Explanation

Cost Price (CP) = Rs. 800
Selling Price (SP) = Rs. 1,000

Gain = SP − CP

$$=1000-800=200$$

Gain % = (Gain ÷ CP) × 100

$$=$$200/800​×100

=25%

Last updated by NA on 09-0-2026

Explanation

The particle's path is a helix.

Reasoning:

• Velocity has two components:
  • Parallel to the fields → electric force accelerates it along the axis
  • Perpendicular to the fields → magnetic force makes it circle around the axis
• Combined → helical path (with changing pitch as it speeds up/slows down)

Explanation

• The time period of a charged particle in a uniform magnetic field:
• Formula:T=2πm/ qB
• • Here, m = mass, q = charge, and B = magnetic field strength.
• Notice the velocity v does not appear in this formula — the period depends only on mass, charge, and field strength.

Explanation

Explanation

Let's calculate using the capital × time method:

• A: 15,000 × 24 = 360,000
• B: 20,000 × 24 = 480,000
• C: 20,000 × 18 = 360,000

Profit ratio = 360,000: 480,000: 360,000

Simplify:
3 : 4 : 3

Total parts = 3 + 4 + 3 = 10

B's share = $frac{4}{10} times 25,000$

= Rs. 10,000

Explanation

LCM of 5, 7, 10, 12 = 420 seconds

1 hour = 3600 seconds

Number of complete intervals:
3600 ÷ 420 = 8.57

Since the first strike is excluded, the number of complete strikes is 8.

Explanation

Given:

• Profit = Rs. 120
• Profit = 20% of Selling Price (SP)

20% of SP=120
SP=120×100/20​=Rs.600

Now,

$$CP=SP-Profit$$

$$=600-120$$

$$=Rs.480$$

Explanation

The Induced Fit Model was proposed by Daniel Koshland in 1958.

• The enzyme active site is flexible, not rigid.
• Substrate binding induces a shape change in the enzyme.
• The perfect fit is achieved after binding, not before.

Explanation

Area of wall = Height × Length
= 8 × 24
= 192 ft²

Given: 10 gallons cover 75 ft²

Required paint

$$frac{192 times 10}{75} = 25.6$$

Explanation

• The underlined word quickly is an adverb because it describes how the action (the verb "finished") was done.
• Part of speech: Adverb (specifically, an adverb of manner)
• Target word: quickly
• Modified word: finished (verb)