Chapter 16: Problem 2215
The no. of images formed between two parallel plane mirror are (A) \(\infty\) (B) 0 (C) 180 (D) 360
Chapter 16: Problem 2215
The no. of images formed between two parallel plane mirror are (A) \(\infty\) (B) 0 (C) 180 (D) 360
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Get started for freeA concave lens forms the image of an object such that the distance between the object and the image is \(10 \mathrm{~cm}\) and the magnification produced is \((1 / 4)\), the focal length of lens will be \(\mathrm{cm}\) (A) - 6.2 (B) \(-12.4\) (C) \(-4.4\) (D) \(-8.8\)
A plane polarized light is incident normally on the tourmaline plate. its \(\mathrm{E}^{\rightarrow}\) vectors make an angle of \(45^{\circ}\) with the optical axis of the plate. find the percentage difference between initial and final maximum values of \(\mathrm{E}^{\rightarrow}\) vectors. (A) \(19 \%\) (B) \(92 \%\) (C) \(50 \%\) (D) \(29 \%\)
In young's double slit experiment if the width of \(3^{\text {rd }}\) fringe is \(10^{-2} \mathrm{~cm}\), then the width of \(5^{\text {th }}\) fringe will be \(\mathrm{cm} .\) (A) \(10^{-2}\) (B) \(5 \times 10^{-2}\) (C) \(2 \times 10^{-2}\) (D) \(10^{+2}\)
In a thin prism of glass \(\left(a_{(n) g}=1.5\right)\) which of the following relation between the angle of minimum deviation \(\delta_{\mathrm{m}}\) and the angle of refraction \(\mathrm{r}\) will be correct? (A) \(\delta_{\mathrm{m}}=(\mathrm{r} / 2)\) (B) \(\left(\delta_{\mathrm{m}} / 2\right)=\mathrm{r}\) (C) \(\delta_{\mathrm{m}}=1.5 \mathrm{r}\) (D) \(\delta_{\mathrm{m}}=\mathrm{r}\)
A polariser is used for (A) produce polarised light (B) produce unpolarised light (C) produce unpolarised light (D) none of these
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