NEET Physics Quiz
1. A block of mass m is pulled along a horizontal frictionless surface by a rope of mass m/2. If a force F is applied at the end of the rope, the force with which the rope pulls the block is:
A. FB. F/2
C. F/3
D. 2F/3
2. A body is projected vertically upwards. At its maximum height, its velocity is:
A. MaximumB. Half of its initial velocity
C. Zero
D. Equal to its initial velocity
3. The work done by a centripetal force on a body moving in a circular path is:
A. PositiveB. Negative
C. Zero
D. Depends on the velocity
4. A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length 40 cm. The focal length of the combination is:
A. 60 cmB. 40 cm
C. 20 cm
D. 80 cm
5. If a wire is stretched to double its length, its resistance becomes:
A. Two timesB. Half
C. Four times
D. One-fourth
6. Which of the following is not a unit of energy?
A. JouleB. Electron volt
C. Kilowatt
D. Calorie
7. A stone is thrown horizontally from the top of a tower. During its motion, which of the following remains constant?
A. Vertical velocityB. Horizontal velocity
C. Both A and B
D. None of the above
8. The escape velocity of a body from the surface of the Earth is approximately:
A. 9.8 m/sB. 11.2 km/s
C. 11.2 m/s
D. 1.6 km/s
9. According to Ohm's law, the relationship between voltage (V), current (I), and resistance (R) is:
A. V = I/RB. R = I/V
C. V = IR
D. I = VR
10. A plane mirror produces an image that is:
A. Real and invertedB. Virtual and inverted
C. Real and erect
D. Virtual and erect
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