A. Concave

C. Convex lens

D. Interferometer

A. a plane wave front

B. an elliptical wave front

D. a cylindrical wave front

A. law of gravitation

B. second law of motion

C. first law of motion

A. same current

B. different current and potential differences

C. same current and potential difference

B. Plank

C. Fresnel

D. Hertz

A. force

C. velocity

D. both force and acceleration

A. none

B. 10 N

C. 100 N

A. more for a round edge

B. less for a round edge

C. less for a sharp edge

B. always an antinode is formed

C. sometimes a node and sometimes an antinode is formed

D. neither node nor antinode is formed

A. reflection

C. diffraction

D. refraction

A. 0.510-6 Nm-2

B. 0.210-6Nm-2

D. 2108 Nm-2

A. ??3 i^ + ??3 j^ + ??3 k^

B. 1/??3 i^ + 1/??3 j^ +1/ ??3 k^

C. ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^

A. ML-T-1

B. MLT-2

C. ML-2T-1

B. A.B/B

C. A.cos?

D. Both a and b are correct

A. DC circuit

C. Both AC and DC circuit

D. Full wave rectifier circuit

A. X-axis

B. Y-axis

C. Z-axis

A. Can exist inside the nucleus

B. Cannot exist inside the nucleus

C. Can exist both inside and outside the nucleus

A. 3.60 x 1010 disintegration per sec

B. 3.74 x 109 disintegration per sec

C. 3.55 x 1010 disintegration per sec

A. (2i^ 2j^ +k^)/9

B. (2i^ 2j^ +k^)/5

D. 2i^ 2j^ + k^

A. any rate

C. at high rate

D. at variable rate

A. momentum increases 4 times and K.E increases 2 times

C. momentum increases 2 times and K.E increases constant

D. momentum and K.E. remain same

A. Isotones

C. Isotopes

D. Isomers

A. voltmeter

C. galvanometer

D. ammeter

B. First increases then decreases

C. Decreases

D. Remains same

A. Fission reaction

B. Fusion reaction

C. Chemical reaction

A. The average energy of the nucleus

C. The binding energy of the nucleus

D. All of above are one and the same thing

A. torque

C. work

D. impulse

A. smaller than the restoring couple

B. greater than the restoring couple

C. zero

A. Being a number it has no unit.

B. Jm-2

D. Nm-1

B. minimum

C. zero

D. infinity

A. four time

C. eight time

D. once

A. 0

B. i^

D. -1

A. |A| = |B|

C. AB^ = BA^

D. |A^| = |B^|

A. zero

B. none of these

D. positive

A. 143

C. 92

D. 235

A. man does more work than child

C. both do the same amount of work

D. it is a foolish question

A. D.C current at peak value

B. High voltage A.C

C. Low voltage A.C

A. All of above

C. Energy of decay

D. Destruction energy

A. Stiffness

B. Toughness

C. Extension

A. 38.2 J

B. 3.92 J

D. 392.1 J

B. Accelerating force increases on the wheel

C. Two forces act on the wheel

D. Two hands provide a firm grip

A. Crystallization

B. Subtraction

D. Fusion

A. Magnetometer

C. Magnetic resonance imaging (MRI)

D. Oscilloscope

A. The cross sectional area of the wire remains constant

B. The wire is not stretched beyond its elastic limit

C. The weight of the wire is negligible

B. in parallel with any of the series resistances in the circuit

C. in series with any of the parallel resistances in the circuit

D. in parallel with circuit

A. 2

B. -1

D. -2

A. Heat energy is released

B. Chemical energy is released

D. Light energy is released

A. ?-rays

B. ?-rays

C. X-rays

A. No definite charge

C. Plus 1.6 x 10-19C

D. Minus 1.6 x 10-19C

B. C/R

C. 1/ 2RC

D. R/C