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Chapter 16: Problem 2223

The power of plane glass is (A) \(\infty\) (B) 0 (C) \(\overline{2 \mathrm{D}}\) (D) \(4 \mathrm{D}\)

Short Answer

Expert verified
The power of plane glass is 0 (option B) since its parallel surfaces do not change the direction of incoming light rays, meaning it doesn't have any converging or diverging power.

Step by step solution

01

Understand Lens Power and Plane Glass Properties

Lens power is the property of a lens or optical system to converge or diverge incoming parallel rays of light. It is measured in Dioptres (D) and can be calculated using the formula: Power (P) = \(\frac{1}{f}\) where f is the focal length of the lens in meters. Plane glass has parallel surfaces which do not change the direction of incoming light rays, meaning it doesn't have any converging or diverging power.
02

Calculate the Power of Plane Glass

Since plane glass doesn't have any converging or diverging power, its focal length can be considered to be infinite. Plugging this into the power formula: Power (P) = \(\frac{1}{\infty}\)
03

Simplify the Result

Simplifying the expression: Power (P) = 0
04

Choose the Correct Option

Comparing the result with the given options, we can conclude that the correct answer is: (B) 0

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Most popular questions from this chapter

The width of a single slit, if the first minimum is observed at an angle of \(2^{\circ}\) with a wavelength of light \(6980 \AA\) is \(\mathrm{mm}\) (A) \(0.2\) (B) \(2 \times 10^{-5}\) (C) \(2 \times 10^{5}\) (D) \(0.02\)

If the critical angle for total internal reflection from a medium to vacuum is \(30^{\circ}\) then velocity of light in the medium is \(-\mathrm{ms}^{-1}\left(\right.\) take $\left.\mathrm{c}=3.0 \times 10^{8} \mathrm{~ms}^{-1}\right)$ (A) \(2.0 \times 10^{8}\) (B) \(1.5 \times 10^{8}\) (C) \(10^{8}\) (D) \(1.5 \times 10^{-8}\)

The wave length corresponding to photon is \(0.016 \AA\). Its K.E. \(\quad\) J. $\left(\mathrm{h}=6.66 \times 10^{-34} \mathrm{SI}, \mathrm{c}=3.0 \times 10^{8} \mathrm{~ms}^{-1}\right)$ (A) \(1.237 \times 10^{-13}\) (B) \(1.237 \times 10^{13}\) (C) \(12.37 \times 10^{-13}\) (D) \(12.37 \times 10^{+13}\)

For a prism of refractive index \(\sqrt{3}\), the angle of minimum deviation is equitation is equal to the angle of prism, then angle of the prism is (A) \(60^{\circ}\) (B) \(90^{\circ}\) (C) \(45^{\circ}\) (D) \(180^{\circ}\)

A prism of certain angle deviates the red and blue rays by \(8^{\circ}\) and \(12^{\circ}\) respectively. Another prism of the same prism angle deviates the red and blue ray by \(10^{\circ}\) and \(14^{\circ}\) respectively. The prism are small angle and made of different materials. The dispersive powers of the materials of the prisms are in the ratio (A) \(5: 6\) (B) \(9: 11\) (C) \(6: 5\) (D) \(11: 9\)
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