Choose the correct option:
Q1. Which of the following relations is correct?
(a) Speed = Distance X Time (b) Speed = Distance / Time (c) Speed = Time/Distance
(d) Speed= 1/Distance X Time
Q2. A bus moves with a speed of 80km/h for 15 minutes and then with a speed of 60km/h for
the next 15 minutes. The total distance covered by the car is ………….
(a)100km (b)50km (c) 35km(d)70km
Q3. The time taken by a pendulum of given length to complete one oscillation is ( )
(a)Different at different times (b) Same at all times (c) Increases at different times (d)
Decreases at different times.
Q4. The S.I. unit of mass is …………………
(a) gram (b)kilogram (c)milligram (d) decigram
Q5. I f the body travels same distance in same time , the motion is said to be ………..
(a)Uniform (b) Time Period (c) Non- Uniform (d)None of these
Q6. The movement of pendulum is ………………..motion
(a) Rectilinear (b) Oscillatory (c) Linear (d) None of these
Q7. Light is a form of ……………
(a) Power (b)Energy (c)Force (d)None of these
Q8. Splitting of white light into seven colours is called………..
(a)Reflection of light (b) Rectilinear propagation of light (c) Lateral Inversion (d)Dispersion
Q9. Which of the following appliances does not use an electromagnet?
(a)Washing machine (b) Refrigerator (c) Electric Heater (d)Electric Bell
Q10. The liquid metal used in a thermometer is …………..
(a) Mercury (b) Silver (c)Gold (d)
Answers
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1)
(B) Speed = Distance/Time
2)
Distance = Speed × Time
Total distance = Distance in first case + Distance in second case
= 80*15/60 + 60*15/60
= 20 + 15 = 35km => Option (C)
3) Time taken by a pendulum is
(B) Same at all times
4) SI unit of mass is
(B) kilogram or kg
5)If body travels equal distances in equal time intervals, the motion is said to be
(A) Uniform
6)
(B) Oscillatory
7) Light is a form of
(B) Energy
8) Splitting of light into 7 colours is called
(D) Dispersion
9)
(C) Electric heater
10) Liquid metal used in thermometer is
(A) Mercury
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1. b) speed =distance / time
2. c) 35km
3. b)same at all time
4. b) kilogram
5. a) uniform
6. b) oscillatory
7. b) energy
8. d) dispersion
9. a) washing machine
10. a) mercury
hope it will help you kindly mark the answer as brainlist.