Time

Q. Sundial is a device that measures _____.

1. distance
2. temperature
3. time
4. volume

Q. The time period between two consecutive sunrises or sunsets is called a .

1. solar year
2. solar day
3. solar eclipse

Q.

Time period from one noon to next noon is called ____

1. day

2. Solar noon

3. Solar day

4. Solar night

Q.

Which of the following cannot be used for the measurement of time?

1. A leaking tap

2. Simple pendulum

3. Shadow of an object during the day

4. Blinking of eyes

Q.

There are ___ seconds in a day.

1. $36000s$

2. $86400s$

3. $86000s$

4. $24000s$

Q.

Explain the Following
(a) What do you understand by the term mean solar day?

(b) How many hours are there in one mean solar day?

(c) How many minutes are there in one mean solar day?

(d) How many seconds are there in one mean solar day?

Q. A sundial is a device that measures:

1. Distance
2. Density
3. Time
4. Speed

Q. From the following options, pick the unit(s) for measuring time?

1. Fortnight
2. Metre
3. Season
4. Ayanam

Q.

A bus departs from the bus stand at $14:20$ hours. It takes $6$ hours and $23$ minutes to reach the destination bus stand. What will be the time of arrival shown on a $12-$hour clock?

1. $08:20$ PM

2. $10:23$ AM

3. $08:43$ PM

4. $10:43$ PM

Q.

Harish ran a certain distance faster than Suresh. Which fundamental physical quantity/quantities is/are measured for comparing their speeds?

1. only length

2. only time

3. both length and time

4. speed

Q.

A bus departs from the bus stand at $\text{14:20 hours}$. It takes $\text{6 hours}$ and $\text{23 minutes}$ to reach the destination bus stand. What will be the time of arrival shown on a $\text{12-hour}$ clock?

1. $\text{08:43 a.m.}$
2. $\text{08:20 a.m.}$
3. $\text{08:43 p.m.}$
4. $\text{10:43 p.m.}$

Q. Why is the distance between stars expressed in light years ? What do you understand by the statement that a star is eight light years away from the earth

Q. A day has seconds.

1. $24000$
2. $36000$
3. $86400$

Q. Harish ran from A to B faster than Suresh. Which fundamental physical quantity/quantities is/are required for comparing their speeds?

1. Only distance
2. Only time
3. Both distance and time
4. Only mass

Q.

$23:25:00$ in $12-$hour format will be written as:

1. $1:00PM$

2. $10:30AM$

3. $11:25PM$

4. $11:25AM$

Q. There are seconds in 3 minutes.

1. $90$
2. $120$
3. $180$

Q.

One nanosecond = ____ seconds

1. one-thousandth

2. one-millionth

3. one-hundredth

4. one-billionth

Q. Why is the distance between stars expressed in light years ? What do you understand by the statement that a star is eight light years away from the earth

Q.

Which of the following is incorrect?

1. 1 mean solar day = 24 hours

2. 1 hour = 60 minutes

3. 1 minute = 100 seconds

4. 10 years = 10 decades

Q. Two hours is equivalent to .

1. 1200 minutes
2. 120 minutes
3. 60 minutes

Q.

There are ___ seconds in 3 minutes.

1. $120s$

2. $160s$

3. $180s$

4. $90s$

Q.

The standard unit of speed in SI system is :

1. meter second

2. meter per second

3. second

Q. 1 hour = ___ minute(s).

1. 0.06 minutes
2. 6 minutes
3. 10 minutes
4. 60 minutes