The speed of sound in a liquid is …………..than that in gases:
An object is placed at the Centre of curvature of a concave
mirror. The image produced by the mirror is located:
The center of curved surface of spherical mirror is called:
Which of the following quantities is not change during
refraction of light:
An object is 14 cm in front of a convex mirror. The image is
5.8 cm behind the mirror. What is the focal length of the mirror:
The screen of a cathode ray tube consists of a thin layer
of:
If a ray of light in glass is incident on an air surface at
an angle greater than the critical angle, the ray will:
