Angle of incidence is
The angle of incidence is the angle formed between the incident ray and the normal to the reflecting surface. Explanation... View Article
Latest Posts
The image formed by plane mirror is
The image formed by a plane mirror is always virtual and erect. What is a Plane mirror? A plane mirror... View Article
Which among the following is true for a plane mirror?
Answer (d) All the above What is a Plane mirror? A plane mirror is a flat mirror that reflects light... View Article
Which of the following letter does not show lateral inversion?
The letter I does not show lateral inversion. It appears the same after reflection.
The focal length of a plane mirror is
The focal length of a plane mirror is infinity. Before letting know about the focal length of plane mirrors we... View Article
Which of the following letter shows lateral inversion?
The letter ‘L’ shows lateral inversion. Rest all appear same after reflection.
In a lateral inversion
In a lateral inversion, the object’s left side becomes the right side of the image and vice-versa. What is a... View Article
Virtual image forms
Virtual image forms when rays of light do not actually meet, but appear to meet when produced backwards. ... View Article
Raj is standing in front of a plane mirror. The distance between Raj and his image is 100cm. If the distance between the mirror and image is x. What could be the possible value of x?
For a plane mirror, the distance between the object and the mirror is equal to the distance between the mirror... View Article
The refractive index is
The refractive index is the ratio of the sine of the angle of incidence to the sine of the angle... View Article
A metallic square loop ABCD is moving in its own plane with velocity v in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced
Both AD and BC are straight conductors moving in a uniform magnetic field and emf will be induced in both. This will cause electric... View Article
Fill in the Blank
Substances through which heat is easily conducted are known as _____. Answer: Conductors Explanation: Substances through which heat is easily... View Article
What is the heat required to raise the temperature of a body by 1 °C called?
The heat required to raise the temperature of a body by 1 °C called Thermal/heat capacity. It is expressed as... View Article
The figure shows the magnetic field lines in a magnetic field. A, B and C are three points in this field. At what point is the magnetic field minimum?
At B since the magnetic field lines are farthest at B.
How many foci does a lens have?
All optical elements have two foci. Following are a few important points to note about the foci: For mirrors, the foci... View Article
The _____________ is a safety device used in case of overloading and short-circuits.
The electric fuse is an important component of all domestic circuits. Overloading can occur when the live and the neutral... View Article
Substances which allow electric charge to flow through them are called
Conductors allow electric charge to flow through them. Electrical conductors have free electrons in their outermost shell giving them the property... View Article
Which was the natural magnet found in magnesia?
Lodestone was found in magnesia. Loadstone is a naturally occurring piece of the mineral magnetite. The earliest reference to loadstone’s... View Article
Which of the following term is not associated with a lens?
A) Focal length B) Efficiency C) Radius of curvature D) Myopia Option B) Efficiency is not associated with a lens.
What is the reason for the diamond sparkle?
Diamond sparkle because of total internal reflection. Total internal reflection is a phenomenon that occurs at the boundary between two mediums,... View Article
