KVPY Government Jobs Exams

Velocity of sound measured at a given temperature in oxygen and hydrogen is in the ratio -
(A) 1 : 4 (B) 4 : 1 (C) 1 : 1 (D) 32 : 1

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KVPY Other Question

A bus driving along at 39.6 kmph is approaching a person who is standing at the bus stop, while honking
repeatedly at an interval of 30 seconds. If the speed of the sound is 330 m/s, at what interval will the person
hear the horn ?
(A) 31 seconds
(B) 29 seconds
(C) 30 seconds
(D) the interval will depend on the distance of the bus from the passenger In Young's double slit experiment, the distance between the two slits is 0.1 mm, the distance between the slits
and the screen is 1 m and the wavelength of the light used is 600 nm. The intensity at a point on the screen is
75% of the maximum intensity. What is the smallest distance of this point from the central fringe ?
(A) 1.0 mm (B) 2.0 mm (C) 0.5 mm (D) 1.5 mm