0.5
For a real object, f = −10 cm and v = −5 cm.
\(1/u=1/v-1/f=-1/5+1/10=-1/10.\)
Thus u = −10 cm and m = v/u = 0.5.
Similar Questions
A rainbow is produced due to which one of the following phenomenon?
Consider the following statements about a microscope and a telescope:
1. Both the eyepiece and the objective of a microscope are convex lenses.
2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.
3. The magnification of a telescope increases with the increase in focal length of its objective.
4. The magnification of a microscope increases with the increase in focal length of its objective.
Which of the statements given above are correct?Tyndall effect is a phenomenon of
Power of a lens of focal length 25 cm is
When a light beam falls on a triangular glass prism, a band of colours is obtained. Which one of the following statements is correct in this regard ?
If the focal length of a convex lens is 50 cm, which one of the following is its power?
The refractive indices of two media are denoted by n 1and n 2, and the velocities of light in these two media are respectively v 1and v 2. If n 2/n 1is 1.5, which one of the following statements is correct?
Which one of the following statements is correct for a plane mirror?
An object is placed in front of a convex mirror. Which one of the following statements is correct?
The human eye is like a camera that has a lens with:
Important Questions from Refraction and Reflection
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
- The refracting angle of a prism is $A$. The refractive index of the material of the prism is $\frac{1+\cos A}{\sin A}$. The angle of minimum deviation is:
