Question

1)A spring balance is used for measuring(a) mass (b) weight(c) pressure (d) speed

2)Which of the following is not a smooth surface?(a) Surface of wet soap (b) Surface of tyres(c) Glazed tiles (d) Surface of mirror

3) A pendulum oscillates 20 times in 4 seconds. Find its time period. (a) 0.05 sec (b) 0.001 sec. (c) 0.2 sec (d) 0.1 sec

4) If you hold a pen in your right hand and stand in front of the mirror, the pen will be in the left hand in the image. This phenomenon is called (a) lateral inversion (b) diffraction (c) reflection (d) inversion ​

Answer 1

Answer:

1).(b).weight , answer for your 1 st question