Explanation

• Light travels from denser to rarer medium.
• Angle of incidence > Critical angle.

Explanation

In SHM, the total distance covered by a body in one complete oscillation is equal to 4 times the amplitude (A).

Let's break it down:

• The body moves from its equilibrium position to the extreme position (distance = A)
• Then, it moves to the other extreme position (distance = 2A)
• Finally, it returns to the equilibrium position (distance = A) and then to the initial extreme position is not needed as it completes the cycle at the equilibrium position coming from the second extreme, so from the second extreme to equilibrium is A, and from equilibrium to the first extreme is A, totaling 4A for the full cycle.

Explanation

Hooke’s law states that stress is directly proportional to strain within the elastic limit.

It defines the proportionality range between stress and strain.

Beyond this limit, permanent deformation occurs.

Explanation

SAW is to CARPENTER so Pen is to Writer. 

A saw is used by a carpenter for his work.

A saw is the carpenter's tool. 

In the same manner, the PEN is writer's tool.

Explanation

Given the pattern: Write the second number first, then the first number.

For 16 × 46:

• Second number: 46
• First number: 16

Applying the pattern: 46 | 16 = 4616

Explanation

Explanation

A butler is the one who serves in a restaurant/house.

The code says butler is called rogue, so rogue will serve.

Explanation

Explanation

A retina is a part of an eye; likewise a leg is a part of a chair.

Both pairs show the same part–whole relationship.

Explanation

Percentage and Fraction

Given: 12 1/2% to 1/8

Let's convert 12 1/2% to a fraction: 12.5% = 12.5/100 = 1/8

So, 12 1/2% is equal to 1/8.

Now, let's look at the options:

1. 6/10 is to 1/2: 6/10 = 3/5, which is not equal to 1/2.

2. Decade is to century: A decade is 10 years, and a century is 100 years. The ratio is 1:10, which is similar to 12 1/2% : 1/8 (both are equivalent).

3. 100% is to 1: 100% = 1, so this is equivalent.