Question
Which of the following electromagnetic waves are used
for detection like Geiger tubes?Solution
The correct answer is A
Two boats X and Y start towards each other from two places, 155 km apart. Speed of the boat X and Y in still water are 14 km/hr and 17 km/hr respectivel...
A boat travels 150 km downstream in 6 hours. The difference between its downstream speed and upstream speed is 3 km/h. What is the ratio of the boat's s...
The speed of boat downstream and upstream is 36 km/hr and 26 km/hr respectively. Time taken to travel a distance of (k + 60) km downstream and (l + 40) ...
A boat covers a certain distance upstream in 6 hrs and comes back to starting point with current in 3 hrs, If boat's upstream speed is 15 km/hr, then, f...
A boat sails 150 km in downstream direction in 5 hours. If the upstream speed is one-third of its downstream speed, calculate the time it will take to c...
Speed of a boat in still water is 15 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 150 km upstream and 225 km downstre...
In still water, a boat can cover 30 km in 90 minutes. Speed of the stream is 20% of the speed of the boat in downstream. Find the time taken by the boat...
A man can row upstream at 18 km/hr and downstream at 24 km/hr. Find the man’s rate in still water and the rate of the current.
...The circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii?
The speed of a boat in still water is 20 km/h, and the speed of the river flow is 4 km/hr. If the total time taken for the boat to go from point 'X' to ...
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