The circuit diagram for finding the galvanometer resistance is drawn below. Which one of the following is a correct step in this procedure?

Key K 1 should be inserted only after high value of R is taken out from the resistance box.

K 1 should be inserted before the high value of R is taken out from the resistance box.

The key K 2 must be kept closed throughout the experiment.

The key K 1 and the key K 2 should not remain closed together at any time during the experiment.

A student has chosen different scales on two axes in a 1 u Vs 1 v graph for a convex lens. Which of the following statements is correct for the graph?

The magnitude of the slope will not be equal to one.

The graph will not be a straight line.

The slope of the graph will not be negative.

HARD

Earn 100

A battery with emf $V_{E}$ and resistance $R$ is used to deflect the galvanometer by angle $θ$ , allowing one to determine the resistance $G$ of the device using the half deflection method. The equation links $G$ , $R$ and $S$ , where $S$ is shunt of resistance required to obtain half deflection will be

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Important Questions on Experiments Related to Optics

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following is the purpose of using the lycopodium powder in the experiment to find the refractive index of glass?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

The circuit diagram for finding the galvanometer resistance is drawn below.

Question Image

Which one of the following is a correct step in this procedure?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which of the following is the primary apparatus used in the Half-Deflection Method to find galvanometer resistance?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

A student has chosen different scales on two axes in a

\frac{1}{u}

\frac{1}{v}

graph for a convex lens. Which of the following statements is correct for the graph?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following must be the first step in finding the resistance of the galvanometer using half deflection method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following apparatus is not required for finding the resistance of a galvanometer by the half deflection method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Three observations were taken to find the refractive index of the material of glass slab. The reading for the mark on the paper $(R_{1})$ , The reading on the mark of the paper with slab $(R_{2})$ , and the reading for lycopodium powder $(R_{3})$ . Which of the following will be the correct formula for finding the refractive index?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

When using the Half-Deflection Method, which of the following actions can introduce an error in the measurement of galvanometer resistance?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following is the incorrect step in the procedure of finding the galvanometer resistance by half deflection method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following precautions must be taken to find the resistance of a galvanometer?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

The graph between

\frac{1}{u}

and

\frac{1}{v}

is drawn for various positions of the object in front of a convex lens. The focal length of the lens will be

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Why a high value of resistance in series with the galvanometer is preferred while finding the galvanometer resistance by half deflection method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Readings for shunt resistance

(S)

and the resistance box

(R)

are taken to find the galvanometer resistance by the half-deflection method. To calculate the resistance of the galvanometer using the graphical method, which one of the following graphs must be plotted?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Observations are to be taken to plot a

u - v

graph for the convex lens. Which of the following options is correct for the position of the object needle?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which precaution is necessary to achieve accurate results when using the Half-Deflection Method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

The deflection produced in a galvanometer is directly proportional to which one of the following factors?

EASY

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Cotyledons are also called-

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

When using the Half-Deflection Method, what can be inferred if the galvanometer does not show a half-scale deflection?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Which one of the following steps is taken to reduce the current through the galvanometer to half of its previous value in the half-deflection method?

MEDIUM

Physics>Practical Physics>Experiments Related to Optics>Lab Activity: To Determine Focal Length of a Convex Lens by Plotting Graphs

Why is it necessary to introduce high resistance from the resistance box in the circuit during the half deflection method?

A battery with emf VE and resistance R is used to deflect the galvanometer by angle θ, allowing one to determine the resistance G of the device using the half deflection method. The equation links G, R and S, where S is shunt of resistance required to obtain half deflection will be

Important Questions on Experiments Related to Optics

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