401. Relative to the sum of the masses of its constituent nucleons, the mass of a nucleus is?
(A) Greater
B) Smaller
(C) Same
(D) Sometimes smaller and sometimes greater
402. The numerical ratio of displacement to distance is:
A. Equal to one
B. Less than one
C. Greater than one
D. Anything less or equal to one
403. A stone dropped from the top of the tower reaches the ground in 2 sec. If ‘g’ is 10 m/s², then the length of the tower is:
A. 10 M
B. 20 M
C. 30 M
D. 40 M
404. A projectile will cover the same horizontal distance when the initial angles of projection are:
A. 30 Degree and 40 Degree
B. 30 Degree and 45 Degree
C. 60 Degree and 30 Degree
D. 45 Degree and 60 Degree
405. Projectile is thrown in such a way that its maximum height is equal to its maximum range. The angle of projection is:
A. 76 Degree
B. 74 Degree
C. 72 Degree
D. 78 Degree
406. A young boy is seated in a train with his back to the engine and tosses a coin, which falls behind him as the train moves:
A. Forward and uniform speed
B. Backward and uniform speed
C. Forward with acceleration
D. Forward and deceleration
407. A body of mass 40 grams is moving with a velocity of 2 cm/sec on a horizontal frictionless table, the force on the body is:
A. 39,200 Dyne
B. 160 Dyne
C. 80 Dyne
D. Zero
408. A stone of mass is 10 kg is falling freely. Its weight is:
A. Zero
B. 98 N
C. Less than 98 N
D. Greater than 98 N
409. A body of Mass 2 kg moves with an acceleration of 20 m/sec, the rate of change of momentum is:
A. 40 kg m/sec²
B. 10 kg m/sec²
C. 20 kg m/sec²
D. 11 kg m/sec²
410. When a projectile is at the highest point, the direction of its velocity and acceleration is:
A. Parallel to each other
B. Anti-parallel to each other
C. Perpendicular to each other
D. Inclined at an angle of 45 Degree
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