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Question (1)

QN00271

A sundial measures time by observing the

(A) speed of wind
(B) position of stars
(C) changing position of a shadow
(D) level of sand

Correct Answer: C

Explanation:

The shadow changes position with the movement of the Sun.

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Question (2)

QN00272

In a water clock of the floating bowl type, time is measured by the

(A) colour of water
(B) sinking of the bowl after filling with water
(C) temperature of water
(D) speed of wind

Correct Answer: B

Explanation:

The bowl sinks after filling with water in a fixed time.

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Question (3)

QN00273

Which device measures time using sand flowing from one bulb to another?

(A) Sundial
(B) Candle clock
(C) Hourglass
(D) Pendulum

Correct Answer: C

Explanation:

An hourglass uses flowing sand to measure time.

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Question (4)

QN00274

A candle clock measures time using the

(A) shadow of flame
(B) melting of wax with markings
(C) sound produced by candle
(D) smoke released

Correct Answer: B

Explanation:

Markings on the candle show passage of time as it burns.

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Question (5)

QN00275

The SI unit of time is

(A) hour
(B) minute
(C) second
(D) day

Correct Answer: C

Explanation:

Second is the SI unit of time.

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Question (6)

QN00276

Which of the following is written correctly?

(A) 5 Sec
(B) 5 secs
(C) 5 s
(D) 5 s.

Correct Answer: C

Explanation:

Symbols of SI units are written in lowercase without full stop.

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Question (7)

QN00277

The symbol used for minute is

(A) M
(B) min
(C) Min
(D) m

Correct Answer: B

Explanation:

The correct symbol for minute is min.

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Question (8)

QN00278

One hour is equal to

(A) 360 s
(B) 600 s
(C) 3600 s
(D) 6000 s

Correct Answer: C

Explanation:

1 h = 60 min and 1 min = 60 s, so 1 h = 3600 s.

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Question (9)

QN00279

A pendulum completes one oscillation when it moves from

(A) mean position to one extreme position
(B) one extreme position to mean position
(C) one extreme position to the other only
(D) one extreme position to the other and back again

Correct Answer: D

Explanation:

One complete to-and-fro motion is one oscillation.

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Question (10)

QN00280

The time taken by a pendulum to complete one oscillation is called

(A) speed
(B) time interval
(C) time period
(D) frequency

Correct Answer: C

Explanation:

Time period is the time for one oscillation.

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Question (1)

A sundial measures time by observing the

Explanation:

Link:

Question (2)

In a water clock of the floating bowl type, time is measured by the

Explanation:

Link:

Question (3)

Which device measures time using sand flowing from one bulb to another?

Explanation:

Link:

Question (4)

A candle clock measures time using the

Explanation:

Link:

Question (5)

The SI unit of time is

Explanation:

Link:

Question (6)

Which of the following is written correctly?

Explanation:

Link:

Question (7)

The symbol used for minute is

Explanation:

Link:

Question (8)

One hour is equal to

Explanation:

Link:

Question (9)

A pendulum completes one oscillation when it moves from

Explanation:

Link:

Question (10)

The time taken by a pendulum to complete one oscillation is called

Explanation:

Link:

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