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India dominated the Asian Yogasana Sport Championship held in Delhi by securing a total of 87 medals : 83 gold , 3 silver , and 1 bronze . This set a record and demonstrated India’s leadership in the sport across Asia.
A light ray enters a glass slab from air at 60° incidence. If refractive index of glass is √3, what is angle of refraction?
The functioning of a quartz crystal in a watch is based on which principle?
In a plane electromagnetic wave. the electric field oscillates sinusoid ally at a frequency of 3 × 108 Hz and amplitude 36 V/m. Find the am...
A plane mirror is placed on a wall. A man walks directly toward the mirror at 2 m/s. The speed at which his image approaches him is:
Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly i...
The apparent weight of a person in a lift moving downward with uniform acceleration is:
A decibel is –
An image formed by a plane mirror is ______.
In a diffraction experiment using a single slit, the angular width of central maximum decreases when:
What is the electrical charge of a neutrino?
