The National Dolphin Research Centre (NDRC), a pioneering institution for the study and conservation of the Gangetic dolphin, is situated in Patna, Bihar, contributing significantly to the preservation of this endangered species.
Which of the following statement is correct?
I. The incident ray, the normal at the point of incidence and the reflected ray all lie in the sa...
A stone of mass 0.3 kg tied to the end of a string is whirled round in a circle of radius 1.2 m with a speed of 20 rev./ mim in a horizontal plane. Wha...
The ratio of the total distance traveled by a body to the total time taken is its:
Which of the following pairs of phenomena illustrate the particle nature of the electromagnetic radiation?
The frequency of ultrasonic waves is:
In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
Current sensitivity of a moving coil galvanometer is 9 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 30 div/V. The...
Ultrasonic pulse echo technique, a non-destructive ultrasonic testing, is employed for any possible flaw detection in a metallic bar of thickness 30 cm...
A sugar solution in a tube of length 2.0 dm produces optical rotation of 12°. Then, the sugar solution is diluted to one half of its initial concentra...
When is the magnetic field strength considered strongest?
