### EAMCET Physics Model Paper

EAMCET Physics Model Test Paper

1. In Young’s double slit experiment

1) only interference occurs 2) only diffraction occurs

3) both interference and diffraction occurs 4) polarisation occurs

2.A transistor has a base current of 1mA and emitter current 100mA. The current transfer ratio will be

1) 0.9 2) 0.99 3) 1.1 4) 10.1

3. With due regard to significant figures, the value of (46.7 – 10.04) is

1) 36.7 2) 36.00 3) 36.66 4) 30.6

4. The least count of a stop watch is 1/5 sec. The time of 20 oscillations of a pendulum is

measured to be 25 sec. The maximum percentage error in this measurement is

1) 8% 2) 1% 3) 0.8% 4) 16%

5.A body of mass 2kg is placed on a horizontal surface having coefficient of kinetic friction 0.4 and coefficient of static friction 0.5. If a horizontal force of 2.5N is applied on the body, the frictional force acting on the body will be (g = 10 ms^{–2})

1. 8 N 2) 10 N 3) 20 N 4) 2.5 N

6.Two particles of masses in the ratio 1 : 2 are moving in circles of radii in the ratio 2 : 3 with

time periods in the ratio 3 : 4. The ratio of their centripetal forces is

1) 9 : 4 2) 1 : 4 3) 9 : 16 4) 16 : 27

7.Two satellites are revolving round the earth at different heights. The ratio of their orbital speeds is 2: 1. If one of them is at a height of 100km, the height of the other satellite is

1) 19600km 2) 24600km 3) 29600km 4) 14600km

8.The triatomic gas is heated isothermally. What percentage of the heat energy is used to increase the internal energy?

1. 0 % 2. 14 % 3. 60 % 4. 100 %

9.If the length of the wire of a sonometer is halved the value of resonant frequency will be

1) double 2) half 3) four times 4) eight times

10. An achromatic combination of lenses produce

1) Image in black and white

2) Coloured images

3) Image unaffected by variation of refractive index with wave length

4) highly enlarged images

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