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Ques 1 (i): A body is acted upon by two equal and opposite forces, that are NOT along the same straight line. The body will:
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(b) have only rotational motion |
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Ques 1 (ii): Which among the following is a vector quantity?
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(d) moment of couple |
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Ques 1 (iii): What is the correct energy transformation during burning of a candle?
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(c) chemical → heat + light |
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Ques 1 (iv): When a ray of light passes from one optical medium to another, which of the following physical quantities does NOT change?
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(b) Frequency of the wave |
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Ques 1 (v): Which one of the following combinations is the correct ascending order of electromagnetic waves in terms of wavelength?
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(a) gamma-rays, visible light, microwaves |
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Ques 1 (vi): For a lever, a graph is plotted with load on Y-axis and effort on X-axis. Which load of the following represents the slope of the graph?
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(a) Mechanical advantage |
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Ques 1 (vii): For a real image formed by a convex lens, the ratio of 1: 0 = 2 : 5, then the object is: (I is the height of the image and O is the height of the object)
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(d) between 2 and 2F |
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Ques 1 (viii): A ray of light is incident normally on a face of an equilateral prism. The ray gets totally reflected at the second refracting surface. The total deviation produced in the path of the ray is:
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(c) 90° |
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Ques 1 (ix): In a closed circuit containing a bulb and a cell, the electromotive force (e) and the terminal voltage (V) is related as.(Given I is current and r is internal resistance.)
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(b) v=e-tr |
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Ques 1 (x): A metal piece of mass 5 g has thermal capacity 2.5 JK''. If the mass of the metal is tripled, then its specific heat capacity will be:
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(d) 0.5 jg-1 K-1 |
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Ques 1 (xi): Assertion (A): As the level of water in a tall measuring cylinder kept under running tap rises, the pitch of sound gradually increases.
Reason (R): Frequency of sound is inversly proportional to the length of the water column.
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(c) A is true but (R) is false |
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Ques 1 (xii): In the given circuits Y and Z, the resistors, R, and R2, are connected in:
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(b) parallel in both the circuits |
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Ques 1 (xiii): A radioactive element P emits one a-particle and transforms to a new element Q. What will be the position of the element Q in the periodie table?
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(d) two groups to the left of P |
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Ques 1 (xiv): Each of the substances given below is supplied with same amount of heat. Which one will attain the highest temperature?
| Substance |
Lead |
Aluminium |
Copper |
Iron |
| Specific heat capacity |
0.031 |
0.21 |
0.095 |
0.115 |
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(d) lead |
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Ques 1 (xv): The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of the induced current will be:
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(b) anticlockwise when magnet is above and below the ring |
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Ques 2 (i) (a): In uniform circular motion the centrifugal force acts.....
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towards the centre |
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Ques 2 (i) (b): Refractive index of a medium is independent of........
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angle of incidence |
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Ques 2 (i) (c): Heat absorbed during change of phase depends on.....
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mass |
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Ques 2 (i) (d): Emf of a cell is------ the terminal voltage when the cell is in open circuit.
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equal to |
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Ques 2 (i) (e): In a step-up transformer the turns ratio is.......
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more than 1 |
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Ques 2 (i) (f): The nuclear radiation with lowest ionizing power is....
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ϒ |
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