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Question (11)

QN00281

The bob of a pendulum is suspended using a

(A) spring
(B) rod
(C) ribbon
(D) long thread

Correct Answer: D

Explanation:

A simple pendulum has a bob suspended by a long thread.

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Question (12)

QN00282

The motion of a pendulum is

(A) random
(B) oscillatory and periodic
(C) circular only
(D) non-repeating

Correct Answer: B

Explanation:

Pendulum motion repeats after equal intervals of time.

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Question (13)

QN00283

Galileo observed the swinging lamp in a

(A) palace
(B) laboratory
(C) church
(D) classroom

Correct Answer: C

Explanation:

Galileo observed a swinging lamp in a church.

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Question (14)

QN00284

The time period of a simple pendulum depends on its

(A) colour of bob
(B) mass of bob
(C) length
(D) shape of bob

Correct Answer: C

Explanation:

Time period changes with length of pendulum.

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Question (15)

QN00285

Two pendulums of equal length at the same place will have

(A) different time periods
(B) same time periods
(C) different masses only
(D) no oscillation

Correct Answer: B

Explanation:

Pendulums of same length have same time period.

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Question (16)

QN00286

A pendulum takes 20 s to complete 10 oscillations. Its time period is

(A) 0.5 s
(B) 2 s
(C) 5 s
(D) 10 s

Correct Answer: B

Explanation:

Time period = 20 ÷ 10 = 2 s.

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Question (17)

QN00287

A pendulum completes 25 oscillations in 50 s. The time period is

(A) 1 s
(B) 2 s
(C) 3 s
(D) 4 s

Correct Answer: B

Explanation:

Time period = 50 ÷ 25 = 2 s.

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Question (18)

QN00288

A train covers 180 km in 3 h. Its speed is

(A) 50 km/h
(B) 55 km/h
(C) 60 km/h
(D) 65 km/h

Correct Answer: C

Explanation:

Speed = 180 ÷ 3 = 60 km/h.

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Question (19)

QN00289

A bicycle moves 240 m in 40 s. Its speed is

(A) 4 m/s
(B) 5 m/s
(C) 6 m/s
(D) 8 m/s

Correct Answer: C

Explanation:

Speed = 240 ÷ 40 = 6 m/s.

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Question (20)

QN00290

A car moves at 72 km/h. Distance covered in 3 h will be

(A) 196 km
(B) 200 km
(C) 216 km
(D) 240 km

Correct Answer: C

Explanation:

Distance = 72 × 3 = 216 km.

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Question (11)

The bob of a pendulum is suspended using a

Explanation:

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Question (12)

The motion of a pendulum is

Explanation:

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Question (13)

Galileo observed the swinging lamp in a

Explanation:

Link:

Question (14)

The time period of a simple pendulum depends on its

Explanation:

Link:

Question (15)

Two pendulums of equal length at the same place will have

Explanation:

Link:

Question (16)

A pendulum takes 20 s to complete 10 oscillations. Its time period is

Explanation:

Link:

Question (17)

A pendulum completes 25 oscillations in 50 s. The time period is

Explanation:

Link:

Question (18)

A train covers 180 km in 3 h. Its speed is

Explanation:

Link:

Question (19)

A bicycle moves 240 m in 40 s. Its speed is

Explanation:

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Question (20)

A car moves at 72 km/h. Distance covered in 3 h will be

Explanation:

Link:

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