Generate Quiz 69C70161ABBAF

1 / 10

A half-life of sodium-24 is _______ which is used to estimate the volume of blood in a patient:

Elimination Tool

A) 6 hours

B) 15 hours

C) 8 hours

D) 15 days

2 / 10

A particle carrying a charge 3e accelerates through a potential difference of 2V. The energy acquired by it is ____.

Elimination Tool

A) 1.6 x 10-19J

B) 9.6 x 10-19J

C) 9.6 x 10-18J

D) 1.6 x 10-18J

3 / 10

The dimension of angular momentum is:

NUMS 2014
Physics
Measurements
Dimensions of Physical Quantities
Elimination Tool:

A) M.L1 T-1

B) M1 L2 T-13

C) M.L2.T-1

D) M2L1T

4 / 10

A plausible reason for the increase in resistivity of most of the conductors with temperature is:

Elimination Tool

A) The mass of the electron changes with temperature.

B) The charge on each electron changes with temperature.

C) The electron density changes with temperature.

D) The time between collisions changes with temperature.

5 / 10

Two glass prisms Pl and P2 are to be combined together to produce dispersion without deviation. The angle of the prisms P1 and P2 are selected as 40 and 30 respectively. If the refractive index of prism Pl is 1.54, then that of P2 will be:

Elimination Tool

A) 1.48

B) 1.58

C) 1.62

D) 1.72

6 / 10

A charged particle is moving on a circular path with velocity v in a uniform magnetic field B. If the velocity of the charged particle is doubled and the strength of the magnetic field is halved, then the radius becomes ______.

Elimination Tool

A) 8 times

B) 2 times

C) 4 times

D) 16 times

7 / 10

A 250V bulb passes a current of 0.3A. Calculate the power in the lamp.

Elimination Tool

A) 50 W

B) 75 W

C) 100 W

D) 90 W

8 / 10

A sound wave travels with a speed of 330ms−1 in air. If the wavelength of the wave is 3.3m, then the frequency of the wave is ______.

Elimination Tool

A) 50 Hz

B) 100 Hz

C) 150 Hz

D) 200 Hz

9 / 10

A wave passes through a medium, and each particle of the medium performs 100 complete vibrations in 5 seconds. What is the frequency of the wave?

Elimination Tool

A) 2 Hz

B) 20 Hz

C) 4 Hz

D) 40 Hz

10 / 10

The unstable atom means?

Elimination Tool

A) Electrons are increasing

B) Protons are increasing

C) Neutrons are increasing

D) Any of these

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