Birsa Munda an Indian tribal freedom fighter belonged to Munda tribe. • He was responsible for Munda Rebellion that arose in Jharkhand and Bihar. • He is also known as "Dharti Abba" or the Earth father. • The British government was taking away Munda tribe's lands and missionaries were criticising Munda culture. • The political aim of the birsa movement was to drive away missionaries, moneylenders, traders, Hindu landlords and the government and to establish Munda Raj.
Match the following machines with their working principles:
(i) Electric motor - (a) Heat energy into mechanical energy
(ii) Steam engin...
In order to investigate the internal atomic structure of crystals, we make use of:
The surface tension of water on adding detergent to it –
In a concave mirror which of the following pair of position of object – size of the image is correct?
I. At infinity – point sized
What is the work done by a centripetal force on an object moving in a circular path at constant speed?
In an electric motor, energy is transformed from:
A body is thrown upward with an initial velocity of 20m/s. How much time will it take to reach its maximum height. (g=10m/s)
Which of the following does not affect the value of acceleration due to gravity?
In the absence of ozone layer, which rays will enter into atmosphere?
Which instrument is used to measure the moisture content in the air?
