Question
Under Soil Health Card Scheme, what is the cycle of
testing of soil for irrigated area and area from which single sample is to be drawn?Solution
Soil sample is taken from 2.5 ha area in irrigated and10 ha area in rainfed conditions once in every 2 years.
A rear-view mirror for driving is –
The amplitude of the sound wave depends on the
What is the frequency of Ultrasonic Waves?
The instrument which uses sound waves to measure the depth of oceans is –
What term describes the rate of change of velocity?Â
The hair of shaving brush clings together when removed from water due to –
Which one of the following is used to remove Astigmatism for a human eye?
Which medium cannot propagate sound waves?
Why a person can jump higher on the Moon’s surface than the Earth?
Which of the following layers of the atmosphere makes Radio Communication possible?