Question
A bag contains 14 black and 16 white balls. One
ball is drawn at random. What is the probability that the ball drawn is white?Solution
The wave nature of matter was proposed by:
A ray of light travels from glass (n=1.5) to air (n=1). For which angle of incidence will the ray just graze the surface (total internal reflection limit)?
The unit of measurement of noise is –
Planck’s constant has dimensions equivalent to which of the following?
The pitch of a sound is determined by its:
What is the electrical charge of a neutrino?
Who laid the foundations of Quantum Theory?
The surface tension of water on adding detergent to it –
A convex mirror and a concave mirror face each other at a distance of 30 cm. A point object is placed midway. The final image formed by double reflectio...
A car increases its speed from 10 m/s to 30 m/s in 5 seconds. What is its acceleration? Â
