Black arm in Cotton is caused due to –
Bacterial blight: Xanthomonas campestris p.v malvacearum caused black lesions on stem and branches, premature drooping off of the leaves resulting in die back known as Black arm.
A 220 V, 100 W bulb is connected to a 110 V source. Calculate the power consumed by the bulb
A battery of emf 12 V and internal resistance 4 ohm is connected to a resistor. If the current in the circuit is 0.6 A, what is the resistance of the re...
Ultrasonic pulse echo technique, a non-destructive ultrasonic testing, is employed for any possible flaw detection in a metallic bar of thickness 30 cm...
When a forward bias is applied to a p-n junction, it
The correct option, if speeds of gamma rays, X-rays and microwave are Vg, Vx an Vm respectively will be
A constant retarding force of 20 N is applied to a body of mass 10 kg moving initially with a speed of 12 m s–1. How long does the body tak...
Which one of the following is called a red planet?
Going from fluorine to chlorine, to bromine and then to iodine, the electro negativity:
If an agent does a work 'W' in time 't', then the power is given by:__________.
In order to investigate the internal atomic structure of crystals, we make use of:
