This Video contains solution of the following MCQs.
1. Artificial gravity in spacecraft can be created by:
*translatory Motion *vibratory Motion *spin motion *orbital motion
2. Two perpendicular vectors having magnitudes of 4 units and 3 units are added. There resultant has magnitude of :
*5 units *7 units *12 units *25 units
3. The luminous intensity of light is measured in:
*decibel *candela *dioptre *watt/ m2
4. A 600 N man runs up a stair of 4m height, in 3 seconds. The power needed is:
*24W *350W *450W *800W
5. Intensity of sound is measured in :
* watt/ m2 *joule /m *watt/ sec *watt/ m
6. The dimensions of angular velocity are :
* ML0T-1 * ML0T-2 * M0L0T-1 * M0L0T-2
7. A body, moving along the circumference of a circle, completes two revolutions. If the radius of circle is R, the ratio of displacement to the covered path will be :
* zero * πR * 2 πR * 4πR
8. The focal length of magnifying glass is equal to the least distance of the distinct vision. Its angular magnification will be :
* 6 * 5 * 2 * 1
9. When Newton’s rings are observed by reflected light , the centre of rings appear dark due to :
*phase reversal only *path difference zero only
* intensity of light being maximum * both phase reversal and path difference being zero.
10. Then temperature of air rises, the speed of sound waves increase because:
*wavelength of wave increases *the frequency of wave increase
* both frequency and wavelength increases * neither frequency nor wavelength increase
11. The experimental evidence of transverse nature of light is:
*diffraction *interference * polarization * dispersion
12. A lens of linear magnification 3 is placed between as object and a fixed screen. If size of image is 6cm, the size of the object will be:
*0.5cm *2 cm * 3 cm * 18 cm
13. A bullet is fired horizontally with 20 m/s, the absence of air friction, its horizontal velocity component after 2 s will be:
*40m/s *20m/s * 10 m/s * 5 m/s
14. The angular momentum of particle moving in circle is conserved if:
*net torque acting on particle is zero
*the acceleration of particle is zero
* net angular displacement of particle is zero
* net force acting on particle is zero
15.If the velocity of a body is doubled and the mass is reduced to one fourth of its initial value, the kinetic energy will be:
*be doubled *four fold * remains same * becomes zero
16. An object is falling through a viscous fluid with terminal velocity. Its velocity:
*is decreasing *is increasing * remains same * becomes zero
17. A force of 8N is applied to the spanner perpendicularly at a distance of 0.15m from the centre of the nut, the moment of force acting on the nut is:
*1.2 Nm *1.5 Nm * 2.1 Nm * 3 Nm
1. Artificial gravity in spacecraft can be created by:
*translatory Motion *vibratory Motion *spin motion *orbital motion
2. Two perpendicular vectors having magnitudes of 4 units and 3 units are added. There resultant has magnitude of :
*5 units *7 units *12 units *25 units
3. The luminous intensity of light is measured in:
*decibel *candela *dioptre *watt/ m2
4. A 600 N man runs up a stair of 4m height, in 3 seconds. The power needed is:
*24W *350W *450W *800W
5. Intensity of sound is measured in :
* watt/ m2 *joule /m *watt/ sec *watt/ m
6. The dimensions of angular velocity are :
* ML0T-1 * ML0T-2 * M0L0T-1 * M0L0T-2
7. A body, moving along the circumference of a circle, completes two revolutions. If the radius of circle is R, the ratio of displacement to the covered path will be :
* zero * πR * 2 πR * 4πR
8. The focal length of magnifying glass is equal to the least distance of the distinct vision. Its angular magnification will be :
* 6 * 5 * 2 * 1
9. When Newton’s rings are observed by reflected light , the centre of rings appear dark due to :
*phase reversal only *path difference zero only
* intensity of light being maximum * both phase reversal and path difference being zero.
10. Then temperature of air rises, the speed of sound waves increase because:
*wavelength of wave increases *the frequency of wave increase
* both frequency and wavelength increases * neither frequency nor wavelength increase
11. The experimental evidence of transverse nature of light is:
*diffraction *interference * polarization * dispersion
12. A lens of linear magnification 3 is placed between as object and a fixed screen. If size of image is 6cm, the size of the object will be:
*0.5cm *2 cm * 3 cm * 18 cm
13. A bullet is fired horizontally with 20 m/s, the absence of air friction, its horizontal velocity component after 2 s will be:
*40m/s *20m/s * 10 m/s * 5 m/s
14. The angular momentum of particle moving in circle is conserved if:
*net torque acting on particle is zero
*the acceleration of particle is zero
* net angular displacement of particle is zero
* net force acting on particle is zero
15.If the velocity of a body is doubled and the mass is reduced to one fourth of its initial value, the kinetic energy will be:
*be doubled *four fold * remains same * becomes zero
16. An object is falling through a viscous fluid with terminal velocity. Its velocity:
*is decreasing *is increasing * remains same * becomes zero
17. A force of 8N is applied to the spanner perpendicularly at a distance of 0.15m from the centre of the nut, the moment of force acting on the nut is:
*1.2 Nm *1.5 Nm * 2.1 Nm * 3 Nm
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