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Question (1)

QN009129

A quantity increasing by a fixed amount at equal intervals represents:

(A) exponential decay
(B) quadratic growth
(C) linear growth
(D) random variation

Correct Answer: C

Explanation:

Linear growth means increase by a constant amount.

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Question (2)

QN009130

A quantity decreasing uniformly over time represents:

(A) linear decay
(B) quadratic growth
(C) exponential growth
(D) circular motion

Correct Answer: A

Explanation:

Linear decay means decrease by a constant amount.

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Question (3)

QN009131

A plant is 12 cm tall and grows 4 cm every week. What will be its height after 5 weeks?

(A) 28 cm
(B) 30 cm
(C) 32 cm
(D) 34 cm

Correct Answer: C

Explanation:

12+4×5=32

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Question (4)

QN009132

The expression representing the height of the plant after w weeks is:

(A) 12−4w
(B) 4w−12
(C) 12+4w
(D) 16w

Correct Answer: C

Explanation:

Initial height + weekly growth.

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Question (5)

QN009133

A water tank contains 500 L of water and loses 20 L every hour. How much water remains after 8 hours?

(A) 320 L
(B) 340 L
(C) 360 L
(D) 380 L

Correct Answer: B

Explanation:

500−20×8=340

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Question (6)

QN009134

Which expression represents the water remaining after h hours?

(A) 500+20h
(B) 20h−500
(C) 500−20h
(D) 520h

Correct Answer: C

Explanation:

Water decreases by 20 L every hour.

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Question (7)

QN009135

A salary increases by ₹1500 every year from an initial salary of ₹25,000. What will be the salary after 4 years?

(A) ₹29,000
(B) ₹30,000
(C) ₹31,000
(D) ₹32,000

Correct Answer: C

Explanation:

25000+1500×4=31000

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Question (8)

QN009136

Which situation represents linear decay?

(A) Population doubling every year
(B) Savings increasing monthly
(C) Fuel decreasing steadily during a trip
(D) Area of square increasing with side

Correct Answer: C

Explanation:

Constant decrease represents linear decay.

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Question (9)

QN009137

A mobile phone worth ₹20,000 depreciates by ₹2500 annually. What will be its value after 3 years?

(A) ₹10,500
(B) ₹11,500
(C) ₹12,500
(D) ₹13,500

Correct Answer: C

Explanation:

20000−2500×3=12500

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Question (10)

QN009138

The value of a machine after t years is given by V=50000−3000t. What is the value after 6 years?

(A) ₹30,000
(B) ₹31,000
(C) ₹32,000
(D) ₹33,000

Correct Answer: C

Explanation:

50000−3000(6)=32000

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Question (1)

A quantity increasing by a fixed amount at equal intervals represents:

Explanation:

Link:

Question (2)

A quantity decreasing uniformly over time represents:

Explanation:

Link:

Question (3)

A plant is 12 cm tall and grows 4 cm every week. What will be its height after 5 weeks?

Explanation:

Link:

Question (4)

The expression representing the height of the plant after w weeks is:

Explanation:

Link:

Question (5)

A water tank contains 500 L of water and loses 20 L every hour. How much water remains after 8 hours?

Explanation:

Link:

Question (6)

Which expression represents the water remaining after h hours?

Explanation:

Link:

Question (7)

A salary increases by ₹1500 every year from an initial salary of ₹25,000. What will be the salary after 4 years?

Explanation:

Link:

Question (8)

Which situation represents linear decay?

Explanation:

Link:

Question (9)

A mobile phone worth ₹20,000 depreciates by ₹2500 annually. What will be its value after 3 years?

Explanation:

Link:

Question (10)

The value of a machine after t years is given by V=50000−3000t. What is the value after 6 years?

Explanation:

Link:

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