What is the refractive index of the first medium?
a student is only able to read the lecture notebook when it is held at 65.00cm from his eyes. what focal length and power must the lenses of his reading glasses have to bring his near point to the normal value
the critical angle at an air liquid interface is 50°. calculate the refractive index of the liquid
- An object with a mass of 3.50 kg moves in a straight line on a frictionless horizontal surface with a speed of 2.0 m/s. Find the kinetic energy and the net work done on the object to make it reach this speed if it started from rest.
