Question
A person sees a train passing over 2 km long bridge. The
length of the train is half that of bridge if the train clears the bridge in 6 mins. What is the speed of the train?Solution
Distance covered in 6/60 hours = (2 + 2/2) = 3 km Distance covered in 1 hour = 3 x (60/6) = 30 km So, speed of the train = 30 km/hr
Which property of a wave is related to its frequency?Β Β
Rain drops acquire spherical shape due to -
A device used for converting A.C. into D.C. is called β
A metallic conductor of circular cross-section has radius R. If current density varies as J = Jβ(1βr/R), the total current through the conductor is:...
A parallel plate capacitor is half-filled with a dielectric slab (K = 4). What is its effective capacitance, assuming plate separation d?
If the specific heat at constant pressure Cβ is greater than Cα΅₯ , the difference Cβ -Cα΅₯ is equal to:
What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as?
The threshold wavelength for a photoelectric surface is 540 nm. Will a light of energy 2.5 eV cause photoemission?
Which device is best suited for measuring the temperature inside metallurgical furnaces?
When do spring tides occur?