During an experiment, a student places a candle beyond twice the focal length of a convex lens and records the image position and nature. Which of the following scenarios could result from this setup?
An inverted, real, and diminished image forms between focus and twice the focal length
For a convex lens, ray tracing shows that when the object sits beyond 2F on one side, the rays converge to form an image on the opposite side.
The image lies between F and 2F, is real because rays actually meet there, is inverted with respect to the object, and is diminished in size.
An image of the same size forms only when the object is placed exactly at 2F, not beyond it.
A virtual erect enlarged image appears only when the object is placed between the lens and F, which is not the case here.
A real image can never be erect for a single convex lens, ruling out that scenario.
Hence, the setup produces an inverted, real, diminished image between focus and twice the focal length.
Which of the following is NOT the correct use of a concave mirror?
The image formed by a concave lens for an object at infinity is:
The magnification of a concave mirror is −1. Which of the following statements is correct about the position of the object?
The power of a lens is given as the reciprocal of its:
A ray of light enters a rectangular glass slab from air at an angle of 40 degrees to the normal. If the refractive index of glass with respect to air is 1.5 and the velocity of light in air is \(3 \times 10^{8}\) m/s, what is the velocity of light inside the glass slab?
What happens when white light passes through a glass prism?
A ray passing through the principal focus of a concave mirror will, after reflection:
A traffic surveillance camera uses a convex mirror with a radius of curvature of 2 m. Where will the image of a car located 3 m from the mirror appear?
A student places an object 15 cm in front of a concave mirror of focal length 10 cm. If the image formed is real, what is the magnification produced by the mirror?
How does the size of atmospheric particles affect the scattering of sunlight?
A convex lens of focal length f will form a magnified real image of an object, if the object is placed.
A ray of light travelling in the direction \(\frac{1}{2} (\hat i + \sqrt 3 \hat j)\) is incident on a plane mirror. After reflection it travels along the direction \(\frac{1}{2} (\hat i - \sqrt 3 \hat j)\) The angle of incidence is:
Twinkling of stars is due to atmospheric
An optical fibre has a core material of refractive index of 1.55 and cladding material of refractive index of 1.50. The numerical aperture of the fibre is