Advertisements
Advertisements
Question
The photograph of a house occupies an area of 1.75 cm2on a 35 mm slide. The slide is projected on to a screen, and the area of the house on the screen is 1.55 m2. What is the linear magnification of the projector-screen arrangement?
Advertisements
Solution
Area of the house on the slide = 1.75 cm2
Area of the image of the house formed on the screen = 1.55 × 104 cm2
Arial magnification, ma =` "Area of image"/"Area of object" = (1.55 xx 10^4)/1.75 `
= 8857.14
∴ Linear magnifications, `m_l = sqrtm_a`
=`sqrt(8857.14)` = 94.11
APPEARS IN
RELATED QUESTIONS
What do you mean by significant figures?
How many significant figures are present in the 5005?
How many significant figures are present in the 126,000?
How many significant figures are present in the 2.0034?
How many significant figures should be present in the answer of the following calculation:-
`(0.02856 xx 298.15 xx 0.112)/0.5785`
How many significant figures should be present in the answer of the following calculation?
5 × 5.364
How many significant figures should be present in the answer of the following calculation?
0.0125 + 0.7864 + 0.0215
The mean diameter of a thin brass rod is to be measured by vernier callipers. Why is a set of 100 measurements of the diameter expected to yield a more reliable estimate than a set of 5 measurements only?
State the number of significant figures in the following:
6.320 J
Describe what is meant by significant figures.
Answer the following question.
Describe what is meant by order of magnitude.
The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.
Assertion (A): Significant figures for 0.200 is 3 where as for 200 it is 1.
Reason (R): Zero at the end or right of a number are significant provided they are not on the right side of the decimal point.
Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m?
The mass and volume of a body are 4.237 g and 2.5 cm3, respectively. The density of the material of the body in correct significant figures is ______.
Why do we have different units for the same physical quantity?
Which of the following measurements contains exactly two significant figures?
The radius of Earth is written as 0.64 × 10⁷ m in scientific notation. What is its order of magnitude?
The radius of Earth is expressed as 0.64 × 10⁷ m in scientific notation. What is its order of magnitude and number of significant figures?
