A Lens of Focal Length 25 Cm Is Placed 50

question 81

Multiple Choice

A lens of focal length 25 cm is placed 50 cm from an object. On the opposite side of the lens at a distance of 50 cm is a plane mirror. Where is the final image formed?

• A)50 cm from the lens on the object side
• B)35 cm behind the mirror
• C)35 cm in front of the mirror
• D)50 cm from the lens on the mirror side
• E)35 cm from the lens on the object side

Grasp the requirements for formatting documents according to MLA and APA styles.

Recognize the ethical considerations and academic standards involved in writing research papers, including plagiarism avoidance.

Comprehend the use of Word's reviewing and editing features to improve text quality.

Understand how to manage and evaluate sources for academic research.

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Definitions:

Variance

A measure of variability that denotes the average of the squared differences from the mean, showing how widely the values in a data set are spread.

Squared Deviations

Values obtained by subtracting the mean from each data point in a set, squaring the result to eliminate negative numbers, used in variance calculation.

Aptitude Test

An examination designed to measure a person's ability to develop skills or acquire knowledge, predicting future performance.

Sample Variance

A measure of the dispersion or spread of a set of sample data points around their sample mean.