The magnification produced by a spherical mirror is +0.75. The image is:
‘Virtual, erect and diminished
The magnification (m) produced by a spherical mirror is given by the formula:
m = - (Image Height / Object Height) = (Image Distance / Object Distance)
Given the magnification is +0.75, it indicates that the image is virtual and erect. For mirrors, a positive magnification generally means the image is virtual and erect since real images produced by mirrors are inverted, leading to a negative magnification.
Furthermore, a magnification value less than 1 (m = +0.75) suggests that the image is smaller than the object, thus it is diminished.
Based on this analysis, the image is virtual, erect, and diminished.
An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image is formed at a distance of:
When white light is dispersed by a glass prism into seven colours, out of the following colours which colour will be deviated the least?
When white light falls on a glass prism, it splits into seven colours. The phenomena is known as:
The centre of the reflecting surface of a spherical mirror is a point called the _______.
The absolute refractive index of air is:
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
The power of a lens is -2.5 D. The type of lens and its focal length are respectively: