EASY
Earn 100
How are the values of and represented at point A on the graph for a concave mirror?
41.07% studentsanswered this correctly
Important Questions on Experiments Related to Optics
HARD
In the meter bridge experiment, why is it important to ensure that the deflections in the galvanometer are in opposite directions when the jockey is moved along the wire?
MEDIUM
Which of the following stages is not a part of the correct procedure in a meter bridge experiment to find the resistance and resistivity of a wire?
HARD
In an experiment of finding focal length of a concave mirror by u-v method, a student prepares following graph of u versus v graph.
Focal length of mirror is nearly
MEDIUM
What is the principle behind the null point in a meter bridge experiment?
MEDIUM
A resistance wire connected in the left gap of the meter bridge balances a resistance in the right gap. This happens at a point where the bridge wire is divided in the ratio of . Assuming the length of the wire to be , calculate the length of the resistance wire?
MEDIUM
What should be done in a meter bridge experiment to rectify a deflection in one direction indicated by the galvanometer if the null point is not reached?
MEDIUM
A metre bridge is balanced with known resistance in the right gap and a metal wire in the left gap. If the metal wire is heated the balance point
MEDIUM
Why is it important to make sure the optical bench's center line and the mirror's major axis are parallel when determining v values for various values of u and the focal length in the case of a concave mirror?
MEDIUM
In a meter bridge experiment, the null deflection was obtained at a length of . The known resistance used is . What is the unknown resistance in the wire?
EASY
Which one of the following is the correct position of the object pin to find the focal length of a concave mirror?
MEDIUM
Why is the jockey moved gently from one end to the other during the metre bridge experiment?
HARD
A student was performing a meter bridge experiment in a laboratory with a standard resistance and a resistance wire . He found that the balancing length is . Then he replaced by a wire of half the length and half the diameter, those of (of the same material), then the balancing distance (in ) will now be
MEDIUM
A student took an observation and found that the distance of the image pin is equal to and the distance of the object pin is equal to from the pole of the concave mirror. Which one of the following formulae and the values must be used for calculations?
HARD
In a meter bridge experiment, a wire of length and uniform cross-sectional area is used to measure its resistance. The bridge is balanced at a point P where the lengths of the wire on either side are in the ratio . If the known standard resistance is and the length of the wire is L, the resistance of the wire is given by:
MEDIUM
A concave mirror lab experiment being conducted by a student. What should he adjusted to obtain a clear, sharp image on the screen in front of the concave mirror?
MEDIUM
What will happen to the observed resistance of the wire in a meter bridge experiment if the length of the wire on one side of the jockey is increased while maintaining the same current?
HARD
As shown, in a lab experiment, a student makes a graph based on his observations. In the u-v graph for a concave mirror, he drew lines OA, AB, and AD. what is the significance of point A?
MEDIUM
Why Index correction is required while finding the focal length of a concave mirror?
HARD
In the meter bridge experiment, why is the bridge wire made of a material with a low temperature coefficient?
