Question

identify the relation between the first pair if words and complete the second pair?
a) time : second

temperature:

b)speedometer: speed

sundial:

c)velocity: m/s

acceleration:​

Answer 1

Answer:

1. A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly, then

2. A uniform disc is acted by two equal forces of magnitude F. One of them, acts tangentially to the disc, while other one is acting at the central point of the disc. The friction between disc surface and ground surface is . If r be the radius of the disc, then the value of n would be (in N)

3. While keeping area of cross-section of a solenoid same, the number of turns and length of solenoid one both doubled. The self inductance of the coil will be

4. Consider the circular loop having current and with central point O. The magnetic field at the central point O is

5. The Boolean expression , where P and Q are the inputs of the logic circuit, represents

6. Consider the diagram shown below.

A voltmeter of resistance . is connected across A and 5. The potential drop across and C measured by voltmeter is

7. Two spherical nuclei have mass numbers 2l6 and 64 with their radii and respectively The ratio, is equal to

8. A massless rod S having length 27 has equal point masses attached to its two ends as shown in figure. The rod is rotating about an axis passing through its centre and making angle with the axis. The magnitude of change of momentum of rod i.e. equals

9. A semiconductor having electron and hole mobilities and respectively if its intrinsic carrier density is then what will be the value of hole concentration P for which the conductivity will be minimum at a given temperature?

10. In terms of basic units of mass (M), length (L), time (T) and charge (Q), the dimensions of magnetic permeability of vacuum (Ho) would be

Explanation:

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Answer 2

The completed pairs are as follows -

• Given first pair - Time : Second
• Relationship between the two terms is - 2nd term is the SI unit of the 1st term.
• From the above-mentioned relationship, the completed second pair will be - Temperature : Kelvin
• Similar to the first pair, the Kelvin (2nd term) is the SI unit of temperature (1st term).

• Given first pair - Speedometer : Speed
• Relationship between the two terms is - 1st term is the measuring instrument for the 2nd term.
• From the above-mentioned relationship, the completed second pair will be - Sundial : Time
• Similar to the first pair, the Sundial (1st term) is the measuring instrument for time (2nd term).

• Given first pair - Velocity : m/s
• Relationship between the two terms is - 2nd term is the SI unit of the 1st term.
• From the above-mentioned relationship, the completed second pair will be - Acceleration : m/s²
• Similar to the first pair, the m/s² (2nd term) is the SI unit of acceleration (1st term).