In laboratory work, time intervals of few seconds are measured with the help of :

a stop watch

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a wrist watch

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a wall clock

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an hour glass

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Solution

The correct option is C a stop watch
In lab work,we often measure short time intervals of the order of few seconds. For this purpose,we use stop watch or a stop clock.

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Question 2

Two clocks A and B are shown in the Figure. Clock A has an hour and a minute hand, whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks?

(a) Time interval of 30 seconds can be measured by clock A

(b) Time interval of 30 seconds cannot be measured by clock B

(d) Time interval of 4 minutes 10 seconds can be measured by clock A

Q. How is a stop watch used to measure the time interval of an event?

Q. A wrist-watch loses 10 seconds every 8 hours. In how much time will it lose 15 sec?

Q. What is the price range of ordinary wall clocks of company X?
I. The price range of ordinary wrist watches of company X is Rs 400 to Rs 600.
II. The price range of ordinary wall clocks of company X is 50 percent that of their ordinary watches.

Q. A wall clock uses a vertical spring-mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will
(a) run slow
(b) run fast
(c) stop working
(d) give correct time

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In laboratory work, time intervals of few seconds are measured with the help of :

The correct option is C a stop watchIn lab work,we often measure short time intervals of the order of few seconds. For this purpose,we use stop watch or a stop clock.

The correct option is C a stop watch
In lab work,we often measure short time intervals of the order of few seconds. For this purpose,we use stop watch or a stop clock.