1. 2. 3. A small toy starts moving from the position of rest under a constant acceleration. If it travels a distance of 10m in ts, the distance travelled by the toy in the next t s will be: (a) 10 m (b) 20 m (c) 30 m (d) 40 m At what temperature a gold ring of diameter 6.230cm be heated so that it can be fitted on a wooden bangle of diameter. 6.241cm? Both the diameters have been measured at room temperature (27C). (Given: coefficient of linear thermal expansion of gold = 1.4 10-5 K-) (a) 125.7C (b) 91.7C (c) 425.7C (d)152.7C Two point charge Q each are placed at a distance d apart. A third point charge q is placed at a distance x from mid-point on the perpendicular bisector. The value of x at which charge q will experience the maximum Coulomb's force is: 4. 5. (a) x = d (b) x= d 2 d (c) d (d) x=- 22 The speed of light in media 'A' and 'B' are 2.0 10 10 cm/s and 1.5 100 cm/s respectively. A ray of light enters from the medium B to an incident angle '0'. If the ray suffers total internal reflection, then (a) = sin 3 4 2 (b) 0>sin (c) sin 4 Fikstar SHO In the following unclear reaction, D D D > D3 D4 Mass number of D is 182 and atomic number is 74. Mass number and atomic number of D4 respectively will be (a) 174 and 71 (b) 174 and 69 (c) 172 and 69 (d) 172 and 71