10th Science Test one marks

10th Science Test one marks

10th Science One Mark Test

Quiz

  

 

1. Inertia of a body depends on
   1.   Weight of the object
   2.   acceleration due to gravity of the planet
   3.   mass of the object
   4.   both a & b
2. Impulse is equals to
   1.   Rate of change of momentum
   2.   rate of force and time
   3.   change of momentum
   4.   rate of change of mass
3. Newton’s III law is applicable
   1.   For a body is at rest
   2.   for a body in motion
   3.   both a & b
   4.   only for bodies with equal masses
4. Plotting a graph for momentum on the X-axis and time on Y-axis. Slope of momentum-time graph gives
   1.   Impulsive force
   2.   Acceleration
   3.   Force
   4.   Rate of force
5. In which of the following sport the turning of effect of force used
   1.   Swimming
   2.   Tennis
   3.   Cycling
   4.   Hockey
6. The unit of ‘g’ is m s-2. It can be also expressed as
   1.   cm s-1
   2.   N kg-1
   3.   N m2 kg-1
   4.   cm2 s2
7. One kilogram force equals to
   1.   9.8 dyne
   2.   9.8 x 104 N
   3.   98 x 104 dyne
   4.   980 dyne
8. The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the earth then its value will be ______ kg
   1.   4 M
   2.   2 M
   3.   M/4
   4.   M
9. If the earth shrinks to 50% of its real radius its mass remaining the same, the weights of a body on the earth will
   1.   Decrease by 50%
   2.   Increase by 50%
   3.   Decrease by 25%
   4.   Increase by 300%
10. To project the rockets which of the following principle(s) is / (are) required?
    1.   Newton’s third law of motion
    2.   Newton’s law of gravitation
    3.   Law of conservation of linear momentum
    4.   both a and c
11. The refractive index of four substances A, B, C and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
    1.   A
    2.   B
    3.   C
    4.   D
12. Where should an object is placed so that a real and inverted image of same size is obtained by a convex lens
    1.   f
    2.   2f
    3.   infinity
    4.   between f and 2f
13. A small bulb is placed at the principle focus of a convex lens. When the bulb is switched on, the lens will produce
    1.   a convergent beam of light
    2.   a divergent beam of light
    3.   a parallel beam of light
    4.   a coloured beam of light
14. Magnification of a convex lens is
    1.   Positive
    2.   Negative
    3.   Either Positive or Negative
    4.   Zero
15. A convex lens forms a real, diminished point sized image at focus. Then the position of the object is at
    1.   Focus
    2.   Infinity
    3.   at 2f
    4.   between f and 2f
16. Power of a lens is -4D, and then its focal length is
    1.   4m
    2.   -40m
    3.   -0.25m
    4.   -2.5m
17. In a myopic eye, the image of the object is formed
    1.   Behind the retina
    2.   on the retina
    3.   in front of the retina
    4.   on the blind spot
18. The eye defect ‘presbyopia’ can be corrected by
    1.   Convex Lens
    2.   Concave Lens
    3.   Convex Mirror
    4.   Bi Focal Lenses
19. Which of the following lens would you prefer to use while reading small letters found in a dictionary?
    1.   A convex lens of focal length 5 cm
    2.   A concave lens of focal length 5 cm
    3.   A convex lens of focal length 10 cm
    4.   A concave lens of focal length 10 cm
20. If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?
    1.   VB = VG = VR
    2.   VB> VG> VR>
    3.   VB <VG <VR
    4.   VB< VG> VR
21. Which of the following is correct?
    1.   Rate of change of charge is electrical power
    2.   Rate of change of charge is current
    3.   Rate of change of energy is current
    4.   Rate of change of current is charge
22. SI unit of resistance is
    1.   mho
    2.   joule
    3.   ohm
    4.   ohm meter
23. In a simple circuit, why does the bulb glow when you close the switch?
    1.   The switch produces electricity
    2.   Closing the switch completes the circuit.
    3.   Closing the switch breaks the circuit.
    4.   The bulb is getting charged
24. Kilowatt hour is the unit of
    1.   Resistivity
    2.   Conductivity
    3.   Electrical Energy
    4.   Electrical Power
25. When a sound wave travels through air, the air particles
    1.   Vibrate along the direction of the wave motion
    2.   Vibrate but not in any fixed direction
    3.   Vibrate perpendicular to the direction of the wave motion
    4.   Do not vibrate
26. Velocity of sound in a gaseous medium is 330 m s-1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is
    1.   330 m s-1
    2.   660 m s-1
    3.   156 m s-1
    4.   990 m s-1
27. The frequency, which is audible to the human ear is
    1.   50 kHz
    2.   20 kHz
    3.   1500 kHz
    4.   10000 kHz
28. The velocity of sound in air at a particular temperature is 330 m s-1. What will be its value when temperature is doubled and the pressure is halved?
    1.   330 m s-1
    2.   165 m s-1
    3.   330 x √2 m s-1
    4.   320 / √2 m s-1
29. If a sound wave travels with a frequency of 1.25 x 104 Hz at 344 m s-1, the wavelength will be
    1.   27.52 m
    2.   275.2 m
    3.   0.02752 m
    4.   2.752 m
30. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
    1.   Speed
    2.   Frequency
    3.   Wavelength
    4.   None of these