Rishit and Raghav measured the length of the stage in their school auditorium using their own feet. Both of them repeated the procedure twice.
(a) Would both of them get the correct measurement? Justify your answer.
(b) Rishit measured the length of the stage in 120 seconds. Calculate the number of minutes Rishit spent for the measurement.
Please tell answer in brief by solving correctly
Answers
Answer:
The distance between Delhi and Mumbai is usually expressed in units of
(a) decametre
(b) metre
(c) centimetre
(d) kilometre
Which of the following does not express a time interval?
(a) A day
(b) A second
(c) A school period
(d) Time of the first bell in the school
Fig. 10.1 shows a measuring scale which is usually supplied with a geometry box. Which of the following distance cannot be measured with this scale by using it only once?
(a) 0.1 m
(b) 0.15 m
(c) 0.2 m
(d) 0.05 m
A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. 10.2.
The length of the ribbon is between
(a) 1.15 m – 1.25 m
(b) 1.25 m – 1.35 m
(c) 1.50 m – 1.60 m
(d) 1.60 m – 1.70 m
Paheli moves on a straight road from point A to point C. She takes 20 minutes to cover a certain distance AB and 30 minutes to cover the rest of distance BC. She then turns back and takes 30 minutes to cover the distance CB and 20 minutes to cover the rest of the distance to her starting point. She makes 5 rounds on the road the same way. Paheli concludes that her motion is
(a) only rectilinear motion.
(b) only periodic motion.
(c) rectilinear and periodic both.
(d) neither rectilinear nor periodic.
Bholu and Golu are playing in a ground. They start running from the same point A in the ground and reach point B at the same time by following the paths marked 1 and 2 respectively as shown in Fig. 10.3. Which of the following is/are true for the given situation.
As compared to Golu, Bholu covers a
(a) longer distance but with a lower speed.
(b) longer distance with a higher speed.
(c) shorter distance with a lower speed.
(d) shorter distance with a higher speed.
Answer:
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