Question
A meter stick moves along its length with a certain
speed. The apparent length of the moving meter stick as measured by a stationary observer on the ground is found to be 98 cm. Then, the velocity v of the meter sticks in terms of the speed" of light in vacuum c will be:Solution
The correct answer is B
The speed of a boat in still water is 30 km/hr. If the boat covers 160 km in upstream in 8 hours, then find the time taken by the boat to travel 120 km ...
Find the total distance covered by boat in each upstream and downstream in 6 hours if the speed of boat in still water and speed of current is 15 km/h a...
A boat can cover 132 km in downstream in 11 hours and 170 km in upstream in 17 hours. Find the speed of boat in still water
The speed of current is 40 km/hr. If the speed of the boat in still water had been 10 km/hr more than the original speed then it would take 5.5 hours to...
A boat takes 3 hours to travel 24 km downstream and 4 hours to travel 16 km upstream. What is the speed of the current?
The speed of the stream is 15 km/h. Boat ‘A’ covers 100 km distance against the stream in 4 hours and boat ‘B’ covers 90 km distance against the...
A boat takes 2 hours to cover 60 km downstream. If the speed of the stream is 3 km/h, then how far will it go upstream in 6 hours?
A boat travels 200 km downstream in 10 hours. The difference between its downstream speed and upstream speed is 5 km/h. What is the ratio of the boat's ...
- Ronit takes a total of 24 hours to travel 128 km downstream and then the same 128 km distance upstream. Additionally, he takes 30 hours to cover 480 km dow...
The speed of a boat in still water is 12 km/h , and the speed of the stream is 3 km/h . How much time will it take to travel 30 km upstream  and�...
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