Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- The refractive index of fused quartz is 1·46 and that of sapphire is 1·77. If v_q is the speed of light in quartz and v_s is the...
- In case of a concave mirror, if an object is kept between principal focus F and pole P of the mirror, then which one of the...
- The image we see in plane mirror is
- Which of the following are the primary colours of light ?
- According to the New Cartesian Sign Convention, which one of the following is correct in respect of the formula 1 f = 1 v + 1 u ,...
- Which one of the following statements is not correct for light rays ?
- A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the...
- Twinkling of stars is due to
- If a ray of light enters from a rarer medium to a denser medium at zero angle of incidence, it would
- Power of a lens of focal length 25 cm is
- Spherical mirror formula relating an object distance 'u', image distance 'v' and focal length of mirror 'f' may be applied to a...
- When a light beam falls on a triangular glass prism, a band of colours is obtained. Which one of the following statements is...
- The image of an object formed by a plane mirror is
- The twinkling of a star is due to the atmospheric
- What is the magnification produced by a concave lens of focal length 10 cm, when an image is formed at a distance of 5 cm from...
- Two convex lenses have focal lengths of 50 cm and 25 cm, respectively. If these two lenses are placed in contact, then the net...
- The refractive index of crown glass is close to 3/2. If the speed of light in air is c, then the speed of light in the crown...
- In the dispersion of white light by a common glass prism, which one among the following is correct ?
- Which one of the following telescopes contains only mirrors ?
- The streaming of light beams coming from the Sun through trees is said to have suggested that light travels in straight line. The...
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