The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. The refractive index of the material of the lens is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the critical angle for total internal reflection from a medium to vacuum is , the velocity of light in the medium is:
1. \(1.5\times10^{8}\) m/s
2. \(\frac{3}{\sqrt{2}}\times10^{8}\) m/s
3. \(\sqrt{2}\times10^{8}\) m/s
4. \(3\times10^{8}\) m/s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn object is placed on the principal axis of a concave mirror at a distance of 1.5f ( f is the focal length). The image will be at:
1. -3f
2. 1.5f
3. -1.5f
4. 3f
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA plane-convex lens of unknown material and unknown focal length is given. With the help of a spherometer, we can measure the:
1. focal length of the lens.
2. radius of curvature of the curved surface.
3. aperture of the lens.
4. refractive index of the material.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFind the value of the angle of emergence from the prism given below for the incidence ray shown. The refractive index of the glass is .
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since:
1. a large aperture contributes to the quality
and visibility of the images.
2. a large area of the objective ensures better
light-gathering power.
3. a large aperture provides
a better resolution.
4. all of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of:
1. 30 cm from the plane mirror, it would be a
virtual image.
2. 20 cm from the plane mirror, it would be a
virtual image.
3. 20 cm from the lens, it would be a real image.
4. 30 cm from the lens, it would be a real image.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology