A. undeviated and undisplaced at a lower speed B. deviated and undisplaced at a lower speed C. deviated and displaced…
A. is opaque B. is a poor conductor C. wets glass D. has low vapour pressure Correct Answer: Option B…
A. 10 cm B. 30 cm C. 40 cm D. 60 cm Correct Answer: Option B - 30 cm Explanation…
A. 528 m/s. B. 264 m/s. C. 132 m/s. D. 66 m/s. Correct Answer: Option B - 264 m/s. Explanation…
A. difference in temperature between the body and its surroundings B. temperature of its surroundings C. ratio of the temperature…
A. myopia B. Astigmatism C. Presbyopia D. Chromatic aberration Correct Answer: Option B - Presbyopia
A. frequency B. amplitude C. energy D. wave length Correct Answer: Option C - energy
A. at the principal focus B. beyond the centre of curvature C. between the principal focus and the centre of…
A. They are formed by two identical waves traveling in opposite directions B. they can be transverse or longitudinal C.…
I. Temperature. II. Density of air molecules III. Pressure IV. Pitch A. I and II only B. II and IV…